一种MOF衍生的CoS / FeS异质结构钠离子电池负极材料及其制备方法
By constructing a CoS/FeS heterostructure sodium-ion battery anode material, the problems of slow Na+ diffusion and structural collapse in sodium-ion batteries were solved by utilizing the synergistic effect of lattice distortion and interface, thus achieving an electrode material with high conductivity and long lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INNER MONGOLIA UNIV OF SCI & TECH
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
The slow diffusion of Na+ and the problem of crystal structure collapse in sodium-ion batteries make it difficult to select and design electrode materials. Traditional materials have kinetic lag, short cycle life, and are prone to structural collapse.
A CoS/FeS heterostructure sodium-ion battery anode material was constructed. Phytic acid was introduced as a phosphorus and carbon source and melamine as a nitrogen source through lattice distortion and interface synergistic effect to form a nitrogen and phosphorus doped amorphous carbon layer, construct a continuous conductive network, suppress electrolyte side reactions, and optimize electrode surface wettability.
It significantly shortens the Na+ transport path, improves the material's conductivity, extends cycle life, maintains high capacity and stability, and solves the common problems of electrolyte decomposition and capacity decay in sodium-ion batteries.
Smart Images
Figure CN122144796B_ABST