Water-free electrolyte solution for lithium secondary batteries and lithium secondary batteries containing these
Patent Information
- Application Number
- DE602022031343
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-10-05
- Filing Date
- 2022-10-06
- Publication Date
- 2026-02-25
- Estimated Expiration
- 2042-10-06
AI Technical Summary
Lithium secondary batteries experience increased resistance and capacity degradation due to the decomposition of electrolyte components under high temperature conditions, leading to instability of the SEI film and transition metal ion elution, which affects battery performance.
A non-aqueous electrolyte solution for lithium secondary batteries containing a compound with a propargyl group and fluorocarbon functional group forms a low-resistance SEI film, preventing additional decomposition and elution of transition metal ions, thereby stabilizing the electrode surfaces.
The solution suppresses self-discharge reactions and increases output characteristics by forming a robust SEI film, reducing initial resistance and maintaining battery performance at various temperatures.