淀粉基硬碳负极活性材料及其制备和在钠离子电池中的应用
By combining starch raw materials with three-stage controlled gas heat treatment and co-pre-oxidation raw materials, the foaming problem in the preparation process of starch-based anode materials was solved, realizing the efficient application of starch-based hard carbon materials in sodium-ion batteries and improving the fast charging and high-rate long-range cycle performance of the materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2024-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Starch-based anode materials are prone to foaming during preparation, making them difficult to adapt to the requirements of fast charging and high-rate long-term cycling. Existing methods suffer from problems such as long preparation time, high cost, and complex processes.
A mixture of starch raw materials and co-pre-oxidized raw materials is used, and a three-stage controlled-atmosphere heat treatment is performed: a combination of oxygen-containing atmosphere, carbon dioxide-containing atmosphere and protective atmosphere. This optimizes the physicochemical structure of starch-based materials and improves the storage capacity and transport pathway of sodium ions.
A starch-based hard carbon material suitable for fast charging and high-rate long-range cycling stability was prepared, which improved the performance of sodium-ion batteries, especially the first-cycle discharge specific capacity and cycle stability.
Smart Images
Figure CN118458748B_ABST