Sodium ion battery
By using polyanionic compounds and layered metal oxides as positive electrodes and amorphous hard carbon as negative electrodes in sodium-ion batteries, the capacity ratio of the positive and negative electrodes is optimized, solving the problems of structural instability and poor cycle performance of sodium-ion batteries, and achieving high performance and excellent battery performance at low temperatures.
Patent Information
- Application Number
- CN202411469990.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2026-05-01
AI Technical Summary
Existing active materials for the positive and negative electrodes of sodium-ion batteries suffer from problems such as structural instability, poor cycle performance, and poor conductivity, making it difficult to meet the requirements of high-performance and low-temperature applications.
Polyanionic compounds and layered metal oxides are used as positive electrode active materials, and amorphous hard carbon is used as negative electrode active material. By adjusting the capacity ratio of the positive and negative electrodes, the synergistic effect of the positive and negative electrodes is optimized, thereby improving the stability and low-temperature performance of the battery.
It significantly improves the rate performance, cycle performance, and low-temperature performance of sodium-ion batteries, extends the cycle life of the batteries, and improves the stability of the batteries.