正极极片及其制备方法、电池单体、电池及用电设备
By layering conductive coatings in aqueous cathode batteries, the adhesion to the current collector and water resistance are improved, solving the problem of poor cycle stability of aqueous cathode batteries and achieving higher battery stability and energy density.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2022-07-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing aqueous cathode batteries suffer from poor cycle stability, mainly due to the limited contact area between the current collector and the active material, which leads to increased interfacial resistance and affects battery performance.
By layering the water-based conductive coatings, the adhesion between the first water-based conductive coating and the current collector is improved, and the water resistance of the second water-based conductive coating is used to prevent the coating from dissolving during the preparation process, thereby improving the adhesion and electrical connection between the electrode layer and the current collector.
It improves the cycle stability and capacity retention of the battery, reduces the rate of resistance change and thickness non-uniformity, and enhances the performance consistency of the positive electrode sheet.
Smart Images
Figure CN117716540B_ABST