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Development of high capacity and durable electrode materials with less strain on electrochemical cycling

Research Project

Project/Area Number 21K18815
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionYokohama National University

Principal Investigator

Yabuuchi Naoaki  横浜国立大学, 大学院工学研究院, 教授 (80529488)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords蓄電池 / 相変化 / 格子膨張
Outline of Research at the Start

現在、イオンと電子の混合伝導体である、リチウムインサーション材料において高密度電荷蓄積と体積変化抑制を両立するための学術的方法論は存在していない。本研究課題により、高容量・体積変化の抑制を実現するための方法論を確立する。このような体積変化の抑制は次世代の Li イオン蓄電池として期待されている固体電池用電極材料で必要とされている特性でもある。無体積変化のインサーション材料と固体電解質を用いて全固体デバイスの誕生に繋がることも期待でき、将来的には従来の電池材料構成では実現不可能な 20 年といった長寿命セラミックス電池の創製を目指した研究を実施する。

Outline of Final Research Achievements

In this study, the factors affecting lattice volume changes on lithium extraction/insertion are systematically studied. This study possibly contributes the development of durable insertion materials without deterioration of electrode performance. Layered materials show non-isotropic volume change on delithiation, but isotropic volume change is expected for materials with a disordered rocksalt structure. To stabilize the disordered rocksalt structure, Nb5+ and Ti4+ ions are used host structure coupled with different transition metal ions, V and Co ions. By comparing the reaction mechanisms of these electrode materials, the migration of transition metal ions is found to be an important parameter, which influences the volume change on electrochemical cycles. This finding contributes the further development of lithium insertion materials with excellent durability in the future.

Academic Significance and Societal Importance of the Research Achievements

本研究成果はインサーション材料の膨張・収縮を制御するための学術的方法論の確立を行った。これらの知見は次世代の長寿命蓄電池用材料開発の実現に繋がることが期待できる。これらの技術を活用することで、将来における脱炭素社会実現を目指す上で非常に重要な技術となる次世代高性能蓄電池の実現に繋がることが期待できる。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] Partially Reversible Anionic Redox for Lithium-Excess Cobalt Oxides with Cation-Disordered Rocksalt Structure2023

    • Author(s)
      Zhang Yanjia、Sawamura Miho、Harada Maho、Noda Yusuke、Nakayama Masanobu、Goto Masato、Kan Daisuke、Shimakawa Yuichi、Louis Camp?on Beno?t Denis、Shibata Daisuke、Ohta Toshiaki、Yabuuchi Naoaki
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 127 Issue: 5 Pages: 2194-2203

    • DOI

      10.1021/acs.jpcc.2c08005

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improved electrode reversibility of anionic redox with highly concentrated electrolyte solution and aramid-coated polyolefin separator2023

    • Author(s)
      Shimada Nanaka、Ugata Yosuke、Nishikawa Satoshi、Shibata Daisuke、Ohta Toshiaki、Yabuuchi Naoaki
    • Journal Title

      Energy Advances

      Volume: 2 Issue: 4 Pages: 508-512

    • DOI

      10.1039/d3ya00066d

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metastable and Nanosized Li<sub>1.2</sub>Nb<sub>0.2</sub>V<sub>0.6</sub>O<sub>2</sub> for High-Energy Li-ion Batteries2022

    • Author(s)
      QI Ruijie、CAMPEON Benoit D. L.、KONUMA Itsuki、SATO Yoshihiko、KANEDA Yuko、KONDO Masashi、YABUUCHI Naoaki
    • Journal Title

      Electrochemistry

      Volume: 90 Issue: 3 Pages: 037005-037005

    • DOI

      10.5796/electrochemistry.22-00005

    • NAID

      130008145624

    • ISSN
      1344-3542, 2186-2451
    • Year and Date
      2022-03-16
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rocksalt and Layered Metal Sulfides for Li Storage Applications: LiMe0.5Ti0.5S2 (Me = Fe2+, Mn2, and Mg2+)2022

    • Author(s)
      Shinoda Miyuki、Rajendra Hongahally Basappa、Yabuuchi Naoaki
    • Journal Title

      ACS Applied Energy Materials

      Volume: 5 Issue: 3 Pages: 2642-2646

    • DOI

      10.1021/acsaem.1c04044

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Cation Disordered Rocksalt Electrode Materials for Li-ion Battery Applications2022

    • Author(s)
      Naoaki Yabuuchi
    • Organizer
      The 7th International Conference on Electronic Materials and Nanotechnology for Green Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Li-excess High-capacity Electrode Materials with Cation Disordered Rocksalt Structures2022

    • Author(s)
      Naoaki Yabuuchi
    • Organizer
      Asian Conference on Electrochemical Power Sources 11
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Metastable and Nanosized Materials for High-Capacity Positive Electrode Materials2021

    • Author(s)
      Naoaki Yabuuchi
    • Organizer
      6th International Conference on Advanced Eelectromaterials
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Materials design of Li-excess rocksalt oxides for Li storage applications2021

    • Author(s)
      Naoaki Yabuuchi
    • Organizer
      IBA 2021 Annual Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-07-13   Modified: 2024-01-30  

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