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Affiliation |
Faculty of Engineering, Division of Materials Science and Chemical Engineering |
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Job Title |
Professor |
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Research Fields, Keywords |
エネルギー, 固体化学, 電池 |
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Mail Address |
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Related SDGs |
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YABUUCHI Naoaki
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Degree 【 display / non-display 】
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Doctor of Engineering - Osaka City University
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Master of Engineering - Osaka City University
Campus Career 【 display / non-display 】
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2018.4
Duty Yokohama National UniversityFaculty of Engineering Division of Materials Science and Chemical Engineering Professor
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2023.4
Concurrently Yokohama National UniversityInstitute for Multidisciplinary Sciences Professor
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2020.10
Concurrently Yokohama National UniversityInstitute of Advanced Sciences Professor
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2018.4
Concurrently Yokohama National UniversityGraduate School of Engineering Department of Materials Science and Engineering Professor
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2018.4
Concurrently Yokohama National UniversityCollege of Engineering Science Department of Chemistry, Chemical Engineering and Life Science Professor
External Career 【 display / non-display 】
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2014.4-2018.3
Tokyo Denki University Associate Professor
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2011.4-2013.3
Tokyo University of Science Lecturer
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2010.4-2011.3
Tokyo University of Science Assistant Professor
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2006.10-2008.9
Massachusetts Institute of Technology Postdoctoral Associate
Books 【 display / non-display 】
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Interface ionics : for all-solid-state batteries and solid state ionics devices
Iriyama Yasutoshi, Amezawa Koji, Tateyama Yoshitaka, Yabuuchi Naoaki（ Role： Joint author）
Springer （ ISBN:9789819760381 ）
Language：English Book type：Scholarly book
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車載用リチウムイオン電池の開発と市場 2024
藪内直明（ Role： Joint author , 次世代リチウムイオン電池用正極材料開発）
シーエムシー出版 （ ISBN:978-4-7813-1755-7 ） [Reviewed]
Responsible for pages：10 Language：Japanese Book type：Scholarly book
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ポストリチウムイオン二次電池開発 部材開発から解析・性能診断技術まで
藪内 直明（ Role： Contributor , 「多電子反応を利用する高容量Li過剰型カチオン不規則配列岩塩型正極材料」）
エヌ・ティー・エス （ ISBN:978-4-86043-836-4 ）
Total pages：492 Responsible for pages：75-82 Language：Japanese Book type：Scholarly book
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次世代二次電池の開発動向
藪内 直明（ Role： Contributor , 第II編第1章「リチウム過剰型正極材料の研究開発」）
シーエムシー出版 （ ISBN:978-4-7813-1730-4 ）
Total pages：247 Responsible for pages：47-55 Language：Japanese Book type：Scholarly book
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科学
藪内直明（ Role： Joint author , 結晶構造とイオン拡散－電極材料および固体電解質材料）
岩波書店
Responsible for pages：6 Language：Japanese Book type：Scholarly book
Thesis for a degree 【 display / non-display 】
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Solid State Chemistry and Electrochemistry of LiCo1/3Ni1/3Mn1/3O2 for Advanced Lithium-Ion Batteries
2006.3
Doctoral Thesis Single Work
Papers 【 display / non-display 】
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Direct Visualization of Metastable Charged States in Positive Electrode Materials by Cryo-STEM
Fujimura, H; Ugata, Y; Xinrui, Z; Miyazaki, Y; Yabuuchi, N
ACS MATERIALS LETTERS 7 ( 10 ) 3420 - 3426 2025.10
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Meta-aramid resin as functional binder and its applications for bipolar-type aqueous batteries
Zafar, S; Furuhata, S; Ugata, Y; Komagata, T; Yabuuchi, N
MATERIALS TODAY ENERGY 52 2025.8
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Shinoda, M; Matsunoshita, K; Nakayama, M; Hiroi, S; Ohara, K; Abe, M; Ishiguro, N; Takahashi, Y; Ha … Show more authors
Shinoda, M; Matsunoshita, K; Nakayama, M; Hiroi, S; Ohara, K; Abe, M; Ishiguro, N; Takahashi, Y; Hasegawa, G; Kuwata, N; Iwama, T; Masuda, T; Suzuki, K; Ishii, H; Shao, YC; Shibata, D; Irizawa, A; Ohta, T; Konuma, I; Ohno, T; Ugata, Y; Yabuuchi, N Hide authors
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 147 ( 30 ) 26238 - 26253 2025.7
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Na-Ion Battery Anodes Based on Biphenyl Carboxylate Derivatives
Takahashi, K; Yabuuchi, N; Miyasaka, M
ACS APPLIED ENERGY MATERIALS 8 ( 15 ) 11141 - 11148 2025.7
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Shinoda Miyuki, Matsunoshita Koki, Nakayama Masanobu, Hiroi Satoshi, Ohara Koji, Abe Masaki, Ishigu … Show more authors
Shinoda Miyuki, Matsunoshita Koki, Nakayama Masanobu, Hiroi Satoshi, Ohara Koji, Abe Masaki, Ishiguro Nozomu, Takahashi Yukio, Hasegawa Gen, Kuwata Naoaki, Iwama Tsukasa, Masuda Takuya, Suzuki Kosuke, Ishii Hirofumi, Shao Yu-Cheng, Shibata Daisuke, Irizawa Akinori, Ohta Toshiaki, Konuma Itsuki, Ohno Teppei, Ugata Yosuke, Yabuuchi Naoaki Hide authors
Journal of the American Chemical Society 147 ( 30 ) 26238 - 26253 2025.7
Language：English Publishing type：Research paper (scientific journal) Publisher：American Chemical Society Joint Work
Extensive research efforts have been dedicated to Li-excess compounds with anionic redox reaction as potential high-capacity positive electrode materials for Li-ion battery applications. The origin of activation on anionic redox is still under debate, and a unified understanding is necessary, especially for sulfide-based compounds without conductive d electrons. Herein, joint experimental and theoretical study is conducted for Li-excess and stoichiometric compounds with different crystal structures, cation-disordered rocksalt, and cation-ordered layered structures. In contrast to the understanding of Li-excess oxides, sulfide-based compounds with ordered layered structures are electrochemically less active compared with the materials with disordered structure. Theoretical study reveals that a unique local structure for a sulfide ion coordinated by 6 Li ions, SLi6 configuration, is formed, which can be found only for the disordered structure and not for the layered structure. The unique local structure triggers electron delocalization for sulfide 3p orbitals, leading to superior electronic conductivity, as experimentally evidenced, and thus anionic redox is successfully activated. Furthermore, such nonuniform local structures lead to easier structural distortion and efficient S–S dimerization, and even trimerization (S32–), upon delithiation. Although sulfide-based compounds as battery electrode materials suffer from dissolution after oxidation, this practical problem is effectively mitigated by the use of highly concentrated electrolyte solutions with fewer free solvent molecules, leading to superior reversibility for anionic redox. The insights derived can guide the development of high-energy electrode materials with anionic redox with or without transition metal ions possessing conductive d electrons.
Review Papers 【 display / non-display 】
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Near-dimensionally invariable high-capacity positive electrode material
N. Yabuuchi, S. Hiroi, and K. Ohara
SPring-8/SACLA Research Frontiers 2023 2024.8 [Reviewed] [Invited]
Language：English Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Single Work
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コバルトフリーニッケル系正極材料の開発動向と高エネルギー密度化
藪内直明
車載テクロノジー 2024.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Single Work
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リチウム過剰型マンガン系酸フッ化物材料の開発とその電気化学特性
藪内直明
Material Stage 2024.6
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Single Work
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リチウムイオン電池の基本原理と火災リスク要因
藪内直明
火災 2023.10 [Reviewed] [Invited]
Language：English Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Single Work
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次世代リチウムイオン電池の安全性とエネルギー密度向上
宇賀田洋介、藪内直明
火災 2023.10 [Reviewed] [Invited]
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
Awards 【 display / non-display 】
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2025年電気化学会学術賞
2024.12 電気化学会
Individual or group name of awards：藪内直明
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Selected as a fellow of the Royal Society of Chemistry (from the Royal Society of Chemistry)
2023.6 the Royal Society of Chemistry
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令和5年度 科学技術分野の文部科学大臣表彰 科学技術賞 (研究部門)
2023.4 文部科学省 先駆的インサーション材料開発と蓄電池への応用に関する研究
Individual or group name of awards：藪内直明
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Featured in the List of 2020 ANNUAL MOST CITED PAPERS, Ranked 1st, Electrochemistry
2021.2 THE ELECTROCHEMICAL SOCIETY OF JAPAN Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries
Individual or group name of awards：Naoaki YABUUCHI, Hiroaki YOSHIDA, Shinichi KOMABA
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Featured in the List of CONTINUOUSLY HIGHLY CITED PAPERS, Ranked 5th, Electrochemistry
2021.2 THE ELECTROCHEMICAL SOCIETY OF JAPAN Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries
Individual or group name of awards：Naoaki YABUUCHI, Hiroaki YOSHIDA, Shinichi KOMABA
Grant-in-Aid for Scientific Research 【 display / non-display 】
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チオン・アニオン配列低秩序化の特異性を利用した蓄電池材料の革新
Grant number：23K17954 2023.6 - 2025.3
Grant-in-Aid for Challenging Research (Exploratory)
Authorship：Principal investigator Grant type：Competitive
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格子の膨張収縮を生じない高濃度電荷蓄積を実現する高耐久性電極材料の創製
Grant number：21K18815 2021.7 - 2023.3
Grant-in-Aid for Challenging Research (Exploratory)
Authorship：Principal investigator Grant type：Competitive
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アニオンレドックスの可逆性を支配する原理解明と革新的蓄電池材料設計への応用
Grant number：21H04698 2021.4 - 2027.3
科学研究費補助金 Grant-in-Aid for Scientific Research(A)
Investigator(s)：藪内直明
Grant type：Competitive
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蓄電固体界面の機能開拓と界面新材料開発
Grant number：19H05816 2019.6 - 2024.3
科学研究費補助金 Grant-in-Aid for Scientific Research on Innovative Areas
Investigator(s)：藪内直明
Grant type：Competitive
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蓄電固体デバイスの創成に向けた界面イオンダイナミクスの科学
Grant number：19H05812 2019.6 - 2024.3
科学研究費補助金 Grant-in-Aid for Scientific Research on Innovative Areas
Investigator(s)：入山恭寿
Grant type：Competitive
Other external funds procured 【 display / non-display 】
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ASPIRE 先端国際共同研究推進事業
2024.2 - 2029.3
Japan Science and Technology Agency
Authorship：Coinvestigator(s)
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GteX（革新的GX技術創出事業）
2023.10 - 2028.3
Japan Science and Technology Agency
Authorship：Coinvestigator(s)
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次世代全固体蓄電池材料の評価・基盤技術開発／次世代全固体ＬＩＢ基盤技術開発
2023.4 - 2028.3
Ministry of Economy, Trade and Industry
Authorship：Coinvestigator(s)
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水を基軸とする未踏蓄電機能材料の開拓
Grant number：JPMJCR21O6 2021.10 - 2026.3
Japan Science and Technology Agency CREST
Authorship：Coinvestigator(s)
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再生可能エネルギー最大導入に向けた電気化学材料研究拠点
2021.4 - 2026.3
Ministry of Education, Culture, Sports, Science and Technology
Authorship：Coinvestigator(s)
Presentations 【 display / non-display 】
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Toward high-energy lithium/sodium metal batteries with highly concentrated electrolytes
Y. Ugata and N. Yabuuchi [Invited]
49th International Conference and Exposition on Advanced Ceramics and Composites
Event date： 2025.1
Language：English Presentation type：Oral presentation (invited, special)
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Nanostructured high-capacity positive electrode materials for practical Li-ion battery applications
Naoaki Yabuuchi
The 1st Japan-Korea-China Battery Science Workshop
Event date： 2025.1
Language：English Presentation type：Oral presentation (invited, special)
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Defect Engineered High-energy Insertion Materials for Advanced Li-ion Batteries
Naoaki Yabuuchi [Invited]
POSTECH Signature Conference 2024
Event date： 2024.11
Language：English Presentation type：Oral presentation (keynote)
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Nanostructured Positive Electrode Materials for Li-Ion Battery Applications
Naoaki Yabuuchi [Invited]
PRiME 2024
Event date： 2024.10
Language：English Presentation type：Oral presentation (invited, special)
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Nanostructured Lithium Insertion Materials for Practical Battery Applications
Naoaki Yabuuchi [Invited]
International Battery Materials Association (IBA) 2024
Event date： 2024.9
Language：English Presentation type：Oral presentation (keynote)
Past of Collaboration and Commissioned Research 【 display / non-display 】
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Panasonic
Funded Research offered by Enterprises
Project Year： 2021.9 - 2022.3
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LG Japan
Funded Research offered by Enterprises
Project Year： 2021.8 - 2022.7
Charge of on-campus class subject 【 display / non-display 】
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2025 Introduction to Solid State Physics
College of Engineering Science
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2025 Chemistry, Chemical Engineering and Life Science: Exercise A
College of Engineering Science
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2025 Chemistry, Chemical Engineering and Life Science: Exercise B
College of Engineering Science
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2025 Inorganic Chemistry 1
College of Engineering Science
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2025 Energy Storage Engineering
College of Engineering Science
Committee Memberships 【 display / non-display 】
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JST 日 ASEAN 科学技術・イノベーション協働連携事業審査委員
2024.4 - 2025.3 アドバイザー
Committee type：Academic society
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ICACC 2025
2024.4 - 2025.1 Symposium Organizer, S6: Advanced Materials and Technologies for Rechargeable Energy Storage
Committee type：Academic society
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14th International Conference on Ceramic Materials and Components for Energy and Environmental Systems (CMCEE14)
2024.1 - 2024.8 Symposium Organizer, T1.6 Advanced Batteries and Supercapacitors for Energy Storage Applications
Committee type：Academic society
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PRiME 2024 Meeting
2023.11 - 2024.10 Organizing Committee
Committee type：Academic society
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総務省消防庁 「リチウムイオン蓄電池に係る危険物規制に関する検討会」
2023.4 - 2024.3 委員
Committee type：Other
Social Contribution(Extension lecture) 【 display / non-display 】
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電気化学会 セミナーD “最先端電池技術 2024
Role(s)： Lecturer, Logistic support
2024.2
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第63回 電気化学セミナー “蓄電池の未来 ー学術・技術・人材育成の展望ー
Role(s)： Lecturer
2023.10
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構造物性研究会・コヒーレント構造科学研究会 合同研究会
Role(s)： Lecturer
2023.9
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Interface Ionics for All-Solid-State Batteries
Role(s)： Lecturer
Interface Ionics for All-Solid-State Batteries 2023.6
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2022年度立命館大学SRセンター –研究成果報告会–
Role(s)： Lecturer
2023.6
Media Coverage 【 display / non-display 】
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Cobalt-free electrodes achieved with nickel ions
2024.3
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高エネ密度でコバルトフリーのニッケル系電池材料＝横浜国大など
MIT Technology Review Japan 2024.2
Author：Other
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高エネ密度・長寿命のコバルトニッケルフリー電池材料
MIT Technology Review Japan 2023.7
Author：Other
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全固体電池、トヨタと共同研究の横浜国立大学教授に聞く
日経新聞社 2023.7
Author：Other