一种磷酸锰铁锂正极材料及其制备方法
The lithium manganese iron phosphate cathode material was prepared by solution combustion synthesis and ultrasonic vacuum permeation technology, which solved the problems of uniform mixing of manganese and iron and construction of porous structure, improved the rate performance and cycle stability of the material, and realized a green and efficient preparation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- RENMIN UNIVERSITY OF CHINA
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for preparing lithium manganese iron phosphate are difficult to achieve atomic-level uniform mixing of manganese and iron, and it is also difficult to construct porous microstructures that are conducive to ion transport, resulting in insufficient rate performance and cycle stability of the material.
Manganese-iron composite oxide precursors were prepared by solution combustion synthesis. A three-dimensional porous sponge-like structure was formed through a self-propagating reaction. Lithium, phosphorus and carbon sources were introduced into the framework through ultrasonic vacuum-assisted infiltration and ultrafast freezing technology. Subsequently, lithium manganese-iron phosphate cathode material was formed by low-temperature sintering.
Atomic-level uniform mixing of manganese and iron elements was achieved, constructing a porous structure that facilitates ion transport, improving the rate performance and cycle stability of the material. At the same time, the process is simple, environmentally friendly, and suitable for industrial applications.
Smart Images
Figure CN122059448B_ABST