2023 Fiscal Year Final Research Report
Creation of technology platforms for rapid visualization of the internal state of batteries for the realization of a safe battery society
| Project/Area Number |
22K18865
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 25:Social systems engineering, safety engineering, disaster prevention engineering, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
Kazuhisa SATO 東北大学, 工学研究科, 准教授 (50422077)
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| Co-Investigator(Kenkyū-buntansha) |
荒木 稚子 東京工業大学, 工学院, 教授 (40359691)
鷲見 裕史 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究グループ長 (80613257)
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| Project Period (FY) |
2022-06-30 – 2024-03-31
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| Keywords | 全固体電池 / 燃料電池 / 信頼性 / 耐久性 / 迅速評価 / その場非破壊評価 / 界面 |
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| Outline of Final Research Achievements |
Fuel cells and secondary batteries are well known as the method of electrical energy production and storage with the lowest energy loss. On the other hand, it is extremely important to visualise the inside of all-solid-state electrochemical devices, which change dynamically every time they generate electricity or charge and discharge, to ensure the safety and reliability of the batteries. However, it is difficult to capture and visualise the movement of the ions themselves because they are extremely small and move quickly, so little is known about when degradation occurs during operation.
In this study, a rapid evaluation method was developed to elucidate the stability and reactivity of the interface between different phases where electrochemical reactions take place in all-solid-state electrochemical devices, and the coupled effects of mechanical, electrical and chemical reactions were elucidated.
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| Free Research Field |
材料力学・エネルギー変換技術
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| Academic Significance and Societal Importance of the Research Achievements |
発電や充放電のたびに動的に変化する全固体電気化学デバイスの内部の様子を可視化することは、電池の安全性・信頼性を担保する上で極めて重要である。
そこで本研究では、全固体電気化学デバイスの電気化学反応が行われる異相界面の安定性や反応性の解明に向けた迅速評価手法の開発を行い、力学・電気・化学反応の連成効果の解明に成功した。本成果は全固体電池のみならず、様々な積層デバイスに応用できることが期待できる．
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