一种磷酸铁锂复合材料及其制备方法和应用
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TAIYUAN SAIYIN NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Lithium iron phosphate (LFP) has low electronic conductivity and ion diffusion coefficient as a cathode material for lithium-ion batteries, resulting in high internal resistance and limiting its application in high-power devices. Furthermore, carbon coating causes LFP particles to agglomerate and grow, affecting cycle life.
Precursor powder was prepared by mixing lithium iron phosphate and a carbon source, and then subjected to high-temperature heat treatment at temperatures above 2800℃ to transform the carbon source into graphene. Hexagonal boron nitride was added to form COB covalent bonds with the graphene, establishing a stable three-dimensional conductive network and inhibiting the aggregation and growth of lithium iron phosphate particles.
It significantly improves the cycle life of lithium batteries by forming a stable three-dimensional conductive network, which suppresses the aggregation and growth of lithium iron phosphate particles and enhances the battery's lifespan.
Smart Images
Figure CN120841479B_ABST