非水电解质二次电池
By setting the first and second peaks of the particle size distribution curve in the positive electrode active material, and combining this with the use of silicon-containing materials, the problem of uneven electrolyte distribution caused by silicon-containing materials was solved, achieving high capacity and good charge-discharge cycle characteristics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2024-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
In non-aqueous electrolyte secondary batteries, silicon-containing materials exhibit significant volume changes due to lithium-ion uptake, leading to uneven electrolyte distribution and affecting battery capacity and charge-discharge cycle characteristics.
The design employs a particle size distribution curve of the positive electrode active material with a first peak and a second peak, combined with silicon-containing materials in the negative electrode additive layer, to improve the diffusivity and uniform distribution of the non-aqueous electrolyte.
It balances the high capacity of non-aqueous electrolyte secondary batteries with the improvement of charge-discharge cycle characteristics, thereby enhancing the overall performance of the battery.
Smart Images
Figure CN122422985A_ABST