一种正极材料的包覆方法及锂钠电池
By introducing a carbon source and performing carbonization treatment during the coating process of the cathode material, combined with mechanical fusion and high-temperature calcination, a uniform multi-level structure coating layer is formed, which solves the problem of agglomeration of the coating layer on the surface of the cathode material under high-temperature calcination and improves the electrochemical performance and cycle stability of the battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI UNIV
- Filing Date
- 2023-05-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to maintain the integrity and uniformity of the coating layer on the surface of the cathode material during high-temperature calcination, leading to a decline in battery performance and failing to achieve the combined effects of surface coating and surface doping.
A carbon source is introduced during the coating process of the cathode material, and carbonization is carried out in an inert atmosphere. Then, it is mixed with a metal element precursor and formed a uniform multi-level structure coating layer through mechanical fusion and high-temperature calcination, which inhibits the aggregation of nanoparticles.
This achieved an overall performance improvement in the cathode material, enhanced the stability and electrochemical performance of the electrode material, and improved the cycle life and capacity retention of the battery.
Smart Images
Figure CN116845188B_ABST