▎ 摘　　要

NOVELTY - Preparation of graphene/lithium iron phosphate composite material involves (1) ultrasonically dispersing the oxidized graphite in at least one of solvent, deionized water, ethanol solution and N-methylpyrrolidone to obtain oxidized graphene suspension, (2) adding oxidized graphene suspension to at least one of lithium iron phosphate precursor, lithium iron phosphate pre-sintered material and lithium iron phosphate sintered body, subjecting slurry to wet ball milling, grinding to obtain oxidized composite material, (3) calcining composite material. USE - Preparation of graphene/lithium iron phosphate composite material used in large-scale industry. ADVANTAGE - The preparation of graphene/lithium iron phosphate composite material is simple. The composite material can form excellent conductive network, and is easy to achieve large-scale industrial production. DETAILED DESCRIPTION - Preparation of graphene/lithium iron phosphate composite material involves (1) ultrasonically dispersing the oxidized graphite in solvent, deionized water, ethanol solution and N-methylpyrrolidone to obtain oxidized graphene suspension, (2) adding oxidized graphene suspension to at least one of lithium iron phosphate precursor, lithium iron phosphate calcined material and lithium iron phosphate sintered body, subjecting slurry to wet ball milling, grinding to obtain oxidized graphene/lithium iron phosphate composite material, (3) calcining composite material in a reducing atmosphere.