▎ 摘　　要

NOVELTY - A composite material contains lithium iron phosphate, and graphene coated on surface of lithium iron phosphate. Lithium iron phosphate and graphene are used in a mass ratio of 1-100:1. USE - Composite material (claimed). ADVANTAGE - The composite material has excellent conductivity, charging and discharging performance and cycle stability, and can be prepared in simple manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite material, which involves dissolving lithium iron phosphate and graphene in a solvent for 2-5 hours under ultrasonic conditions, uniformly mixing, drying the mixture, and increasing the temperature at 500-800 degrees C for 5-12 hours.