一种非水电解液添加剂、非水电解液和二次电池
By using borate ester-based non-aqueous electrolyte additives with specific structures, a stable SEI film is formed, which solves the problems of SEI film inhomogeneity and high impedance in secondary batteries, and achieves improved high-temperature performance, improved low-temperature performance and reduced impedance of the battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN CAPCHEM TECH CO LTD
- Filing Date
- 2022-08-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing secondary battery additives form SEI films with uneven thickness, poor high-temperature stability, and low metal ion conductivity, resulting in high battery impedance, which affects battery life and high-rate discharge performance. Furthermore, the metal ion migration impedance increases at low temperatures.
By using non-aqueous electrolyte additives, boronic acid ester compounds with specific structures are formed to create a stable SEI film, reducing the activation energy of the desolvation process, improving the high-temperature and low-temperature performance of the battery, and reducing impedance.
By forming a stable SEI film, the high-temperature performance and low-temperature performance of the secondary battery are improved, and the initial impedance is reduced, thereby enhancing the overall performance of the battery.
Smart Images
Figure CN117558979B_ABST