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Microscopic mechanism of thermal cycle fatigue damage in high capacitance batteries

Research Project

Project/Area Number 16K05989
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionTokyo City University

Principal Investigator

OHTSUKA Toshihisa  東京都市大学, 工学部, 教授 (40233176)

Co-Investigator(Kenkyū-buntansha) 岸本 喜直  東京都市大学, 工学部, 准教授 (20581789)
小林 志好  東京都市大学, 工学部, 准教授 (90295014)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords機械材料・材料力学 / 損傷力学 / 熱サイクル疲労 / マルチフィジックス / マルチスケール / 積層構造 / 薄板構造 / 二次電池
Outline of Final Research Achievements

This study has revealed microscopic mechanism and criterion of crack initiation at electrode material that causes thermal cycle fatigue damage in high capacitance batteries. A series of static tensile tests and bending fatigue tests, multiscale analyses have been conducted and the followings are summarized. (1) The microscopic observation has clarified that binder supports microscopic structure of the electrode material. The macroscopic crack initiation at the electrode material is microscopic fracture of the binder. (2) The tensile strength and the S-N curve of the electrode material that is equivalent to the criterion of crack initiation at the electrode material can be estimated by the analysis technique in which the microscopic structure of the electrode material is approximated by simple crystal lattices.

Academic Significance and Societal Importance of the Research Achievements

我が国の送電インフラを維持するには発電した電気を効率良く運用できるようにすることが喫緊の課題であり,国内の使用電力に相当するエネルギーを一時的に蓄電できる電池が必須である.このような高容量の電池の十分な耐久性と安全性を保証する際,蓄電性能の劣化や電池の故障の起点となる電極材の疲労損傷に対する理解が不可欠であり,本研究ではその微視的なメカニズムを解明するとともに予測方法を構築できた.今後,電場および伝熱場と連成するマルチフィジックス解析を導入すれば,電極材の実環境下での劣化予測が可能になるになるとともに,電池の内部構造を最適化することによって,発電特性や放熱特性の経時劣化の緩和を実現できる.

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Simple evaluation method of mechanical strength and mechanical fatigue of negative electrode for lithium-ion battery2020

    • Author(s)
      Yoshinao Kishimoto, Yukiyoshi Kobayashi, Toshihisa Ohtsuka, Shota Ono, Hiroshi Yamazaki, Yuki Tsukagoshi, Kyohei Nakamura
    • Journal Title

      Mechanical Engineering Journal

      Volume: 7 Issue: 4 Pages: 19-00545-19-00545

    • DOI

      10.1299/mej.19-00545

    • NAID

      130007887813

    • ISSN
      2187-9745
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] リチウムイオン電池負極材の破壊メカニズムに関する研究2019

    • Author(s)
      塚越祐貴, 中村恭平, 岸本喜直, 小林志好, 大塚年久
    • Organizer
      日本機械学会 第27回機械材料・材料加工技術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] リチウムイオン電池負極板の機械的性質に関する研究2019

    • Author(s)
      中村恭平, 塚越祐貴, 岸本喜直, 小林志好, 大塚年久
    • Organizer
      日本機械学会 第27回機械材料・材料加工技術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] リチウムイオン電池負極材の機械的疲労のマルチスケールモデリング2019

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 中村恭平, 塚越祐貴, 鶴田龍也
    • Organizer
      日本機械学会 材料力学部門若手シンポジウム2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] リチウムイオン電池負極材の機械的疲労損傷の評価方法に関する研究2018

    • Author(s)
      鶴田龍也, 岸本喜直, 小林志好, 大塚年久, 塚越祐貴, 中村恭平
    • Organizer
      日本機械学会 第26回機械材料・材料加工技術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Computational evaluation of bending fatigue test on electrode of lithium-ion battery2018

    • Author(s)
      Yoshinao Kishimoto, Yukiyoshi Kobayashi, Toshihisa Ohtsuka, Tatsuya Tsuruta, Kyohei Nakamura, Yuki Tsukagoshi
    • Organizer
      The 6th European Conference on Computational Mechanics and the 7th European Conference on Computational Fluid Dynamics
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Basic study on mechanical property of electrode in lithium-ion battery2017

    • Author(s)
      Yoshinao Kishimoto, Yukiyoshi Kobayashi, Toshihisa Ohtsuka, Tatsuya Tsuruta, Kyohei Nakamura, Yuki Tsukagoshi
    • Organizer
      Joint-Symposium on Mechanics of Advanced Materials & Structures 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fatigue Life Prediction Based on Fatigue Mechanism (in the Case of Stress Ratio: R = -1)2016

    • Author(s)
      Yukiyoshi Kobayashi, Yoshinao Kishimoto, Toshihisa Ohtsuka
    • Organizer
      Asia-Pacific Conference on Fracture and Strength 2016
    • Place of Presentation
      富山国際会議場(富山)
    • Year and Date
      2016-09-19
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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