正极材料、正极极片及其制备方法、二次电池和用电装置
By using positive electrode materials composed of polycrystalline lithium nickel cobalt manganese oxide, polycrystalline lithium manganese iron phosphate, and lithium manganese oxide, combined with coating technology of conductive carbon and polyvinylidene fluoride, a positive electrode sheet with high energy density and stability was prepared, which solved the problem of insufficient cycle performance of lithium-ion batteries and improved the overall performance of the battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 安徽得壹能源科技有限公司
- Filing Date
- 2024-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium-ion batteries suffer from insufficient cycle performance in industrial production and application, especially in terms of the ability of the electrodes to retain electrolyte, which needs to be improved.
A positive electrode sheet was prepared by using a positive electrode material composed of polycrystalline lithium nickel cobalt manganese oxide, polycrystalline lithium manganese iron phosphate, and lithium manganese oxide, combined with a mixed slurry of conductive carbon, carbon nanotubes, and polyvinylidene fluoride coated on a current collector, thereby optimizing its energy density and stability.
It significantly improves the overall energy density and power density of lithium-ion batteries, extends cycle life, reduces the risk of thermal runaway, and improves the cycle performance and low-temperature performance of batteries.
Smart Images
Figure CN118198337B_ABST