▎ 摘　　要

NOVELTY - Preparation of lithium iron phosphate composite positive electrode material involves (S1) mixing ferrous sulfate, phosphoric acid and lithium hydroxide, heating for reaction, cooling the reaction product, filtering, cleaning, and vacuum drying to obtain lithium iron phosphate, and grinding, (S2) soaking the ground lithium iron phosphate in a graphene oxide solution, adding an excessive reducing agent, heating and reducing to obtain reduced graphene oxide/lithium iron phosphate, filtering and drying, and (S3) adding sodium anthraquinone-2,6-disulfonate and pyrrole into deionized water, dissolving to obtain a solution (A), adding ferric trichloride into deionized water, dissolving to obtain a solution (B), adding reduced graphene oxide/lithium iron phosphate into the solution (A), shaking and dripping the solution (B) at 0℃, reacting completely, filtering and drying. USE - Preparation of lithium iron phosphate composite positive electrode material (claimed). ADVANTAGE - The method provides lithium iron phosphate composite positive electrode material having excellent electrical conductivity and lithium ion diffusion property.