一种高倍率复合硅基负极材料及其制备方法和应用
By preparing a high-rate composite silicon-based anode material with a core-shell structure, the core is a porous composite framework of fluorinated oxide solid electrolyte and carbon, and silicon nanomaterials are deposited on the surface and coated with fluorinated oxide solid electrolyte and carbon. This solves the problems of poor rate performance and low first-cycle coulombic efficiency of silicon-based anode materials and improves the overall performance of lithium-ion batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LIYANG TIANMU PILOT BATTERY MATERIAL TECH CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing silicon-based anode materials suffer from poor rate performance and low first-cycle coulombic efficiency, making it difficult to meet the requirements of high energy density and safety performance, especially in lithium-ion batteries.
The high-rate composite silicon-based anode material has a core-shell structure. The core is a porous composite framework of fluorinated oxide solid electrolyte and carbon. Silicon nanomaterials are deposited on the surface and pore walls. The outer layer is coated with fluorinated oxide solid electrolyte and carbon to form stable FC bonds, which improves conductivity and mechanical strength.
It improves the rate performance and first-cycle coulombic efficiency of lithium-ion batteries, enhances the structural strength and compaction density of materials, improves the conductivity and ion conduction ability of materials, and solves the performance bottleneck of silicon-based anode materials in lithium-ion batteries.
Smart Images
Figure CN121260765B_ABST