Additive composition, electrolyte, and battery
By using additive compositions with specific structures in the electrolyte to generate CEI and SEI films with strong lithium conductivity and uniform density, the problems of high impedance, poor cycle performance and gas generation in batteries are solved, and the battery's high efficiency, room temperature and high temperature cycle performance and safety performance are improved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GUANGZHOU TINCI MATERIALS TECH
- Filing Date
- 2024-12-30
- Publication Date
- 2026-05-21
AI Technical Summary
Existing electrolyte additives in batteries cause problems such as high impedance, poor cycle performance at room temperature and high temperature, and gas generation during operation, thus degrading the battery's cycle performance and safety performance.
By employing a first and second additive with a specific structure (such as trimethylolpropane phosphite) in synergy, a CEI film and an SEI film with strong lithium conductivity and uniform density are generated on the positive and negative electrode surfaces, reducing electrolyte acidity and improving the battery's room temperature and high temperature cycle performance, rate performance and safety performance.
By generating dense CEI and SEI films, the battery's room temperature and high temperature cycle performance, rate performance, and safety performance are significantly improved, while reducing gas generation issues.
Smart Images
Figure PCTCN2024143780-APPB-I100001 
Figure PCTCN2024143780-APPB-I100002 
Figure PCTCN2024143780-APPB-I100003