Elucidation of the high-speed charging mechanism through blast processing of the metal anode solid-state battery electrode interface

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K14761
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36020:Energy-related chemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Kodama Manabu 東京工業大学, 工学院, 助教 (90825879)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Keywords: 全固体電池 / リチウム金属負極 / デンドライト / ブラスト加工

Outline of Final Research Achievements

In lithium metal anode solid-state batteries, blast processing of the solid electrolyte surface prevents internal short circuits during fast charging and enhances charging speed. This processing method is low-cost and more suitable for mass production compared to existing techniques. This study elucidates the mechanism behind the fast charging enabled by blast processing, revealing that improvements in interface durability and contact are crucial. The findings suggest that optimal processing conditions can lead to further performance enhancements. The results of this research have been published in one international paper and presented at nine international and domestic conferences.

Free Research Field

電気化学

Academic Significance and Societal Importance of the Research Achievements

本研究では、リチウム金属負極全固体電池のブラスト加工が高速充電を可能にし、安全性と効率を向上させることを示した。これは、電池技術の進展において重要な進歩であり、エネルギー貯蔵の持続可能性とアクセシビリティを高める。さらに、低コストで量産可能な方法であるため、電気自動車や再生可能エネルギーシステムへの応用が期待され、社会的・経済的影響も大きい。