一种复合集流体及其制备方法和应用
By introducing a composite current collector containing epoxy resin and flame-retardant functional compounds onto the current collector, the problems of poor adhesion and safety of hard carbon anodes are solved, enabling the application of sodium-ion batteries with high adhesion and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
- Filing Date
- 2024-12-04
- Publication Date
- 2026-07-17
AI Technical Summary
In existing sodium-ion batteries, the large specific surface area of the hard carbon anode leads to poor adhesion to foil materials, easy powder shedding, reduced initial efficiency, rapid cycle life decay, and safety hazards.
A composite current collector is used, comprising a current collector substrate and a functional layer. The functional layer is composed of epoxy resin and flame retardant functional compounds, which form an adhesive composition through esterification reaction, thereby improving the adhesion and safety between the current collector and the active layer.
It improves the adhesion between the current collector and the active layer, reduces the Hi-pot defect rate, enhances the safety performance of the battery, and is suitable for industrial production.
Smart Images
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