TATARA Ryoichi

Affiliation

Faculty of Engineering, Division of Materials Science and Chemical Engineering

Job Title

Associate Professor

Date of Birth

1990

Research Fields, Keywords

電気化学, 蓄電池, 電解質溶液

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0002-8148-5294

写真a

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Education 【 display / non-display 】

  • 2014.4
    -
    2017.3

    Yokohama National University   Department of Materials Science and Engineering   Doctor Course   Completed

  • 2012.4
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    2014.3

    Yokohama National University   Department of Materials Science and Engineering   Master Course   Completed

  • 2008.4
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    2012.3

    Yokohama National University   Graduated

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Degree 【 display / non-display 】

  • 博士（工学） - 横浜国立大学

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Campus Career 【 display / non-display 】

  • 2024.4
    　
    　

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Associate Professor  

  • 2019.5
    -
    2020.3

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Specially Appointed Assistant Professor  

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External Career 【 display / non-display 】

  • 2023.4
    -
    2024.3

    Tokyo University of Science   Department of Applied Chemistry   Lecturer  

  • 2020.4
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    2023.3

    Tokyo University of Science   Department of Applied Chemistry   Assistant Professor  

  • 2017.5
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    2019.4

    Massachusetts Institute of Technology   Reserach Laboratory of Electronics   Researcher  

  • 2015.9
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    2016.2

    Massachusetts Institute of Technology   Reserach Laboratory of Electronics   Visiting Student  

  • 2014.4
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    2017.3

    Japan Society for the Promotion of Science   Special researcher of the Japan Society for the Promotion of Science  

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Academic Society Affiliations 【 display / non-display 】

  • 2012
    　
    　
     

    電気化学会

  • 2018
    　
    　
     

    アメリカ電気化学会(The Electrochemical Society)

  • 2020
    　
    　
     

    日本化学会

  • 2021
    　
    　
     

    米国化学会(ACS)

  • 2012
    　
    　
     

    高分子学会

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Research Areas 【 display / non-display 】

  • Nanotechnology/Materials / Energy chemistry

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Qualification acquired 【 display / non-display 】

  • Hazardous Material Handler (first kind)

  • Person in Charge of High-pressure Gas Production Security (chemical machinery and frozen machine)

  • First Kind of High School Teacher License

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Books 【 display / non-display 】

  • CSJ Current Review 44 モビリティ用電池の化学 リチウムイオン二次電池から燃料電池まで

    吉野 彰、射場 英紀、秦野 正治、内田 裕之、今西 誠之、安部 武志、金村 聖志、内田 裕之、多々良 涼一、駒場 慎一、荒井 創、池澤 篤憲、林 晃敏、作田 敦、辰巳砂昌弘、獨古 薫、藪内 直明、 藤本 宏之、道見 康弘、薄井 洋行、坂口 裕樹、森田 昌行、鈴木 耕太、平山 雅章、菅野 了次、井上 博史、兒玉 健作、田中 慎太郎、佐野 誠治、内田 裕之、石原 顕光、難波江 裕太、大間 敦史、 平居 丈嗣、陸川 政弘、宮武 健治、三宅 純平、 岩澤 康裕、鷹尾 忍（ Role： Joint author ,  PartII研究最前線 ①二次電池 1章「NaとK二次電池」）

    化学同人  （ ISBN:9784759814040 ）

    Amazon

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    Responsible for pages：38-44   Language：Japanese Book type：Scholarly book

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Thesis for a degree 【 display / non-display 】

  • Fundamental Properties and Unique Electrode Reactions in Concentrated Electrolytes for Rechargeable Lithium Batteries

    Ryoichi Tatara

    2017.3

    Doctoral Thesis   Single Work  

    DOI

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Papers 【 display / non-display 】

  • Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries

    Moriya, K; Kumakura, S; Kim, EJ; Tatara, R; Komaba, S

    ELECTROCHEMISTRY COMMUNICATIONS   174   2025.5  [Reviewed]

    DOI Web of Science

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

  • All-Solid-State Ion-Selective Electrode Inspired from All-Solid-State Li-Ion Batteries

    Tatara, R; Shibasaki, Y; Igarashi, D; Osada, H; Aoki, K; Miyamoto, Y; Takayama, T; Matsui, T; Komab … Show more authors

    ANALYTICAL CHEMISTRY   97 ( 9 )   4819 - 4823   2025.2  [Reviewed]

    DOI Web of Science PubMed

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

    Other Link： https://pubs.acs.org/doi/10.1021/acs.analchem.4c06470

  • Development of Lithium Ion Conducting Liquid: Methylurea-Based Eutectic Electrolytes for Lithium Batteries

    ITO Nanako, HOSAKA Tomooki, TATARA Ryoichi, GOSSAGE Zachary T., KOMABA Shinichi

    Electrochemistry   93 ( 2 )   027018 - 027018   2025.2  [Reviewed]

    DOI Web of Science CiNii Research

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：公益社団法人　電気化学会   Joint Work  

    <p>Deep eutectic electrolytes (DEEs) are attracting increasing attention as liquid-state electrolytes for secondary batteries because they are potentially low cost, display low flammability, and are environmentally friendly. However, to date limited DEEs have been developed and explored for lithium-ion battery (LIB) applications, with most reports showing unsatisfactory capacity retention, a narrow potential window for battery operation, and an unstable solid electrolyte interphase (SEI) layer leading. Herein, we develop DEEs based on lithium bis(fluorosulfonyl)amide, LiFSA, and a series of urea derivatives as Li ion-conducting DEEs. Despite similar structures for the urea derivatives, i.e. methylated urea, we found that 1,3-dimethylurea (1,3-DMU) could form Li ion-concentrated DEEs across a wide range of LiFSA : 1,3-DMU ratio, while the LiFSA : urea DEE was liquid only in a limited range of molar ratios, i.e. LiFSA : urea close to 1 : 4 (mol/mol). By examining the electrolyte structure via Raman spectroscopy, we observed increased aggregation for DEE with higher LiFSA concentrations. We further confirmed non-flammability and electrochemical stability among the DEEs with potential windows ranging from ∼3.35 V for LiFSA : urea (1 : 4) to an impressive 6.42 V for LiFSA : 1,3-DMU (1 : 2) at a Pt foil electrode. During charge-discharge of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO) electrodes, we observed good capacities and retention for the LiFSA : urea (1 : 4) and LiFSA : 1,3-DMU (1 : 2) DEEs. High Coulombic efficiencies (CEs) were achieved in the LiFSA : 1,3-DMU (1 : 2) DEE with its high LiFSA content that led to more substantial FSA-derived components in the SEI structures after cycling. We further tested positive electrode materials, including LiFePO<sub>4</sub> that showed excellent capacity retention and CEs near 100 % across 50 cycles. In all, we find that the dimethylurea-based DEEs show an opportunity for non-flammable and high-voltage Li batteries.</p>

  • Stability of RbO2 as a Discharge Product of Metal-O2 Batteries

    Fujimoto, R; Tatara, R; Hosaka, T; Igarashi, D; Komaba, S

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   2025.2  [Reviewed]

    DOI Web of Science PubMed

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

    Other Link： https://pubs.acs.org/doi/10.1021/jacs.4c16383

  • Effect of Ligand Structure on Li-Ion Insertion Kinetics in Ether-Based Solvate Ionic Liquids

    Zhou, Z; Takeshita, K; Ishikawa, R; Ugata, Y; Tsuzuki, S; Tatara, R; Dokko, K

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   172 ( 2 )   2025.2  [Reviewed]

    DOI Web of Science

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

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Review Papers 【 display / non-display 】

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Industrial Property Rights 【 display / non-display 】

  • ALL-SOLID-STATE POTASSIUM ION SELECTIVE ELECTRODE, AND METHOD FOR PRODUCING SAME

    高山 利治、松井 貴弘、武居 祐子、青木 一真、駒場 慎一、多々良 涼一、石原 研太

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    Applicant：KOA株式会社、学校法人東京理科大学

    Application no：PCT/JP2023/024062  Date applied：2023.6.28

    Announcement no：WO/2024/042854  Date announced：2024.2.29

  • ALL-SOLID-STATE POTASSIUM ION SELECTIVE ELECTRODE

    高山 利治、松井 貴弘、武居 祐子、青木 一真、駒場 慎一、多々良 涼一、石原 研太

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    Applicant：KOA株式会社、学校法人東京理科大学

    Application no：PCT/JP2023/024063  Date applied：2023.6.28

    Announcement no：WO/2024/042855  Date announced：2024.2.29

  • 非水系アルカリ金属蓄電素子用正極前駆体

    梅津和照, 岡田宣宏, 駒場慎一, 多々良涼一, 保坂知宙

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    Applicant：旭化成株式会社、学校法人東京理科大学

    Application no：特願2022-210084  Date applied：2022.12.27

    Publication no：特開2024-093592  Date published：2024.7.9

  • POTASSIUM-ION BATTERY ELECTROLYTIC SOLUTION ADDITIVE, POTASSIUM-ION BATTERY ELECTROLYTIC SOLUTION, POTASSIUM-ION BATTERY, POTASSIUM-ION CAPACITOR ELECTROLYTIC SOLUTION ADDITIVE, POTASSIUM-ION CAPACITOR ELECTROLYTIC SOLUTION, POTASSIUM-ION CAPACITOR, AND NEGATIVE ELECTRODE

    駒場 慎一、久保田 圭、多々良 涼一、保坂 知宙、松山 達央

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    Applicant：学校法人東京理科大学

    Application no：PCT/JP2022/039411  Date applied：2022.10.21

    Announcement no：WO/2023/074592  Date announced：2023.5.4

  • 全固体型カリウムイオン選択性電極

    高山 利治、松井 貴弘、武居 祐子、青木 一真、駒場 慎一、多々良 涼一、石原 研太

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    Applicant：KOA株式会社、学校法人東京理科大学

    Application no：特願2022-134341  Date applied：2022.8.25

    Announcement no：特開2024-031047  Date announced：2024.3.7

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Awards 【 display / non-display 】

  • 電気化学会 進歩賞（佐野賞）

    2024.3   電気化学会   次世代蓄電池を指向した濃厚電解液及び電極界面設計に関する研究

    Individual or group name of awards：多々良 涼一

  • エヌエフ基金研究開発奨励賞 選考委員会特別賞

    2020.11   エヌエフ基金   リチウムイオン電池用多孔質複合電極の電気化学インピーダンス解析

    Individual or group name of awards：多々良 涼一

  • Third Place Poster Award

    2023.3   International Battery Materials Association   All-Solid-State Sodium and Potassium Polymer Batteries

    Individual or group name of awards：Ryoichi Tatara

  • 1st Prize Poster Award

    2012.8   13th International Symposium on Polymer Electrolytes   Polymer Electrolytes of Protic Ionic Liquid for Non-humidified Fuel Cell Applications

    Individual or group name of awards：Ryoichi Tatara, Yoshiyuki Honda, Shin-ichiro Nakamura, Kei Kinugawa, Tomohiro Yasuda, Kaoru Dokko, Masayoshi Watanabe

  • 2nd Prize Poster Presentation Award

    2013.11   7th Asian Conference on Electrochemical Power Sources   Solvate Ionic Liquids as Electrolyte for Rechargeable Li-air Battery

    Individual or group name of awards：Ryoichi Tatara, Hoi-min, Kwon, Kazuhide Ueno, Naoki Tachikawa, Kaoru Dokko, Masayoshi Watanabe

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Grant-in-Aid for Scientific Research 【 display / non-display 】

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Other external funds procured 【 display / non-display 】

  • アルカリ金属イオンを俯瞰する未踏電極反応開拓と蓄電応用

    Grant number：JPMJPR2374  2023.10 - 2027.3

    Japan Science and Technology Agency  戦略的創造研究推進事業「さきがけ」

    Investigator(s)：多々良 涼一

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    Authorship：Principal investigator 

  • ナトリウムイオン電池の大容量化に資する新奇材料開発

    Grant number：21502018-0  2022.3 - 2023.3

    官民による若手研究者発掘支援事業(若サポ)　マッチングサポートフェーズ

    Investigator(s)：多々良 涼一

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    Authorship：Principal investigator 

  • リチウム／ナトリウム／カリウムイオン電池の高性能化に資する材料検討

    Grant number：23200051-0  2023.4 - 2024.3

    官民による若手研究者発掘支援事業(若サポ)　共同研究フェーズ

    Investigator(s)：多々良 涼一

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    Authorship：Principal investigator 

  • 同位体標識質量分析法を用いた次世代蓄電池の劣化機構解明

    Grant number：2407  2024.9 - 2026.8

    Private Foundations  日揮・実吉奨学会 2024年度研究助成

    Investigator(s)：多々良 涼一

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    Authorship：Principal investigator 

  • 交流インピーダンス法を用いた高容量蓄電池の精密評価

    2023.4 - 2026.3

    Private Foundations  高橋産業経済研究財団　研究助成

    Investigator(s)：多々良 涼一

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    Authorship：Principal investigator 

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Presentations 【 display / non-display 】

  • Concentrated Electrolytes for Li Batteries: Physicochemical Properties and Electrochemical Reaction at Graphite Electrode

    Ryoichi Tatara, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe  [Invited]

    44th International Conference and Expo on Advanced Ceramics and Composites (ICACC 2020)  ACerS Engineering Ceramics Division

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    Event date： 2020.1

    Language：English   Presentation type：Oral presentation (invited, special)  

    Venue：Daytona Beach, FL, USA  

  • イオン液体中の溶媒活量がリチウム電池系の電極反応電位に与える影響

    多々良涼一, 上野和英, 獨古薫, 渡邉正義

    第10回 イオン液体討論会  イオン液体研究会

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    Event date： 2019.11

    Language：Japanese   Presentation type：Poster presentation  

    Venue：大阪大学 豊中キャンパス  

  • Towards Stabilizing Positive Electrodes in Li-ion and Li-O2 Batteries

    R. Tatara, G. M. Leverick, Y. Shao-Horn

    The 19th International Meeting on Lithium Batteries (IMLB2018) 

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    Event date： 2018.6

    Language：English   Presentation type：Poster presentation  

    Venue：Kyoto, Japan  

  • リチウム塩濃厚電解液中における溶媒活量とグラファイト負極反応メカニズム

    多々良涼一, 張旌君, 渡辺健太, 寺田尚志, 松前義治, 獨古薫, 渡邉正義

    第57回電池討論会 

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    Event date： 2016.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：幕張メッセ  

  • Study of the effect of electrolyte concentration on Li-air battery performance

    Pacific Rim Meeting on Electrochemical and Solid-state Science 2016 

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    Event date： 2016.10

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Hawaii, USA  

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Charge of on-campus class subject 【 display / non-display 】

  • 2025   Electrochemsitry B

    College of Engineering Science

  • 2025   Chemistry of Electron Transfer Reactions

    Graduate school of Engineering Science

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Committee Memberships 【 display / non-display 】

  • 電気化学会関東支部幹事会

    2021.4  幹事

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    Committee type：Academic society 

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Academic Activities 【 display / non-display 】

  • 2024 Top ECS Reviewers

    Role(s)： Peer review

    The Electrochemical Society  2024.9

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    Type：Peer review 

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