一种微膨胀石墨与导电聚合物的复合材料及其制备方法和应用
By coating micro-expanded graphite with polyaniline in an acidic environment, a micro-expanded graphite@conductive polymer composite material is formed, which solves the problems of low capacity and poor fast-charging performance of artificial graphite, realizes a lithium-ion battery anode material with high capacity and fast-charging performance, and reduces production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 云南中晟新材料有限责任公司
- Filing Date
- 2024-03-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing artificial graphite as a negative electrode material for lithium-ion batteries has low capacity and poor fast-charging performance, which limits the energy density and cycle life of the battery.
In an acidic environment and in the presence of an oxidant, micro-expanded graphite is coated with polyaniline to form a micro-expanded graphite@conductive polymer composite material. The aniline is then used to perform in-situ polymerization in the oxidizing environment of the graphite during expansion to form a conductive polymer that coats the graphite surface or fills the pores of the graphite.
It improves the capacity and fast-charging performance of lithium-ion battery anode materials, reduces production costs, and enhances electrochemical and safety performance.
Smart Images
Figure CN118598129B_ABST