全固体电池
By controlling the range of negative electrode capacity ratio x and fill rate y in all-solid-state batteries, the problem of increased resistance caused by Si-based active materials was solved, and the stability and performance of the battery were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2022-03-14
- Publication Date
- 2026-07-17
AI Technical Summary
In all-solid-state batteries, when Si-based active materials are used as the negative electrode active material, the resistance increases during charging and discharging, and cracking is easily generated, especially at high fill rates, which affects battery performance.
By controlling the ratio of negative electrode capacity to positive electrode capacity x within 2≦x≦2.7 and controlling the negative electrode fill rate y within the range of 21.43x+14.14≦y≦4.29x+60.43, the increase in resistance caused by charging and discharging is suppressed.
Even when using Si-based active materials, it can effectively suppress the increase in resistance caused by charging and discharging, and maintain the stability of the battery's electrical performance.
Smart Images
Figure CN115207443B_ABST