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Study on Electrode Kinetics of Lithium Insertion Electrodes

Research Project

Project/Area Number 20K05687
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionOsaka Metropolitan University (2022-2023)
Osaka City University (2020-2021)

Principal Investigator

Ariyoshi Kingo  大阪公立大学, 大学院工学研究科, 准教授 (80381979)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsリチウムイオン電池 / 電極反応速度論 / リチウムインサーション電極 / 固相拡散 / 電荷移動抵抗 / 接触抵抗
Outline of Research at the Start

本研究では、リチウムインサーション材料の反応速度を測定しうる電気化学手法の開発ならびに様々な材料の反応速度の測定から反応速度論を確立することを最終的な目標とする。具体的には、材料の本質的な反応速度が測定可能な「希薄電極法」を適用し、リチウムインサーション材料の反応速度を明らかにするとともに、種々の材料における反応速度を比較・検討することで反応速度論の確立を目指す。

Outline of Final Research Achievements

In this research, we quantitatively evaluate the reaction rate of lithium insertion materials by applying the dilute electrode method, and also compare the reaction rates of materials with different reaction mechanisms, particle sizes, and crystal structures. The purpose of this study was to clarify the influencing factors.
We have demonstrated that the rate of solid-state Li-ion transportation can be measured using the dilute electrode method. We also succeeded in evaluating the charge transfer resistance of the active material, and found that the charge transfer resistance depends only on the surface area of the active material particles.
Furthermore, we found that rate of solid-state Li-ion transportation is greatly influenced by particle size and reaction mechanism, and also found that the reaction rates are asymmetric between oxidation and reduction reactions.

Academic Significance and Societal Importance of the Research Achievements

本研究では希薄電極法を用いることで、固体内におけるリチウムイオンの移動速度について定量的に評価することが可能になったことで、リチウムインサーション反応の律速過程を特定できるようになるとともに、その速度論的パラメーターを用いることで種々のリチウムインサーション材料の反応速度について、定量的な比較を可能にするという点で学術的に意義がある。また反応機構と反応速度との関係を見出いしたことは、従来では電池材料の高出力化を達成するには「粒子サイズ制御」もしくは「物性制御」という工学的手法に限られていたものが、新たに「反応機構制御」によっても高出力化が可能であることを明らかにした点で、工学的に重要である。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2024 2023 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (2 results)

  • [Journal Article] Chronoamperometric analyses of lithium insertion/extraction kinetics of lithium nickel manganese oxide using the diluted electrode method2024

    • Author(s)
      Ariyoshi Kingo、Hiroshima Shinya
    • Journal Title

      Electrochimica Acta

      Volume: 487 Pages: 144192-144192

    • DOI

      10.1016/j.electacta.2024.144192

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improving the rate capability of LiNi0.5Mn1.3Ti0.2O4 by modifying the lithium insertion mechanism2023

    • Author(s)
      Ariyoshi Kingo、Sugawa Jun
    • Journal Title

      Electrochimica Acta

      Volume: 455 Pages: 142425-142425

    • DOI

      10.1016/j.electacta.2023.142425

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clarification of particle size dependence on the rate capabilities of Li[Ni1/2Mn3/2]O4 materials and electrodes by the dilute electrode method2021

    • Author(s)
      Kingo Ariyoshi, Jun Sugawa, Shumpei Masuda
    • Journal Title

      Journal of Power Sources

      Volume: 509 Pages: 230349-230349

    • DOI

      10.1016/j.jpowsour.2021.230349

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of particle size of lithium manganese oxide on charge transfer resistance and contact resistance evaluated by electrochemical impedance analysis2020

    • Author(s)
      Ariyoshi Kingo、Tanimoto Masumi、Yamada Yusuke
    • Journal Title

      Electrochimica Acta

      Volume: 364 Pages: 137292

    • DOI

      10.1016/j.electacta.2020.137292

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019820

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Ti置換LiNi0.5Mn1.5O4の希薄電極法を用いたクロノアンペロメトリーによる反応速度解析2022

    • Author(s)
      廣嶋 伸哉、有吉 欽吾
    • Organizer
      第63回電池討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] フラックス法で合成したLiCo1/3Ni1/3Mn1/3O2正極の粒子サイズおよび形態がレート特性に及ぼす影響2022

    • Author(s)
      田中 利幸、有吉 欽吾
    • Organizer
      第63回電池討論会
    • Related Report
      2022 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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