▎ 摘　　要

NOVELTY - Preparing graphene-coated lithium iron phosphate composite material comprises using spray drying or evaporating and drying, coating the graphene oxide and lithium iron phosphate to obtain graphene coated lithium iron phosphate precursor, heating graphene coated lithium iron phosphate precursor to obtain graphene-coated lithium iron phosphate composite material, the ratio of the sheet diameter of the graphene oxide to the D50 of the lithium iron phosphate is 0.05-40. USE - The method is useful for preparing graphene-coated lithium iron phosphate composite material. ADVANTAGE - The method improves the charging and discharging performance under the large magnification of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-coated lithium iron phosphate composite material prepared by above method.