一种锂离子电池及用电装置
By using a reasonable combination of silicon-carbon particles and carbon materials, along with electrolyte additives, a stable SEI film is formed in lithium-ion batteries, solving the volume change problem of silicon-based anode materials, improving the cycle performance and energy density of the battery, and extending the battery's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN HIGHPOWER TECH CO LTD
- Filing Date
- 2024-08-30
- Publication Date
- 2026-07-17
AI Technical Summary
Silicon-based anode materials in lithium-ion batteries suffer from large volume changes and low conductivity, leading to electrode particle pulverization, active material shedding, and slow electrode reaction kinetics, which affect battery cycle life and rate performance.
By using a reasonable combination of silicon-carbon particles and carbon materials in the negative electrode of lithium-ion batteries, and adding an appropriate amount of fluoroethylene carbonate to the electrolyte, a stable solid electrolyte interface (SEI) film is formed, which limits the expansion of the silicon negative electrode, suppresses side reactions, and improves the battery cycle performance.
It effectively suppresses the expansion of silicon anodes, improves battery cycle performance and lifespan, while increasing battery energy density and fast charging performance, and reducing costs.
Smart Images
Figure CN119108638B_ABST