一种双一维纳米互穿结构的复合材料及其制备方法和应用
By using a composite material with an interpenetrating porous silicon nanowire and carbon nanotube structure, the stability problem of silicon-based anode materials caused by volume expansion in lithium-ion batteries has been solved, resulting in a high-capacity and long-life lithium-ion battery anode suitable for commercial applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI WANRUN NEW ENERGY TECH CO LTD
- Filing Date
- 2023-02-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing silicon-based anode materials suffer from structural instability due to volume expansion in lithium-ion batteries, affecting battery performance. Current technologies struggle to achieve a balance between high capacity, stability, and low cost for commercial application.
A double one-dimensional nano-interpenetrating structure is formed by porous silicon nanowires and carbon nanotubes. The silicon-carbon chemical bonds are used to buffer the volume expansion of carbon nanotubes, forming a stable SEI film. The composite material is then prepared by combining the carbon coating process.
It achieves high capacity and long lifespan for lithium-ion battery anodes, maintains battery performance stability by buffering volume expansion, and has a simple process, low cost, and is suitable for mass production.
Smart Images
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