論文 - 藪内 直明
件数 110 件-
Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications
Campéon, BDL; Ishikawa, T; Tomohiro, K; Yabuuchi, N
JOURNAL OF MATERIALS CHEMISTRY A 13 ( 3 ) 2187 - 2197 2025年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Pathways to Improve Electrode Performance of P’2 Na2/3MnO2 for Sodium Batteries
Ugata Yosuke, Kuriyama Tomohiro, Yabuuchi Naoaki
Chemical Communications Early Access 2025年
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 共著
A Mn-based sodium-containing layered oxide, P'2-type Na2/3MnO2, is revisited as a positive electrode material for sodium-ion batteries, and factors affecting its electrochemical performances are examined. The cyclability of Na2/3MnO2 is remarkably improved by increasing the lower cut-off voltage during cycling even though the reversible capacity is sacrificed. Furthermore, the use of highly concentrated electrolytes, in which the presence of free solvent molecules is eliminated, effectively suppresses the dissolution of Mn ions, thus enabling stable cycling with >85% capacity retention for continuous 300 cycles.
-
MXene Electrodes for All Strain-Free Solid-State Batteries
Kawai, K; Lee, H; Nomura, Y; Fujita, M; Kitaura, H; Hosono, E; Nakajima, H; Tsukasaki, H; Mori, S; … 全著者表示
Kawai, K; Lee, H; Nomura, Y; Fujita, M; Kitaura, H; Hosono, E; Nakajima, H; Tsukasaki, H; Mori, S; Sakuda, A; Hayashi, A; Yabuuchi, N; Lee, YM; Okubo, M 閉じる
ACS APPLIED MATERIALS & INTERFACES 16 ( 42 ) 57377 - 57385 2024年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
A Practical and Sustainable Ni/Co-Free High-Energy Electrode Material: Nanostructured LiMnO2
Miyaoka Yuka, Sato Takahito, Oguro Yuna, Kondo Sayaka, Nakano Koki, Nakayama Masanobu, Ugata Yosuke … 全著者表示
Miyaoka Yuka, Sato Takahito, Oguro Yuna, Kondo Sayaka, Nakano Koki, Nakayama Masanobu, Ugata Yosuke, Goonetilleke Damian, Sharma Neeraj, Glushenkov M. Alexey, Hiroi Satoshi, Ohara Koji, Takada Koji, Fujii Yasuhiro, Yabuuchi Naoaki 閉じる
ACS Central Science 10 ( 9 ) 1718 - 1732 2024年9月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society (ACS) 共著
Ni/Co-free high-energy positive electrode materials are of great importance to ensure the sustainability of Li-ion battery production and its supply chain in addition to minimizing environmental impact. Here, nanostructured LiMnO2 with both orthorhombic/monoclinic layered domains is synthesized, and its lithium storage properties and mechanism are examined. High-energy mechanical milling is used to convert the metastable and nanosized LiMnO2 adopting the cation-disordered rocksalt structure to an optimal domain-segregated layered LiMnO2. This positive electrode produces an energy density of 820 W h kg–1, achieved by harnessing a large reversible capacity with relatively small voltage hysteresis on electrochemical cycles. Moreover, voltage decay for cycling, as observed for Li-excess Mn-based electrode materials, is effectively mitigated. Furthermore, by determining the structure–property relationships of different LiMnO2 polymorphs, LiMnO2 with similar domain structure and surface area is successfully synthesized with an alternative and simpler method, without the metastable precursor and high-energy mechanical milling. The cyclability of domain-containing LiMnO2 is also improved with the use of a highly concentrated electrolyte coupled with a lithium phosphate coating due to the suppression of Mn dissolution. These findings maximize the possibility of the development of high-energy, low-cost, and practical rechargeable batteries made from sustainable and abundant Mn sources without Ni/Co.
-
Yin Jiaxuan, Zhang Yanjia, Kuriyama Tomohiro, Jin Yongcheng, Yabuuchi Naoaki
Chemistry of Materials 36 ( 18 ) 8682 - 8691 2024年9月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society 共著
Lithium-ion batteries are now successfully developed with higher energy densities than classical aqueous-based battery technologies and are used as power sources for electric vehicles and other electric storage applications. Sodium-ion batteries are another emerging battery technology, but their energy density is not high compared to that of their Li counterparts. Anionic redox reactions have attracted attention due to their potential to enhance the reversible capacity and operating voltage of positive electrode materials in Na/Li batteries. To understand the influence of Al substitution on the activation mechanism of anionic redox reactions in Na-/Li-containing Mn-based layered oxides, the P2-type Al-substituted Na2/3Al0.1Mn0.9O2 is designed to explore the difference in the anionic redox behavior. LiyAl0.1Mn0.9O2 is also prepared by electrochemical ion exchange, and the anionic redox behavior was compared for both samples. The Al-substituted Na2/3Al0.1Mn0.9O2 provides better cycling performance with partial activation of anionic redox, which is not observed for P′2-type Na2/3MnO2. Good reversibility for Na2/3Al0.1Mn0.9O2 and LiyAl0.1Mn0.9O2 with anionic redox is achieved, and this improvement originates from the nonexcessive use of anionic redox in electrode materials. This finding opens the possibility to develop high-energy sodium/lithium insertion materials with reversible anionic redox.
-
Zhang Yanjia, Ugata Yosuke, Campeon BenoitDenis Louis, Yabuuchi Naoaki
Advanced Energy Materials 14 ( 23 ) 2024年6月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Wiley-VCH Verlag GmbH 共著
Li-excess cation-disordered rocksalt oxides can boost the energy density of rechargeable batteries by using anionic redox, but the inferior reversibility of anionic redox hinders its use for practical applications. Herein, a binary system of Li3NbO4-LiMnO2 is targeted and the systematic study on factors affecting electrode reversibility, i.e., percolation probability, electronic conductivity, defect concentrations, and electrolyte solutions, is conducted. A Mn-rich sample, Li1.1Nb0.1Mn0.8O2, delivers a smaller reversible capacity compared with a Li-rich sample, Li1.3Nb0.3Mn0.4O2, because of the limitation of ionic migration associated with insufficient percolation probability for disordered oxides. Nevertheless, a larger reversible capacity of Li1.3Nb0.3Mn0.4O2 originates from excessive activation of anionic redox, leading to the degradation of electrode reversibility. The superior performance of Li1.1Nb0.1Mn0.8O2, including Li ion migration kinetics and electronic transport properties, is unlocked by the enrichment of structural defects for nanosized oxides. Moreover, electrode reversibility is further improved by using a highly concentrated electrolyte solution with LiN(SO2F)(2) through the surface stabilization on high-voltage exposure. Superior capacity retention, >100 cycles, is achieved for nanosized Li1.1Nb0.1Mn0.8O2. The electrolyte decomposition and surface stabilization mechanisms are also carefully examined, and it is revealed that the use of highly concentrated electrolyte solution can effectively prevent lattice oxygen being further oxidized and transition metal ion dissolution.
-
State-of-the-art solid-state electrochemistry in Japan
Yabuuchi, N
JOURNAL OF SOLID STATE ELECTROCHEMISTRY 28 ( 12 ) 4353 - 4353 2024年6月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
A methodology to synthesize easily oxidized materials containing Li ions in an inert atmosphere
Konuma Itsuki, Ugata Yosuke, Yabuuchi Naoaki
Energy Advances 3 ( 5 ) 962 - 967 2024年5月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 共著
A series of lithium-containing oxides with V3+ and Mn3+ ions are proposed as emerging high-capacity positive electrode materials for lithium-ion batteries. These oxides are typically synthesized by a calcination process in an inert atmosphere. For the successful synthesis of these materials, the strict control of oxygen partial pressure is necessary to prevent partial oxidation of materials during calcination. In this article, a simple methodology used in laboratory-scale material production, i.e., an oxygen trap by Cu foil, is described to synthesize phase pure oxides, which are easily oxidized on calcination. To demonstrate the benefit of the methodology, Li8/7Ti2/7V4/7O2 and Li8/7Ti2/7Mn4/7O2 are selected as lithium-containing oxides with V3+ and Mn3+ ions, respectively. Single phase oxides are successfully obtained from the pellets calcined with Cu foil, whereas partially oxidized phases are obtained for the pellets calcined without Cu foil. Moreover, phase-pure oxides synthesized with Cu foil show much better performance as positive electrode materials for battery applications. This methodology is also expected to be applied for material synthesis for diverse applications. A simple methodology to synthesize easily oxidized materials with Mn3+ and V3+ ions, which are used as emerging high-capacity positive electrode materials for lithium-ion batteries, is proposed.
-
Zhang, YJ; Ugata, Y; Campéon, BL; Yabuuchi, N
ADVANCED ENERGY MATERIALS 14 ( 23 ) 2024年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Ugata Yosuke, Motoki Chihaya, Dokko Kaoru, Yabuuchi Naoaki
Journal of Solid State Electrochemistry 28 ( 3-4 ) 1387 - 1401 2024年3月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Springer 共著
Li-ion batteries have gained intensive attention as a key technology for realizing a sustainable society without dependence on fossil fuels. To further increase the versatility of Li-ion batteries, considerable research efforts have been devoted to developing a new class of Li insertion materials, which can reversibly store Li-ions in host structures and are used for positive/negative electrode materials of Li-ion batteries. Appropriate evaluations of electrochemical properties of Li insertion materials are essential for the research of electrode materials in laboratory. In this article, we describe fundamental methods of electrochemical characterization of Li insertion materials including electrode preparation, cell assembly, and electrochemical measurement in the laboratory-scale research. The importance of selection for battery components such as electrolyte solutions, polymer binders, separators, and current collectors on the electrochemical properties of Li insertion materials, is also discussed. This article offers basic knowledge and techniques for electrochemical characterizations of Li insertion materials to students and beginners for battery research.
-
Unified understanding and mitigation of detrimental phase transition in cobalt-free LiNiO2
Konuma Itsuki, Ikeda Naohiro, Campeon Benoit D. L., Fujimura Hinata, Kikkawa Jun, Luong Huu Duc, Ta … 全著者表示
Konuma Itsuki, Ikeda Naohiro, Campeon Benoit D. L., Fujimura Hinata, Kikkawa Jun, Luong Huu Duc, Tateyama Yoshitaka, Ugata Yosuke, Yonemura Masao, Ishigaki Toru, Aida Taira, Yabuuchi Naoaki 閉じる
Energy Storage Materials 66 103200 2024年2月
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Elsevier 共著
Ni-enriched layered materials are used as electrode materials of Li -ion batteries for electric vehicle applications. Stoichiometric LiNiO2 with cationic Ni3+/Ni4+ redox is the ideal electrode material, but the gradual loss of capacity at the high voltage region, associated with Ni ion migration, hinders its use for practical applications. Therefore, to improve electrode reversibility of LiNiO2, less abundant Co ions and/or other electrochemically inactive ions, e.g., Al3+ ions, are in part substituted for Ni ions. Nevertheless, a unified understanding of improvement by metal substitution is as yet not established. In this study, the origin causing detrimental phase transition in LiNiO2 is discussed through the detailed analysis on LiNiO2 integrated with nanosized Li3PO4 derived from a metastable and rocksalt LiNiO2-Li3PO4 solid solution sample. LiNiO2 derived from the metastable rocksalt oxide has approximately 6 % anti -site defects, and the particle size growth is suppressed by uniformly dispersed nanosized Li3PO4. In low crystallinity LiNiO2 with partial structural disordering, the Ni ion migration to tetrahedral sites is effectively suppressed because of repulsive electrostatic interaction from Ni ions in Li layers. Moreover, from these findings, non-stoichiometric Li0.975Ni1.025O2 with smaller particle size has been directly synthesized without high-energy milling and Li3PO4 integration, and significant improvement of electrode reversibility is achieved. Electrode reversibility of non-stoichiometric Li0.975Ni1.025O2 is further improved through surface stabilization in a highly concentrated electrolyte solution. The unified understanding of deterioration mechanisms for LiNiO2 offers a new criterion to design Co -free LiNiO2 without metal substitution, leading to full utilization of a reversible capacity for layered materials.
-
Campeon Benoit D. L., Rajendra Hongahally B., Yabuuchi Naoaki
ChemSusChem 17 ( 3 ) 2024年2月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Wiley-VCH Verlag GmbH 共著
All-solid-state-batteries (ASSBs) necessitate the preparation of a solid electrolyte and an electrode couple with individually dense and compact structures with superior interfacial contact to minimize overall cell resistance. A conventional preparation method of solid polymer electrolyte (SPE) with polyethylene-oxide (PEO) generally consists in employing uni-axial hot press (HP) to densify SPE. However, while uni-axial press with moderate pressure effectively densifies PEO with Li salts, excessive pressure also unavoidably results in perpendicular elongation and deformation for polymer matrix. In this research, to overcome this limitation for the uni-axial press technique, a cold isostatic press (CIP) is applied to the fabrication of ASSB with PEO and LiFePO4. CIP effectively and uniformly applies pressure as high as 500 MPa without deformation. Characterizations confirm that CIP treated SPE has enhanced mechanical puncture strength, increasing from 499.3 +/- 22.6 to 539.3 +/- 22.6 g, and ionic conductivity, increasing from 1.04x10-4 to 1.91x10-4 S cm-1 at 50 degrees C. ASSB treated by CIP demonstrates remarkably enhanced rate capability and cyclability compared with the cell processed by HP, which is further evidenced by improvement of the apparent Li ion diffusion constant based on Sand equation analysis. The improvement enabled by CIP treatment originates from the superior interface uniformity between electrodes and SPE and from the densification of the LiFePO4 and SPE composite electrode. The effect of cold isostatic press (CIP) on solid polymer electrolyte (SPEs)-based all-solid-state batteries (ASSBs) is reported in this work. CIP treatment improves SPE's mechanical strength and ionic conductivity. The resulting ASSBs demonstrates enhanced rate capability, cyclability, and Li ion diffusion, attributed to interface uniformity and electrode densification achieved through CIP treatment.+image
-
Campéon, BDL; Umezawa, R; Pandey, AK; Ishikawa, T; Tsuchiya, Y; Ishigaki, Y; Kanto, R; Yabuuchi, N
ACS APPLIED MATERIALS & INTERFACES 16 ( 3 ) 3396 - 3405 2024年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
藪内 直明
関西電気化学テキストシリーズ 2023.2 ( 0 ) 02009 - 02009 2023年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：公益社団法人 電気化学会関西支部 単著
<p>電気自動車用リチウムイオン蓄電池の正極材料としてニッケルリッチの材料が利用されているが，リチウムイオン電池のさらなるエネルギー密度の向上には正極材料の進化が不可欠である．本発表では，高性能ニッケル系層状材料，高エネルギー密度・低コストマンガン系材料，全固体電池用のバナジウム系材料などの研究成果について，これら材料の電池特性に加え，材料合成手法や充放電反応機構について紹介し，電池特性劣化機構の詳細解析とその抑制の実現可能性について議論を行う．</p>
-
New functionality of electrode materials with highly concentrated electrolytes
Yosuke Ugata, Naoaki Yabuuchi
Trends in Chemistry 5 ( 9 ) 672 - 683 2023年9月 [査読有り]
DOI Web of Science CiNii Research
担当区分：最終著者, 責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Cell Press 共著
The use of Li-excess metal oxides as positive electrodes coupled with metallic Li-negative electrodes is regarded as a promising route toward achieving higher energy density for Li-ion batteries. However, the reversibility and cycle life of these electrode materials in conventional carbonate-based electrolyte solutions containing lithium salts at about 1 mol dm-3 often are still not an acceptable level for practical applications. Recently, as an important trend for electrolyte design, highly concentrated electrolytes (HCEs) have received much attention owing to new and emerging functionality through their superior compatibility with these advanced electrode materials. These new functionalities of electrode materials coupled with the use of HCEs and their mechanistic insights are reviewed.
-
Kanno Asuka, Ugata Yosuke, Ikeuchi Issei, Hibino Mitsuhiro, Nakura Kensuke, Miyaoka Yuka, Kawamura … 全著者表示
Kanno Asuka, Ugata Yosuke, Ikeuchi Issei, Hibino Mitsuhiro, Nakura Kensuke, Miyaoka Yuka, Kawamura Izuru, Shibata Daisuke, Ohta Toshiaki, Yabuuchi Naoaki 閉じる
ACS Energy Letters 8 ( 6 ) 2753 - 2761 2023年6月
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society 共著
Li-excess manganese-basedoxides have been proposed ashigh-capacitypositive electrode materials, but voltage decay associated with gradualoxygen loss hinders its use for practical applications. Herein, Li-excessmanganese oxides with different fluorine contents are synthesizedby high-energy mechanical milling. Although Li2MnOF2 with only divalent manganese ions cannot be synthesized,Li2MnO2F and Li2MnO1.5F1.5 are successfully synthesized. When the samples arecharged to 5.0 V, both oxyfluorides deliver large reversible capacities,similar to 350 mA h g(-1) and similar to 1000 mWh g(-1). However, insufficient capacity retention is alsoobserved because of the instability of anionic redox. In contrast,better capacity retention and higher energy density (730 mWh g(-1)) are obtained for Li2MnO1.5F1.5 with a 4.4 V cutoff because of the enrichment offluoride ions and activation of Mn2+/Mn4+ cationicredox. Moreover, electrode durability is significantly improved byusing a highly concentrated electrolyte, and good capacity retentionwithout voltage decay is achieved for >180 cycles.
-
Anion-Induced Interfacial Liquid Layers on LiCoO2 in Salt-in-Water Lithium-Ion Batteries
Oh Hyunjeong, Shin Seung-Jae, Choi Eunjin, Yamagishi Hirona, Ohta Toshiaki, Yabuuchi Naoaki, Jung H … 全著者表示
Oh Hyunjeong, Shin Seung-Jae, Choi Eunjin, Yamagishi Hirona, Ohta Toshiaki, Yabuuchi Naoaki, Jung Hun-Gi, Kim Hyungjun, Byon Hye Ryung 閉じる
JACS Au 3 ( 5 ) 1392 - 1402 2023年5月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society 共著
The incompatibility of lithium intercalation electrodes with water has impeded the development of aqueous Li-ion batteries. The key challenge is protons which are generated by water dissociation and deform the electrode structures through intercalation. Distinct from previous approaches utilizing large amounts of electrolyte salts or artificial solid-protective films, we developed liquid-phase protective layers on LiCoO2 (LCO) using a moderate concentration of 0.5 similar to 3 mol kg-1 lithium sulfate. Sulfate ion strengthened the hydrogen-bond network and easily formed ion pairs with Li+, showing strong kosmotropic and hard base characteristics. Our quantum mechanics/molecular mechanics (QM/MM) simulations revealed that sulfate ion paired with Li+ helped stabilize the LCO surface and reduced the density of free water in the interface region below the point of zero charge (PZC) potential. In addition, in situ electrochemical surface-enhanced infrared absorption spectroscopy (SEIRAS) proved the appearance of inner-sphere sulfate complexes above the PZC potential, serving as the protective layers of LCO. The role of anions in stabilizing LCO was correlated with kosmotropic strength (sulfate > nitrate > perchlorate > bistriflimide (TFSI-)) and explained better galvanostatic cyclability in LCO cells.
-
Nonflammable Fluorinated Ester-Based Electrolytes for Safe and High-Energy Batteries with LiCoO2
Ugata Yosuke, Yukishita Kazuki, Kazahaya Natsuho, Takahashi Shingo, Yabuuchi Naoaki
Chemistry of Materials 35 ( 9 ) 3686 - 3693 2023年5月
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society 共著
To further improve the energy density and safety of Li-ion batteries (LIBs), multifunctional electrolyte solvents are needed to replace conventional carbonate solvents. In this study, a nonflammable fluorinated ester, methyl 3,3,3-trifluoropropionate (MTFP), is evaluated as an electrolyte solvent for high-voltage Li batteries with the LiCoO2 positive electrode. A Li/LiCoO2 cell with an MTFP-based electrolyte exhibits superior capacity retention compared with a cell with a conventional carbonate-based electrolyte with a cutoff voltage of 4.5 V. Moreover, the LiCoO2 composite electrode with sodium carboxymethyl cellulose and styrene-butadiene rubber as binders, instead of the commonly used poly(vinylidene fluoride), can be cycled in the MTFP-based electrolyte without capacity loss or increase in polarization under high-voltage operation. The low-temperature performance and thermal stability of the LiCoO2 electrode are also improved by using the MTFP-based electrolyte. The analysis by X-ray photoelectron spectroscopy of the LiCoO2 electrode cycled in the MTFP-based electrolyte suggests that a thin and uniform passivation layer is formed on the electrode surface, resulting in excellent cyclability and thermal stability for LiCoO2. The insights related to nonflammable electrolytes contribute to the development of high-energy LIBs without sacrificing safety.
-
Anion-Induced Interfacial Liquid Layers on LiCoO2 in Salt-in-Water Lithium-Ion Batteries
Oh Hyunjeong, Shin Seung-Jae, Choi Eunjin, Yamagishi Hirona, Ohta Toshiaki, Yabuuchi Naoaki, Jung H … 全著者表示
Oh Hyunjeong, Shin Seung-Jae, Choi Eunjin, Yamagishi Hirona, Ohta Toshiaki, Yabuuchi Naoaki, Jung Hun-Gi, Kim Hyungjun, Byon Hye Ryung 閉じる
JACS AU 3 ( 5 ) 1392 - 1402 2023年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Ugata Yosuke, Motoki Chihaya, Nishikawa Satoshi, Yabuuchi Naoaki
Energy Advances 2 ( 4 ) 503 - 507 2023年4月
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 共著
Highly concentrated electrolytes (HCEs) have attracted great interest as electrolyte candidates for Li metal batteries because of their functionalities in improving the reversibility and cycling performance of the Li metal negative electrode. However, the poor wettability of conventional polyolefin separators toward HCEs with high viscosity remains a critical issue to be addressed. Although porous glass fiber filters are often used as separators for HCEs, Li dendrites easily penetrate the separator during repeated Li deposition/stripping under practical conditions, leading to an internal short circuit. Here, we report that the use of a meta-aramid-coated polyolefin separator improves the wettability with HCEs owing to its polar surface functional groups and enables stable and dendrite-free Li deposition/stripping with high coulombic efficiency of similar to 98% at practical areal capacity (2 mA h cm-2) for 100 cycles. A combined strategy utilizing HCEs and functional separators provides a promising possibility for the development of practical Li metal batteries. Highly concentrated electrolytes (HCEs) have attracted great interest as electrolyte candidates for Li metal batteries because of their functionalities in improving the reversibility and cycling performance of the Li metal negative electrode.
-
Improved Electrode Reversibility of Nanosized Li1.15Nb0.15Mn0.7O2 through Li3PO4 Integration
ZHANG Yanjia, CAMPÉON Benoît D. L., YABUUCHI Naoaki
Electrochemistry 91 ( 3 ) 037004 2023年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：公益社団法人 電気化学会 共著
<p>A lithium-excess cation-disordered rocksalt oxide, Li<sub>1.15</sub>Nb<sub>0.15</sub>Mn<sub>0.7</sub>O<sub>2</sub>, is synthesized and tested as positive electrode materials for battery applications. Although nanosized Li<sub>1.15</sub>Nb<sub>0.15</sub>Mn<sub>0.7</sub>O<sub>2</sub> delivers a large reversible capacity using cationic/anionic redox reaction, the inferior capacity retention hinders its use for practical applications. Such degradation of electrode reversibility, including electrochemical and structural reversibility, is anticipated to originate from the gradual oxygen loss for the electrode materials with anionic redox. Herein, Li<sub>3</sub>PO<sub>4</sub> is integrated into Li<sub>1.15</sub>Nb<sub>0.15</sub>Mn<sub>0.7</sub>O<sub>2</sub> by high-energy mechanical milling, and 7 mol% Li<sub>3</sub>PO<sub>4</sub> integrated Li<sub>1.15</sub>Nb<sub>0.15</sub>Mn<sub>0.7</sub>O<sub>2</sub>, Li<sub>1.2</sub>P<sub>0.06</sub>Nb<sub>0.13</sub>Mn<sub>0.61</sub>O<sub>2</sub>, shows much improved cyclability when compared with the sample without Li<sub>3</sub>PO<sub>4</sub>. Approximately 80 % of reversible capacity is retained after 100-cycle test at a rate of 200 mA g<sup>−1</sup>. Moreover, electrode kinetics are significantly improved by Li<sub>3</sub>PO<sub>4</sub> integration, and Li<sub>1.2</sub>P<sub>0.06</sub>Nb<sub>0.13</sub>Mn<sub>0.61</sub>O<sub>2</sub> delivers a discharge capacity of 200 mA h g<sup>−1</sup> at a rate of 640 mA g<sup>−1</sup>. Li<sub>1.2</sub>P<sub>0.06</sub>Nb<sub>0.13</sub>Mn<sub>0.61</sub>O<sub>2</sub> also shows improved thermal stability at elevated temperatures. From these results, the effectiveness of Li<sub>3</sub>PO<sub>4</sub> integration into nanosized disordered rocksalt oxides with anionic redox is discussed, and this finding leads to the development of metastable high-capacity positive electrode materials for advanced Li-ion batteries.</p>
-
Nanaka Shimada, Yosuke Ugata, Satoshi Nishikawa, Daisuke Shibata, Toshiaki Ohta, Naoaki Yabuuchi
Energy Advances 2 ( 4 ) 508 - 512 2023年3月 [査読有り]
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 単著
High-capacity electrode materials made of abundant elements are necessary to develop cost-effective energy storage applications. An emerging new chemistry has involved a series of electrode materials with a cation-disordered rock salt structure, and Li-excess and Mn-based oxides with disordered structures are attractive candidates for this purpose. Large reversible capacities for these electrode materials are obtained through both cationic/anionic redox. However, cyclability associated with insufficient reversibility of anionic redox in carbonate-based electrolyte solutions is not acceptable for practical applications. Herein, a significant improvement of electrode reversibility was achieved with highly concentrated electrolyte consisting of LiN(SO2F)2 and dimethyl carbonate. A practical problem when using high-viscosity concentrated electrolyte, i.e., non-wettability of concentrated electrolyte to polyolefin separators with small pores, was also effectively solved by using an aramid-coated polyolefin membrane. The improvement of reversibility for anionic redox associated with the suppression of oxygen loss, was clearly demonstrated by the results of X-ray absorption spectroscopy of nanosized Li1.14Ti0.29Mn0.57O2 with the concentrated electrolyte solution and aramid-coated separator. These findings have shown the future possibility of developing applications of high-energy batteries without ions of non-abundant nickel/cobalt. High-capacity electrode materials made of abundant elements are necessary to develop cost-effective energy storage applications.
-
Zhang Yanjia, Sawamura Miho, Harada Maho, Noda Yusuke, Nakayama Masanobu, Goto Masato, Kan Daisuke, … 全著者表示
Zhang Yanjia, Sawamura Miho, Harada Maho, Noda Yusuke, Nakayama Masanobu, Goto Masato, Kan Daisuke, Shimakawa Yuichi, Campeon Benoit Denis Louis, Shibata Daisuke, Ohta Toshiaki, Yabuuchi Naoaki 閉じる
Journal of Physical Chemistry C 127 ( 5 ) 2194 - 2203 2023年2月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society 共著
Li-excess electrode materials potentially boost the energy density of Li-ion batteries, but the origin of the instability of anionic redox in cation-disordered rocksalt material is still under debate. In this study, a binary system of Li3NbO4-CoO is targeted as electrode materials for lithium storage applications. In this binary system, stoichiometric LiCo2/3Nb1/3O2 crystallizes into a rocksalt-type structure with partial ordering of Nb ions. Upon increase of the Li3NbO4 fraction, cation ordering is lost, forming a cation-disordered rocksalt structure in Li-excess phases. Although Li-excess Li4/3Co2/9Nb4/9O2 delivers a large reversible capacity as electrode materials, inferior cyclability and large voltage hysteresis for charge/discharge curves are noted. Irreversible structural changes in electrochemical cycles are also evidenced from results of in situ XRD measurements, suggesting that anionic redox is destabilized for Li4/3Co2/9Nb4/9O2. X-ray absorption spectroscopy reveals that partial stabilization of ligand holes as observed in SrCoO3 is achieved for these oxides. Ligand holes are more effectively stabilized for Li7/6Co4/9Nb7/18O2 with less Li-excess and Co-rich composition. Through systematic study of the binary system of Li3NbO4-CoO with different chemical compositions, factors affecting reversibility and irreversibility of anionic redox are further discussed.
-
Uematsu Hideshi, Ishiguro Nozomu, Abe Masaki, Takazawa Shuntaro, Kang Jungmin, Konuma Itsuki, Yabuu … 全著者表示
Uematsu Hideshi, Ishiguro Nozomu, Abe Masaki, Takazawa Shuntaro, Kang Jungmin, Konuma Itsuki, Yabuuchi Naoaki, Takahashi Yukio 閉じる
PHYSICAL CHEMISTRY CHEMICAL PHYSICS 25 ( 5 ) 3867 - 3874 2023年2月 [査読有り]
DOI Web of Science PubMed CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 共著
Lithium-rich disordered rocksalt-type cathode materials are promising for high-capacity and high-power lithium-ion batteries. Many of them are synthesized by mechanical milling and may have heterogeneous structures and chemical states at the nanoscale. In this study, we performed X-ray spectroscopic ptychography measurements of Li-rich disordered rocksalt-type oxide particles synthesized by mechanical milling before and after delithiation reaction at the vanadium K absorption edge, and visualized their structures and chemical state with a spatial resolution of similar to 100 nm. We classified multiple domains with different chemical states via clustering analysis. A comparison of the domain distribution trends of the particles before and after the delithiation reaction revealed the presence of domains, suggesting that the delithiation reaction was suppressed.
-
Yanjia Zhang, Miho Sawamura, Maho Harada, Yusuke Noda, Masanobu Nakayama, Masato Goto, Daisuke Kan, … 全著者表示
Yanjia Zhang, Miho Sawamura, Maho Harada, Yusuke Noda, Masanobu Nakayama, Masato Goto, Daisuke Kan, Yuichi Shimakawa, Benoît Denis Louis Campéon, Daisuke Shibata, Toshiaki Ohta, Naoaki Yabuuchi 閉じる
The Journal of Physical Chemistry C 127 ( 5 ) 2194 - 2203 2023年1月 [査読有り]
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 単著
-
P3-type layered K0.6Cr0.6Ti0.4O2 for potassium storage applications
Pandey Alok K., Campeon Benoit D. L., Konuma Itsuki, Yabuuchi Naoaki
Energy Advances 2 ( 1 ) 98 - 102 2023年1月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Royal Society of Chemistry 共著
P3-type K0.6Cr0.6Ti0.4O2 is synthesized via a solid-state method and is tested as a positive electrode for potassium-ion batteries. It operates at a higher potential of E-ave. = 3.14 V vs. K/K+, while delivering a reversible capacity superior to 40 mA h g(-1) in a K cell. Excellent reversibility as an electrode material is achieved with a 3.9 V cutoff based on solid-state redox reaction of Cr ions. An in situ X-ray diffraction study reveals a reversible phase transition during K+ ion extraction/insertion. Furthermore, the excellent cyclability for 500 cycles at a rate of 40 mA g(-1) coupled with good rate capability demonstrates its advantage as the host structure for potassium ion storage applications.
-
A near dimensionally invariable high-capacity positive electrode material
Itsuki Konuma, Damian Goonetilleke, Neeraj Sharma, Takuhiro Miyuki, Satoshi Hiroi, Koji Ohara, Yuki … 全著者表示
Itsuki Konuma, Damian Goonetilleke, Neeraj Sharma, Takuhiro Miyuki, Satoshi Hiroi, Koji Ohara, Yukio Yamakawa, Yusuke Morino, Hongahally Basappa Rajendra, Toru Ishigaki, Naoaki Yabuuchi 閉じる
Nature Materials 22 ( 2 ) 225 - 234 2022年12月 [査読有り]
DOI Web of Science PubMed CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Nature Portfolio 単著
Delivering inherently stable lithium-ion batteries is a key challenge. Electrochemical lithium insertion and extraction often severely alters the electrode crystal chemistry, and this contributes to degradation with electrochemical cycling. Moreover, electrodes do not act in isolation, and this can be difficult to manage, especially in all-solid-state batteries. Therefore, discovering materials that can reversibly insert and extract large quantities of the charge carrier (Li+), that is, high capacity, with inherent stability during electrochemical cycles is necessary. Here lithium-excess vanadium oxides with a disordered rocksalt structure are examined as high-capacity and long-life positive electrode materials. Nanosized Li8/7Ti2/7V4/7O2 in optimized liquid electrolytes deliver a large reversible capacity of over 300 mAh g(-1) with two-electron V3+/V5+ cationic redox, reaching 750 Wh kg(-1) versus metallic lithium. Critically, highly reversible Li storage and no capacity fading for 400 cycles were observed in all-solid-state batteries with a sulfide-based solid electrolyte. Operando synchrotron X-ray diffraction combined with high-precision dilatometry reveals excellent reversibility and a near dimensionally invariable character during electrochemical cycling, which is associated with reversible vanadium migration on lithiation and delithiation. This work demonstrates an example of an electrode/electrolyte couple that produces high-capacity and long-life batteries enabled by multi-electron transition metal redox with a structure that is near invariant during cycling.
-
Extended conjugated carbonyl-containing polymer as a negative electrode material for Na-ion batteries
Sugawara Kazuki, Yabuuchi Naoaki, Miyasaka Makoto
POLYMER JOURNAL 54 ( 9 ) 1111 - 1118 2022年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Unexpectedly Large Contribution of Oxygen to Charge Compensation Triggered by Structural Disordering: Detailed Experimental and Theoretical Study on a Li₃NbO₄–NiO Binary System
福間 隆太朗, 原田 真帆, 趙 文文, 澤村 美穂, 野田 祐輔, 中山 将伸, 後藤 真人, 菅 大介, 島川 祐一, 米村 雅雄, 池田 直宏, 綿貫 竜太, 福山 小百合, 韓 貞姫, 福満 … 全著者表示
福間 隆太朗, 原田 真帆, 趙 文文, 澤村 美穂, 野田 祐輔, 中山 将伸, 後藤 真人, 菅 大介, 島川 祐一, 米村 雅雄, 池田 直宏, 綿貫 竜太, 福山 小百合, 韓 貞姫, 福満 仁志, 山中 恵介, 山岸 弘奈, 太田 俊明, 藪内 直明 閉じる
ACS Central Science 8 ( 6 ) 775 - 794 2022年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：American Chemical Society (ACS) 共著
Dependence on lithium-ion batteries for automobile applications is rapidly increasing. The emerging use of anionic redox can boost the energy density of batteries, but the fundamental origin of anionic redox is still under debate. Moreover, to realize anionic redox, many reported electrode materials rely on manganese ions through π-type interactions with oxygen. Here, through a systematic experimental and theoretical study on a binary system of Li₃NbO₄–NiO, we demonstrate for the first time the unexpectedly large contribution of oxygen to charge compensation for electrochemical oxidation in Ni-based materials. In general, for Ni-based materials, e.g., LiNiO₂, charge compensation is achieved mainly by Ni oxidation, with a lower contribution from oxygen. In contrast, for Li₃NbO₄–NiO, oxygen-based charge compensation is triggered by structural disordering and σ-type interactions with nickel ions, which are associated with a unique environment for oxygen, i.e., a linear Ni–O–Ni configuration in the disordered system. Reversible anionic redox with a small hysteretic behavior was achieved for LiNi₂/₃Nb₁/₃O₂ with a cation-disordered Li/Ni arrangement. Further Li enrichment in the structure destabilizes anionic redox and leads to irreversible oxygen loss due to the disappearance of the linear Ni–O–Ni configuration and the formation of unstable Ni ions with high oxidation states. On the basis of these results, we discuss the possibility of using σ-type interactions for anionic redox to design advanced electrode materials for high-energy lithium-ion batteries.
-
Metastable and Nanosized Li1.2Nb0.2V0.6O2 for High-Energy Li-ion Batteries
QI Ruijie, CAMPÉON Benoît D. L., KONUMA Itsuki, SATO Yoshihiko, KANEDA Yuko, KONDO Masashi, YABUUCH … 全著者表示
QI Ruijie, CAMPÉON Benoît D. L., KONUMA Itsuki, SATO Yoshihiko, KANEDA Yuko, KONDO Masashi, YABUUCHI Naoaki 閉じる
Electrochemistry 90 ( 3 ) 037005 - 037005 2022年3月 [査読有り]
DOI Web of Science CiNii Research
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：公益社団法人 電気化学会 共著
<p>A Li-excess cation-disordered rocksalt oxide, Li<sub>1.2</sub>Nb<sub>0.2</sub>V<sub>0.6</sub>O<sub>2</sub>, with higher theoretical capacity than traditional stoichiometric and layered oxides, is synthesized and tested as positive electrode materials for battery applications. Although Li<sub>1.2</sub>Nb<sub>0.2</sub>V<sub>0.6</sub>O<sub>2</sub> cannot be synthesized by conventional calcination method, a single phase and metastable oxide is successfully synthesized by high-energy mechanical milling. Electrode performance of metastable and nanosized Li<sub>1.2</sub>Nb<sub>0.2</sub>V<sub>0.6</sub>O<sub>2</sub> is significantly improved by heat treatment at 600 °C. Heat treated Li<sub>1.2</sub>Nb<sub>0.2</sub>V<sub>0.6</sub>O<sub>2</sub> with a partial cation ordered layered structure delivers a high reversible specific capacity of 320 mAh g<sup>−1</sup> on the basis of highly reversible two-electron redox of V ions. Moreover, inferior cyclability originating from the dissolution of V ions is successfully improved by using concentrate electrolyte solution, and over 90 % capacity retention is achieved after 50 cycles. This finding opens a new way to design high-capacity metastable Li-excess oxides for advanced Li-ion batteries with higher energy density.</p>
-
Rational material design of Li-excess metal oxides with disordered rock salt structure
Naoaki Yabuuchi
Current Opinion in Electrochemistry 34 100978 2022年3月 [査読有り] [招待有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Elsevier 単著
-
Magnetic Compton Scattering Study of Li-Rich Battery Materials
Kosuke Suzuki, Yuji Otsuka, Kazushi Hoshi, Hiroshi Sakurai, Naruki Tsuji, Kentaro Yamamoto, Naoaki … 全著者表示
Kosuke Suzuki, Yuji Otsuka, Kazushi Hoshi, Hiroshi Sakurai, Naruki Tsuji, Kentaro Yamamoto, Naoaki Yabuuchi, Hasnain Hafiz, Yuki Orikasa, Yoshiharu Uchimoto, Yoshiharu Sakurai, Venkatasubramanian Viswanathan, Arun Bansil, Bernardo Barbiellini 閉じる
Condensed Matter 7 ( 1 ) 4 2022年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Rocksalt and Layered Metal Sulfides for Li Storage Applications: LiMe0.5Ti0.5S2 (Me = Fe2+, Mn2+, and Mg2+)
Miyuki Shinoda, Hongahally Basappa Rajendra, Naoaki Yabuuchi
ACS Applied Energy Materials 5 ( 3 ) 2642 - 2646 2022年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Highly Graphitic Carbon Coating on Li1.25Nb0.25V0.5O2 Derived from a Precursor with a Perylene Core for High-Power Battery Applications
Ruijie Qi, Itsuki Konuma, Benoît D. L. Campéon, Yuko Kaneda, Masashi Kondo, Naoaki Yabuuchi
Chemistry of materials 34 ( 4 ) 1946 - 1955 2022年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Nanosized and metastable molybdenum oxides as negative electrode materials for durable high-energy aqueous Li-ion batteries
Yun Jeongsik, Sagehashi Ryota, Sato Yoshihiko, Masuda Takuya, Hoshino Satoshi, Rajendra Hongahally … 全著者表示
Yun Jeongsik, Sagehashi Ryota, Sato Yoshihiko, Masuda Takuya, Hoshino Satoshi, Rajendra Hongahally Basappa, Okuno Kazuki, Hosoe Akihisa, Bandarenka Aliaksandr S., Yabuuchi Naoaki 閉じる
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 118 ( 48 ) 2021年11月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Yun Jeongsik, Sagehashi Ryota, Sato Yoshihiko, Masuda Takuya, Hoshino Satoshi, Rajendra Hongahally … 全著者表示
Yun Jeongsik, Sagehashi Ryota, Sato Yoshihiko, Masuda Takuya, Hoshino Satoshi, Rajendra Hongahally Basappa, Okuno Kazuki, Hosoe Akihisa, Bandarenka Aliaksandr S., Yabuuchi Naoaki 閉じる
Proceedings of the National Academy of Sciences of the United States of America 118 ( 48 ) 2021年11月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：National Academy of Sciences 共著
The development of inherently safe energy devices is a key challenge, and aqueous Li-ion batteries draw large attention for this purpose. Due to the narrow electrochemical stable potential window of aqueous electrolytes, the energy density and the selection of negative electrode materials are significantly limited. For achieving durable and high-energy aqueous Li-ion batteries, the development of negative electrode materials exhibiting a large capacity and low potential without triggering decomposition of water is crucial. Herein, a type of a negative electrode material (i.e., LixNb2/7Mo3/7O2) is proposed for high-energy aqueous Li-ion batteries. LixNb2/7Mo3/7O2 delivers a large capacity of similar to 170 mA . h . g(-1) with a low operating potential range of 1.9 to 2.8 versus Li/Li+ in 21 m lithium bis(trifluoromethanesulfonyl)amide (LiTFSA) aqueous electrolyte. A full cell consisting of Li1.05Mn1.95O4/Li9/7Nb2/7Mo3/7O2 presents high energy density of 107 W . h . kg(-1) as the maximum value in 21 m LiTFSA aqueous electrolyte, and 73% in capacity retention is achieved after 2,000 cycles. Furthermore, hard X-ray photoelectron spectroscopy study reveals that a protective surface layer is formed at the surface of the negative electrode, by which the high-energy and durable aqueous batteries are realized with LixNb2/7Mo3/7O2. This work combines a high capacity with a safe negative electrode material through delivering the Mo-based oxide with unique nanosized and metastable characters.
-
Fundamentals of metal oxide/oxyfluoride electrodes for Li-/Na-ion batteries
Benoît Denis Louis Campéon and Naoaki Yabuuchi
Chemical Physics Reviews 2 ( 4 ) 2021年11月 [査読有り] [招待有り]
DOI Web of Science CiNii Research
担当区分：最終著者, 責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：AIP Publishing 単著
Lithium-ion batteries provide the development of a clean and sustainable society based on renewable energy resources. To further enhance energy density and reduce the cost of batteries, innovations on electrode materials and high-performance nickel-/cobalt-free materials are necessary. In this review, lithium-excess manganese-based electrode materials with layered/rock salt oxides/oxyfluorides are emphasized because of their potential ability to be utilized as advanced and low-cost lithium-ion batteries in the near future. For these emerging electrode materials, higher energy density is realized, compared with traditional layered materials based on nickel/cobalt ions, relying on anionic and/or cationic redox as multi-electron reactions. Although, currently, anionic redox suffers from degradation of reversibility on continuous cycles, significant progress on theoretical understanding and material design concepts has been made in the past several years. Recently, as alternatives to traditional layered materials, many disordered rock salt oxides, including metastable and nanosized oxyfluorides, have been also found as a new class of high-capacity electrode materials with anionic/cationic redox. In the later part, these new trends for the material design are also extended to the development of electrode materials for sodium-ion batteries. By reviewing the fundamental and recent research progress in metal oxide/oxyfluoride electrodes, a valuable guide for materials scientists in the field of batteries is provided to accelerate the industrial development of high-performance nickel-/cobalt-free electrode materials. (c) 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
-
Why is the O3 to O1 phase transition hindered in LiNiO2 on full delithiation?
Ikeda Naohiro, Konuma Itsuki, Rajendra Hongahally Basappa, Aida Taira, Yabuuchi Naoaki
JOURNAL OF MATERIALS CHEMISTRY A 9 ( 29 ) 15963 - 15967 2021年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Tomographic reconstruction of oxygen orbitals in lithium-rich battery materials
Hafiz Hasnain, Suzuki Kosuke, Barbiellini Bernardo, Tsuji Naruki, Yabuuchi Naoaki, Yamamoto Kentaro … 全著者表示
Hafiz Hasnain, Suzuki Kosuke, Barbiellini Bernardo, Tsuji Naruki, Yabuuchi Naoaki, Yamamoto Kentaro, Orikasa Yuki, Uchimoto Yoshiharu, Sakurai Yoshiharu, Sakurai Hiroshi, Bansil Arun, Viswanathan Venkatasubramanian 閉じる
NATURE 594 ( 7862 ) 213 - 216 2021年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Stabilization of Na Storage Reversibility by Ti Integration into O3-Type NaMnO2
Takuro Sato, Kazuki Yoshikawa, Wenwen Zhao, Tokio Kobayashi, Hongahally Basappa Rajendra, Masao Yon … 全著者表示
Takuro Sato, Kazuki Yoshikawa, Wenwen Zhao, Tokio Kobayashi, Hongahally Basappa Rajendra, Masao Yonemura, Naoaki Yabuuchi 閉じる
Energy Material Advances 2021 9857563-1 - 9857563-12 2021年5月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
P2-type layered Na0.67Cr0.33Mg0.17Ti0.5O2 for Na storage applications
Raizo Umezawa, Yuka Tsuchiya, Toru Ishigaki, Hongahally Basappa Rajendra, Naoaki Yabuuchi
Chemical Communications 57 ( 22 ) 2756 - 2759 2021年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Stabilization of Na Storage Reversibility by Ti Integration into O ' 3-Type NaMnO2
Sato Takuro, Yoshikawa Kazuki, Zhao Wenwen, Kobayashi Tokio, Rajendra Hongahally Basappa, Yonemura … 全著者表示
Sato Takuro, Yoshikawa Kazuki, Zhao Wenwen, Kobayashi Tokio, Rajendra Hongahally Basappa, Yonemura Masao, Yabuuchi Naoaki 閉じる
ENERGY MATERIAL ADVANCES 2021 2021年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Stabilization of Na Storage Reversibility by Ti Integration into O ' 3-Type NaMnO2 (vol 2021, 9857563, 2021)
Sato Takuro, Yoshikawa Kazuki, Zhao Wenwen, Kobayashi Tokio, Rajendra Hongahally Basappa, Yonemura … 全著者表示
Sato Takuro, Yoshikawa Kazuki, Zhao Wenwen, Kobayashi Tokio, Rajendra Hongahally Basappa, Yonemura Masao, Yabuuchi Naoaki 閉じる
ENERGY MATERIAL ADVANCES 2021 2021年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
Nanostructured LiMnO2 with Li3PO4 Integrated at the Atomic Scale for High-Energy Electrode Materials with Reversible Anionic Redox
Miho Sawamura, Sho Kobayakawa, Jun Kikkawa, Neeraj Sharma, Damian Goonetilleke, Aditya Rawal, Nanak … 全著者表示
Miho Sawamura, Sho Kobayakawa, Jun Kikkawa, Neeraj Sharma, Damian Goonetilleke, Aditya Rawal, Nanaka Shimada, Kentaro Yamamoto, Rina Yamamoto, Yingying Zhou, Yoshiharu Uchimoto, Koji Nakanishi, Kei Mitsuhara, Koji Ohara, Jiwon Park, Hye Ryung Byon, Hiroaki Koga, Masaki Okoshi, Toshiaki Ohta, Naoaki Yabuuchi 閉じる
ACS Central Science 6 ( 12 ) 2326 - 2338 2020年12月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
藪内 直明
関西電気化学テキストシリーズ 2020.1 ( 0 ) 101 - 114 2020年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：公益社団法人 電気化学会関西支部 単著
<p></p>
-
Tuning cation migration
Yabuuchi Naoaki
NATURE MATERIALS 19 ( 4 ) 372 - 373 2020年4月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 単著
-
Activation and stabilization mechanisms of anionic redox for Li storage applications: Joint experimental and theoretical study on Li2TiO3–LiMnO2 binary system
Yuki Kobayashi, Miho Sawamura, Sayaka Kondo, Maho Harada, Yusuke Noda, Masanobu Nakayama, Sho Kobay … 全著者表示
Yuki Kobayashi, Miho Sawamura, Sayaka Kondo, Maho Harada, Yusuke Noda, Masanobu Nakayama, Sho Kobayakawa, Wenwen Zhao, Aiko Nakao, Akira Yasui, Hongahally Basappa Rajendra, Keisuke Yamanaka, Toshiaki Ohta, and Naoaki Yabuuchi 閉じる
Materials Today 37 43 - 55 2020年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Structural Analysis of Sucrose-Derived Hard Carbon and Correlation with the Electrochemical Properties for Lithium, Sodium, and Potassium Insertion
Kei Kubota, Saori Shimadzu, Naoaki Yabuuchi, Satoshi Tominaka, Soshi Shiraishi, Maria Abreu-Sepulve … 全著者表示
Kei Kubota, Saori Shimadzu, Naoaki Yabuuchi, Satoshi Tominaka, Soshi Shiraishi, Maria Abreu-Sepulveda, Ayyakkannu Manivannan, Kazuma Gotoh, Mika Fukunishi, Mouad Dahbi, and Shinichi Komaba 閉じる
Chemistry of Materials 32 ( 7 ) 2961 - 2977 2020年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Charge Compensation Mechanism of Lithium-Excess Metal Oxides with Different Covalent and Ionic Characters Revealed by Operando Soft and Hard X-ray Absorption Spectroscopy
Yamamoto Kentaro, Zhou Yingying, Yabuuchi Naoaki, Nakanishi Koji, Yoshinari Takahiro, Kobayashi Tak … 全著者表示
Yamamoto Kentaro, Zhou Yingying, Yabuuchi Naoaki, Nakanishi Koji, Yoshinari Takahiro, Kobayashi Takanori, Kobayashi Yuki, Yamamoto Rina, Watanabe Aruto, Orikasa Yuki, Tsuruta Kazuki, Park Jiwon, Byon Hye Ryung, Tamenori Yusuke, Ohta Toshiaki, Uchimoto Yoshiharu 閉じる
CHEMISTRY OF MATERIALS 32 ( 1 ) 139 - 147 2020年1月 [査読有り]
記述言語：日本語 掲載種別：研究論文（学術雑誌） 共著
-
Naoaki Yabuuchi
The Chemical Record Vol.19 ( 4 ) 2019年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Wiley Online Library 単著
-
Nanosize Cation‐Disordered Rocksalt Oxides: Na2TiO3–NaMnO2 Binary System
Tokio Kobayashi, Wenwen Zhao, Hongahally Basappa Rajendra, Keisuke Yamanaka, Toshiaki Ohta, N … 全著者表示
Tokio Kobayashi, Wenwen Zhao, Hongahally Basappa Rajendra, Keisuke Yamanaka, Toshiaki Ohta, Naoaki Yabuuchi 閉じる
SmallEarly View 16 1902462 - 6 pages 2019年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Wiley Online Library 共著
-
Li/Na Storage Properties of Disordered Carbons Synthesized by Mechanical Milling
Soma SHIMIZU, Hongahally Basappa RAJENDRA, Ryuta WATANUKI, Naoaki YABUUCHI
Electrochemistry Vol.87 ( 5 ) 276 - 280 2019年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：J-STAGE 単著
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542 -
Improved Electrode Performance of Lithium-Excess Molybdenum Oxyfluoride: Titanium Substitution with Concentrated Electrolyte
N Takeda, I Ikeuchi, R Natsui, K Nakura, N yabuuchi
ACS Appl. Energy Mater 2 ( 3 ) 1629 - 1633 2019年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Metastable and Nanosize Cation-Disordered Rocksalt-type Oxides; Revisit on Stoichiometric LiMnO2 and NaMnO2
Takahito Sato, Kei Sato, Wenwen Zhao, Yoshio Kajiya and Naoaki Yabuuchi
Journal of Materials Chemistry A 6 ( 28 ) 13943–13951 2018年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ROYAL SOC CHEMISTRY 共著
-
Li4/3Ni1/3Mo1/3O2-LiNi1/2Mn1/2O2 Binary System as High Capacity Positive Electrode Materials for Rechargeable Lithium Batteries
Wenwen Zhao, Kazuma Yamaguchi, Takahito Sato, and Naoaki Yabuuchi
Journal of The Electrochemical Society 165 ( 7 ) A1357 - A1362 2018年5月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ELECTROCHEMICAL SOC INC 共著
-
Effect of diphenylethane as an electrolyte additive to enhance hightemperature durability of LiCoO2/graphite cells
Kakeru Yatabe, Tatsuo Horiba, Kei Kubota, Mika Fukunishi, Naoaki Yabuuchi, Hiroshi Oji, Jin-Yong So … 全著者表示
Kakeru Yatabe, Tatsuo Horiba, Kei Kubota, Mika Fukunishi, Naoaki Yabuuchi, Hiroshi Oji, Jin-Yong Son, Yi-Tao Cui, Satoshi Yasuno, and Shinichi Komaba 閉じる
Electrochimica Acta 270 120 - 128 2018年4月
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Influence of synthesis conditions on electrochemical properties of P2-type Na2/3Fe2/3Mn1/3O2 for rechargeable Na batteries
Wenwen Zhao, Yuka Tsuchiya, and Naoaki Yabuuchi
Small Methods 2 1800032 2018年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Synthesis of Conjugated Carbonyl Containing Polymer Negative Electrodes for Sodium Ion Batteries
Ryosuke Yamamoto, Naoaki Yabuuchi, and Makoto Miyasaka
Journal of The Electrochemical Society 165 434 - 438 2018年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ELECTROCHEMICAL SOC INC 共著
-
Effect of Nanosizing on Reversible Sodium Storage in a NaCrO2 Electrode
Yuka Tsuchiya, Alexey M. Glushenkov, and Naoaki Yabuuchi
ACS Applied Nano Materials 1 364 - 370 2018年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Material Design Concept of Lithium‐Excess Electrode Materials with Rocksalt‐Related Structures for Rechargeable Non‐Aqueous Batteries
Naoaki Yabuuchi
The Chemical Record 19 ( 4 ) 2018年 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 単著
-
Reversible Li storage for nanosize cation/anion-disordered rocksalt-type LiMoO2-x LiFoxyfluorides (0 <- x <- 2) binary system
Nanami Takeda, Satoshi Hoshino, Lixin Xie, Shuo Chen, Issei Ikeuchi, Ryuichi Natsui, Kensuke Nakura … 全著者表示
Nanami Takeda, Satoshi Hoshino, Lixin Xie, Shuo Chen, Issei Ikeuchi, Ryuichi Natsui, Kensuke Nakura, Naoaki Yabuuchi 閉じる
Journal of Power Sources 367 122 - 129 2017年11月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
High performance red phosphorus electrode in ionic liquid-based electrolyte for Na-ion batteries
Mouad Dahbi, Mika Fukunishi, Tatsuo Horiba, Naoaki Yabuuchi, Satoshi Yasuno, Shinichi Komaba
Journal of Power Sources 363 404 - 412 2017年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ELSEVIER 共著
-
Acrylonitrile-grafted poly(vinyl alcohol) copolymer as effective binder for high-voltage spinel positive electrode
Shinichi Tanaka, Takuya Narutomi, Shigeru Suzuki, Aiko Nakao, Hiroshi Oji, and Naoaki Yabuuchi
Journal of Power Sources 358 121 - 127 2017年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ELSEVIER 共著
-
All-Solid-State Ion-Selective Electrodes with Redox-Active Lithium, Sodium, and Potassium Insertion Materials as Inner Solid-Contact Layer
Shinichi Komaba, Tatsuya Akatsuka, Kohei Ohura, Chihiro Suzuki, Naoaki Yabuuchi, Shintaro Kanazawa, … 全著者表示
Shinichi Komaba, Tatsuya Akatsuka, Kohei Ohura, Chihiro Suzuki, Naoaki Yabuuchi, Shintaro Kanazawa, Kazuhiko Tsuchiya and Taku Hasegawa 閉じる
Analyst 142 ( 20 ) 3857 - 3866 2017年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：ROYAL SOC CHEMISTRY 共著
-
Lithium-Excess Cation-Disordered Rocksalt-Type Oxide with Nano-Scale Phase Segregation: Li1.25Nb0.25V0.5O2
Mizuki Nakajima and Naoaki Yabuuchi
Chemistry of Materials 29 6927 - 6935 2017年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Na-Excess Cation-Disordered Rocksalt Oxide: Na1.3Nb0.3Mn0.4O2
Kei Sato, Masanobu Nakayama, Alexey M. Glushenkov, Takahiro Mukai, Yu Hashimoto, Keisuke Yamanaka, … 全著者表示
Kei Sato, Masanobu Nakayama, Alexey M. Glushenkov, Takahiro Mukai, Yu Hashimoto, Keisuke Yamanaka, Masashi Yoshimura, Toshiaki Ohta, and Naoaki Yabuuchi 閉じる
Chemistry of Materials 29 5043 - 5047 2017年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Solid-State Redox Reaction of Oxide Ions for Rechargeable Batteries
Naoaki Yabuuchi
Chemistry Letters 46 ( 4 ) 412 - 422 2017年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元： The Chemical Society of Japan 単著
-
Reversible Three-Electron Redox Reaction of Mo3+/Mo6+ for Rechargeable Lithium Batteries
Satoshi Hoshino, Alexey M. Glushenkov, Shinnosuke Ichikawa, Tetsuya Ozaki, Tokuo Inamasu, and Naoak … 全著者表示
Satoshi Hoshino, Alexey M. Glushenkov, Shinnosuke Ichikawa, Tetsuya Ozaki, Tokuo Inamasu, and Naoaki Yabuuchi 閉じる
ACS Energy Letters 2 733 - 738 2017年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Origin of stabilization and destabilization in solid-state redox reaction of oxide ions for lithium-ion batteries
Naoaki Yabuuchi, Masanobu Nakayama, Mitsue Takeuchi, Shinichi Komaba, Yu Hashimoto, Takahiro Mukai, … 全著者表示
Naoaki Yabuuchi, Masanobu Nakayama, Mitsue Takeuchi, Shinichi Komaba, Yu Hashimoto, Takahiro Mukai, Hiromasa Shiiba, Kei Sato, Yuki Kobayashi, Aiko Nakao, Masao Yonemura, Keisuke Yamanaka, Kei Mitsuhara, and Toshiaki Ohta 閉じる
Nature Communications 7 13814 2016年12月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Thermal Stability of NaxCrO2 for Rechargeable Sodium Batteries; Studies by High-Temperature Synchrotron X-ray Diffraction
Naoaki Yabuuchi, Issei Ikeuchi, Kei Kubota, and Shinichi Komaba
ACS Applied Materials & Interfaces 8 32292 - 32299 2016年11月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Layered NaxCrxTi1-xO2 as Bifunctional Electrode Materials for Rechargeable Sodium Batteries
Yuka Tsuchiya, Kazuki Takanashi, Takuya Nishinobo, Akiko Hokura, Masao Yonemura, Takeshi Matsukawa, … 全著者表示
Yuka Tsuchiya, Kazuki Takanashi, Takuya Nishinobo, Akiko Hokura, Masao Yonemura, Takeshi Matsukawa, Toru Ishigaki, Keisuke Yamanaka, Toshiaki Ohta, and Naoaki Yabuuchi 閉じる
Chemistry of Materials 28 7006 - 7016 2016年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Synthesis and Electrode Performance of Li4MoO5-LiFeO2 Binary System as Positive Electrode Materials for Rechargeable Lithium Batteries
Takashi Matsuhara, Yuka Tsuchiya, Keisuke Yamanaka, Kei Mitsuhara, Toshiaki Ohta, and Naoaki Yabuuch
Electrochemistry 84 797 - 801 2016年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Understanding the Structural Evolution and Redox Mechanism of a NaFeO2 -NaCoO2 Solid Solution for Sodium-Ion Batteries
Kei Kubota, Takuya Asari, Hiroaki Yoshida, Naoaki Yabuuchi, Hiromasa Shiiba, Masanobu Nakayama, an … 全著者表示
Kei Kubota, Takuya Asari, Hiroaki Yoshida, Naoaki Yabuuchi, Hiromasa Shiiba, Masanobu Nakayama, and Shinichi Komaba 閉じる
Advanced Functional Materials 26 6047 - 6059 2016年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Impact of the Cut-Off Voltage on Cyclability and Passive Interphase of Sn-Polyacrylate Composite Electrodes for Sodium-Ion Batteries
Mika Fukunishi, Naoaki Yabuuchi, Mouad Dahbi, Jin-Young Son, Yitao Cui, Hiroshi Oji, and Shinichi K … 全著者表示
Mika Fukunishi, Naoaki Yabuuchi, Mouad Dahbi, Jin-Young Son, Yitao Cui, Hiroshi Oji, and Shinichi Komaba 閉じる
Journal of Physical Chemistry C 120 15017 - 15026 2016年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Black Phosphorus as a High-Capacity, High-Capability Negative Electrode for Sodium-Ion Batteries: Investigation of the Electrode/Electrolyte Interface
Mouad Dahbi, Naoaki Yabuuchi, Mika Fukunishi, Kei Kubota, Kuniko Chihara, Kazuyasu Tokiwa, Xue-fang … 全著者表示
Mouad Dahbi, Naoaki Yabuuchi, Mika Fukunishi, Kei Kubota, Kuniko Chihara, Kazuyasu Tokiwa, Xue-fang Yu, Hiroshi Ushiyama, Koichi Yamashita, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, and Shinichi Komaba 閉じる
Chemistry of Materials 28 1625 - 1635 2016年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Synthesis and electrochemical properties of Li1.3Nb0.3V0.4O2 as a positive electrode material for rechargeable lithium batteries
Naoaki Yabuuchi, Mitsue Takeuchi, Shinichi Komaba, Shinnosuke Ichikawa, Tetsuya Ozaki and Tokuo Ina … 全著者表示
Naoaki Yabuuchi, Mitsue Takeuchi, Shinichi Komaba, Shinnosuke Ichikawa, Tetsuya Ozaki and Tokuo Inamasu 閉じる
Chemical Communications 52 2051 - 2054 2016年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Understanding Particle-Size-Dependent Electrochemical Properties of Li2MnO3-Based Positive Electrode Materials for Rechargeable Lithium Batteries
Naoaki Yabuuchi, Kei Kubota, Yoshinori Aoki, and Shinichi Komaba
Journal of Physical Chemistry C 120 875 - 885 2016年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Synthesis and Electrochemical Properties of Li4MoO5-NiO Binary System as Positive Electrode Materials for Rechargeable Lithium Batteries
Naoaki Yabuuchi, Yoshiyuki Tahara, Shinichi Komaba, Satsuki Kitada, and Yoshio Kajiya
Chemistry of Materials 28 416 - 419 2016年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Acrylic Acid-Based Copolymers as Functional Binder for Silicon/Graphite Composite Electrode in Lithium-Ion Batteries
Shoko Aoki, Zhen-Ji Han, Kiyofumi Yamagiwa, Naoaki Yabuuchi, Masahiro Murase, Kuniaki Okamoto, Taka … 全著者表示
Shoko Aoki, Zhen-Ji Han, Kiyofumi Yamagiwa, Naoaki Yabuuchi, Masahiro Murase, Kuniaki Okamoto, Takahiro Kiyosu, Michihiko Satoh, and Shinichi Komaba 閉じる
Journal of The Electrochemical Society 162 A2245 - A2249 2015年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
High-Capacity Electrode Materials for Rechargeable Lithium Batteries: Li3NbO4-based System with Cation Disordered Rocksalt Structure
Naoaki Yabuuchi, Mitsue Takeuchi, Masanobu Nakayama, Hiromasa Shiiba, Masahiro Ogawa, Keisuke Nakay … 全著者表示
Naoaki Yabuuchi, Mitsue Takeuchi, Masanobu Nakayama, Hiromasa Shiiba, Masahiro Ogawa, Keisuke Nakayama, Toshiaki Ohta, Daisuke Endo, Tetsuya Ozaki, Tokuo Inamasu, Kei Sato, and Shinichi Komaba 閉じる
Proceedings of the National Academy of Sciences of the United States of America 112 7650 - 7655 2015年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Improved High-Temperature Performance and Surface Chemistry of Graphite/LiMn2O4 Li-Ion Cells by Fluorosilane-Based Electrolyte Additive
Kiyofumi Yamagiwa, Daichi Morita, Naoaki Yabuuchi, Tatsuya Tanaka, Mika Fukunishi, Takayuki Taki, H … 全著者表示
Kiyofumi Yamagiwa, Daichi Morita, Naoaki Yabuuchi, Tatsuya Tanaka, Mika Fukunishi, Takayuki Taki, Hiroaki Watanabe, Takahiro Otsuka, Toru Yano, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, Shinichi Komaba 閉じる
Electrochimica Acta 160 347 - 356 2015年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Electrochemical lithiation performance and characterization of silicon-graphite composites with lithium, sodium, potassium, and ammonium polyacrylate binders
Zhen-Ji Han, Kiyofumi Yamagiwa, Naoaki Yabuuchi, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, Akinori K … 全著者表示
Zhen-Ji Han, Kiyofumi Yamagiwa, Naoaki Yabuuchi, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, Akinori Kogure, Takahiro Harada, Sumihisa Ishikawa 閉じる
Physical Chemistry Chemical Physics 17 3783 - 3795 2015年2月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
New Insight into Structural Evolution in Layered NaCrO2 during Electrochemical Sodium Extraction
Kei Kubota, Issei Ikeuchi, Tetsuri Nakayama, Chikara Takei, Naoaki Yabuuchi, Hiromasa Shiiba, Masan … 全著者表示
Kei Kubota, Issei Ikeuchi, Tetsuri Nakayama, Chikara Takei, Naoaki Yabuuchi, Hiromasa Shiiba, Masanobu Nakayama, and Shinichi Komaba 閉じる
Journal of Physical Chemistry C 119 166 - 175 2015年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Electrochemical Properties of LiCoO2 Electrodes with Latex Binders on High-Voltage Exposure
Naoaki Yabuuchi, Yuta Kinoshita, Kimio Misaki, Takashi Matsuyama, and Shinichi Komaba
Journal of The Electrochemical Society 162 A538 - A544 2015年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Research Development on Sodium-ion Batteries
Naoaki Yabuuchi, Kei Kubota, Mouad Dahbi, and Shinichi Komaba
Chemical Reviews 114 11636 - 11682 2014年12月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
A new electrode material for rechargeable sodium batteries: P2-type Na2/3[Mg0.28Mn0.72]O2 with anomalously high reversible capacity
Naoaki Yabuuchi, Ryo Hara, Kei Kubota, Jens Paulsen, Shinichi Kumakura, and Shinichi Komaba
Journal of Materials Chemistry A 2 16854 - 16855 2014年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Na2CoPO4F as a High-voltage Electrode Material for Na-ion Batteries
Kei Kubota, Kazuki Yokoh, Naoaki Yabuuchi, Shinichi Komaba
Electrochemistry 82 909 - 911 2014年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
New O2/P2-type Li-Excess Layered Manganese Oxides as Promising Multi-Functional Electrode Materials for Rechargeable Li/Na Batteries
Naoaki Yabuuchi, Ryo Hara, Masataka Kajiyama, Kei Kubota, Toru Ishigaki, Akinori Hoshikawa, and Sh … 全著者表示
Naoaki Yabuuchi, Ryo Hara, Masataka Kajiyama, Kei Kubota, Toru Ishigaki, Akinori Hoshikawa, and Shinichi Komaba 閉じる
Advanced Energy Materials 4 1301453 2014年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Negative Electrodes for Na-Ion Batteries
Mouad Dahbi, Naoaki Yabuuchi, Kei Kubota, Kazuyasu Tokiwa, and Shinichi Komaba
Physical Chemistry Chemical Physics 16 15007 - 15028 2014年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Fabrication of Carbon Felt-Based Multi-Enzyme Immobilized Anodes to Oxidize Sucrose for Biofuel Cells
Yutaka Handa, Kiyofumi Yamagiwa, Yutaro Ikeda, Yuichi Yanagisawa, Shinya Watanabe, Naoaki Yabuuchi, … 全著者表示
Yutaka Handa, Kiyofumi Yamagiwa, Yutaro Ikeda, Yuichi Yanagisawa, Shinya Watanabe, Naoaki Yabuuchi, and Shinichi Komaba 閉じる
ChemPhysChem 15 2145 - 51 2014年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Recent research progress on iron- and manganese-based positive electrode materials for rechargeable sodium batteries
Naoaki Yabuuchi and Shinichi Komaba
Science and Technology of Advanced Materials 15 043501 2014年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Sodium carboxymethyl cellulose as a potential binder for hard carbon negative electrodes in sodium-ion batteries
Mouad Dahbi, Takeshi Nakano, Naoaki Yabuuchi, Toru Ishikawa, Kei Kubota, Mika Fukunishi, Sota Shiba … 全著者表示
Mouad Dahbi, Takeshi Nakano, Naoaki Yabuuchi, Toru Ishikawa, Kei Kubota, Mika Fukunishi, Sota Shibahara, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, and Shinichi Komaba 閉じる
Electrochemistry Communications 44 66 - 69 2014年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Layered Oxides as Positive Electrode Materials for Na-Ion Batteries
Kei Kubota, Naoaki Yabuuchi, Hiroaki Yoshida, Mouad Dahbi, and Shinichi Komaba
MRS Bulletin 39 412 - 422 2014年5月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
P2-type Na2/3Ni1/3Mn2/3-xTixO2 as a new positive electrode for higher energy Na-ion batteries
Hiroaki Yoshida, Naoaki Yabuuchi, Kei Kubota, Issei Ikeuchi, Arnd Garsuch, Martin Schulz-Dobrick, a … 全著者表示
Hiroaki Yoshida, Naoaki Yabuuchi, Kei Kubota, Issei Ikeuchi, Arnd Garsuch, Martin Schulz-Dobrick, and Shinichi Komaba 閉じる
Chemical Communications 50 3677 - 3680 2014年4月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Phosphorus Electrodes in Sodium Cells: Small Volume Expansion by Sodiation and the Surface-Stabilization Mechanism in Aprotic Solvent
Naoaki Yabuuchi, Yuta Matsuura, Toru Ishikawa, Satoru Kuze, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, … 全著者表示
Naoaki Yabuuchi, Yuta Matsuura, Toru Ishikawa, Satoru Kuze, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji, Shinichi Komaba 閉じる
ChemElectroChem 1 580 - 589 2014年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Electrolyte Additives of Phosphate, Carbonate, and Borate to Improve Redox Capacitor Performance of Manganese Oxide Electrodes
Shinichi Komaba, Tomoya Tsuchikawa, Masataka Tomita, Naoaki Yabuuchi, and Atsushi Ogata
Journal of The Electrochemical Society 160 A1952 - A1961 2013年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Efficient Electrolyte Additives of Phosphate, Carbonate, and Borate to Improve Redox Capacitor Performance of Manganese Oxide Electrodes
Hiroaki Yoshida, Naoaki Yabuuchi, Shinichi Komaba
Electrochemistry Communications 34 60 - 63 2013年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
A Comparative Study on LiCoO2 Polymorphs: Structural and Electrochemical Characterization of O2, O3, and O4-type Phases
Naoaki Yabuuchi, Yuta Kawamoto, Ryo Hara, Toru Ishigaki, Akinori Hoshikawa, Masao Yonemura, Takashi … 全著者表示
Naoaki Yabuuchi, Yuta Kawamoto, Ryo Hara, Toru Ishigaki, Akinori Hoshikawa, Masao Yonemura, Takashi Kamiyama, and Shinichi Komaba 閉じる
Inorganic Chemistry 52 9131 - 9142 2013年8月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
A layer-structured Na2CoP2O7 pyrophosphate cathode for sodium-ion batteries
Prabeer Barpanda, Jiechen Lu, Tian Ye, Masataka Kajiyama, Sai-Cheong Chung, Naoaki Yabuuchi, Shini … 全著者表示
Prabeer Barpanda, Jiechen Lu, Tian Ye, Masataka Kajiyama, Sai-Cheong Chung, Naoaki Yabuuchi, Shinichi Komaba, and Atsuo Yamada 閉じる
RSC Advances 3 3957 - 3860 2013年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Synthesis and Electrode Performance of O3-Type NaFeO2-NaNi1/2Mn1/2O2 Solid Solution for Rechargeable Sodium Batteries
Naoaki Yabuuchi, Masaya Yano, Hiroaki Yoshida, Satoru Kuze, and Shinichi Komaba
Journal of The Electrochemical Society 2013年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
NMR study for electrochemically inserted Na in hard carbon electrode of sodium ion battery
Kazuma Gotoh, Toru Ishikawa, Saori Shimadzu, Naoaki Yabuuchi, Shinichi Komaba, Kazuyuki Takeda, Ats … 全著者表示
Kazuma Gotoh, Toru Ishikawa, Saori Shimadzu, Naoaki Yabuuchi, Shinichi Komaba, Kazuyuki Takeda, Atsushi Goto, Kenzo Deguchi, Shinobu Ohki, Kenjiro Hashi, Tadashi Shimizu, Hiroyuki Ishida 閉じる
Journal of Power Sources 225 137 - 140 2013年3月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Cross-Linked Poly(acrylic acid) with Polycarbodiimide as Advanced Binder for Si/Graphite Composite Negative Electrodes in Li-Ion Batteries
Zhen-Ji Han, Naoaki Yabuuchi, Shota Hashimoto, Takeo Sasaki, and Shinichi Komaba
ECS Electrochemistry Letters 2 A17 - A20 2013年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Structural and Electrochemical Characterizations on Li2MnO3-LiCoO2-LiCrO2 System as Positive Electrode Materials for Rechargeable Lithium Batteries
Naoaki Yabuuchi, Kazuyo Yamamoto, Kazuhiro Yoshii, Izumi Nakai, Takeshi Nishizawa, Atsuo Omaru, Tak … 全著者表示
Naoaki Yabuuchi, Kazuyo Yamamoto, Kazuhiro Yoshii, Izumi Nakai, Takeshi Nishizawa, Atsuo Omaru, Takehiro Toyooka, and Shinichi Komaba 閉じる
Journal of The Electrochemical Society 160 A39 - A45 2013年1月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Crop-Derived Polysaccharides as Binders for High-Capacity Silicon/Graphite-Based Electrodes in Lithium-Ion Batteries
Masahiro Murase, Naoaki Yabuuchi, Zhen-Ji Han, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji and Shinichi … 全著者表示
Masahiro Murase, Naoaki Yabuuchi, Zhen-Ji Han, Jin-Young Son, Yi-Tao Cui, Hiroshi Oji and Shinichi Komaba 閉じる
ChemSusChem 5 2307 - 2311 2012年12月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Electrochemical behavior and structural change of spinel-type Li[LixMn2-x]O4 (x = 0 and 0.2) in sodium ells
Naoaki Yabuuchi, Masaya Yano, Satoru Kuze, and Shinichi Komaba
Electrochimica Acta 82 296 - 301 2012年11月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries
Naoaki Yabuuchi, Hiroaki Yoshida, and Shinichi Komaba
Electrochemistry 80 716 - 719 2012年10月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
High-capacity Si-graphite composite electrodes with a self-formed porous structure by a partially neutralized polyacrylate for Li-ion batteries
Zhen-Ji Han, Naoaki Yabuuchi, Keiji Shimomura, Masahiro Murase, Hiroharu Yui, Shinichi Komaba
Energy & Environmental Science 5 9014 - 9020 2012年9月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Redox reaction of Sn-polyacrylate electrodes in aprotic Na cell
Shinichi Komaba, Yuta Matsuura, Toru Ishikawa, Naoaki Yabuuchi, Wataru Murata, and Satoru Kuze
Electrochemistry Communications 21 65 - 68 2012年7月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
P2-Nax[Fe1/2Mn1/2]O2 made from earth-abundant elements for rechargeable Na batteries
Naoaki Yabuuchi, Masataka Kajiyama, Junichi Iwatate, Heisuke Nishikawa, Shuji Hitomi, Ryoichi Okuya … 全著者表示
Naoaki Yabuuchi, Masataka Kajiyama, Junichi Iwatate, Heisuke Nishikawa, Shuji Hitomi, Ryoichi Okuyama, Ryo Usui, Yasuhiro Yamada, and Shinichi Komaba 閉じる
Nature Materials 11 512 - 517 2012年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著
-
Study on the Reversible Electrode Reaction of Na1-xNi0.5Mn0.5O2 for a Rechargeable Sodium-Ion Battery
Shinichi Komaba, Naoaki Yabuuchi, Tetsuri Nakayama, Atsushi Ogata, Toru Ishikawa, and Izumi Nakai
Inorganic Chemistry 51 6211 - 6220 2012年6月 [査読有り]
記述言語：英語 掲載種別：研究論文（学術雑誌） 共著