一种溶剂热法改性普鲁士蓝类钠电正极材料的方法及由该方法制备的正极材料
By coating elemental iron onto the surface of Prussian blue sodium-based cathode material using a solvothermal method, the problems of water absorption, low conductivity, and electrolyte side reactions in the material were solved, resulting in improved high conductivity and stability, and enhanced electrochemical performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG HAIHUA GRP CO LTD
- Filing Date
- 2024-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
Prussian blue sodium cathode materials suffer from poor cycle stability and significant potential polarization due to lattice vacancies, water of crystallization, poor electronic conductivity, and side reactions between the electrode and electrolyte. Existing oxide-coated modified materials have low conductivity, and high-temperature heat treatment processes are difficult to implement.
Iron is coated onto the surface of Prussian blue sodium electrode material using a solvothermal method. The iron coating layer is formed by the decomposition of Fe(CO)5, which avoids contact between the material and moisture, suppresses side reactions in the electrolyte, and improves electronic conductivity.
It reduces the water absorption of materials, improves electrical conductivity and interfacial stability, enhances electrochemical kinetics and stability, and improves the rate performance and cycle performance of materials.
Smart Images
Figure CN119118155B_ABST