一种硅嵌入氮掺杂碳纳米片-三维石墨烯复合材料及其制备方法和应用
By preparing silicon-embedded nitrogen-doped carbon nanosheet anode materials on a three-dimensional graphene foam nickel substrate, the problems of volume expansion and poor conductivity of silicon anode materials in lithium-ion batteries were solved, and high-efficiency electrochemical performance was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEFEI GUOXUAN KEHONG NEW ENERGY TECH CO LTD
- Filing Date
- 2023-09-12
- Publication Date
- 2026-07-17
AI Technical Summary
Silicon anode materials have low cycle reversibility in lithium-ion batteries due to volume expansion, poor conductivity, and active material shedding, which limits their practical application.
Using nickel foam loaded with three-dimensional graphene as a substrate, a silicon-embedded nitrogen-doped carbon nanosheet anode material was prepared. By embedding silicon nanoparticles in a three-dimensional graphene network and combining them with porous nitrogen-doped carbon nanosheets, a Si-NC/3DGN composite material was formed, which was directly used as an anode for lithium-ion batteries.
It effectively suppresses the volume expansion of silicon particles, improves conductivity and cycle stability, prevents active material shedding, and enhances battery performance.
Smart Images
Figure CN117276478B_ABST