高体积电阻率正极材料及其制备方法、锂离子电池
By preparing a cathode material with high volume resistivity and forming a coating layer on its surface, the cycle performance and safety issues of lithium-ion batteries when improving energy density were solved, achieving a balance between high discharge capacity, long lifespan, and high-temperature storage performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING EASPRING MATERIAL TECH CO LTD
- Filing Date
- 2022-12-30
- Publication Date
- 2026-07-17
AI Technical Summary
While existing lithium-ion battery cathode materials improve energy density, they also reduce cycle performance and safety. Furthermore, gas generation during high-temperature storage can cause battery swelling, affecting lifespan and safety.
By employing a high volume resistivity cathode material and its preparation method, a coating layer is formed on the surface of the cathode material through low-temperature heat treatment, thereby constructing a fast Li+ ion channel, improving electronic conductivity and Li+ ion transport efficiency, and controlling the Li2CO3/LiOH content ratio to improve pulping and processing performance and delay the thermal runaway process.
This technology achieves high discharge capacity in lithium-ion batteries while significantly improving cycle life and high-temperature storage performance, balancing battery capacity and safety, and enhancing the kinetic properties and interfacial structural stability of materials.
Smart Images
Figure CN116014118B_ABST