▎ 摘　　要

NOVELTY - An anode material (M1) is prepared by mixing taking bivalent or trivalent iron salts, reducing agent, lithium salt and phosphoric acid or phosphate into dispersing liquid; and doping graphene, graphene oxide and intercalated graphene into iron phosphate lithium nanoparticle, or directly mixing iron phosphate lithium nanoparticle with intercalated graphene, graphene oxide chemically reduced graphene, synthesizing graphene, graphene oxide or material covered with iron phosphate lithium nanoparticle structure after drying, filtering, washing, redrying and annealing. USE - Method is used for preparation of anode material (M1) used for lithium ion battery doped with graphene (claimed). ADVANTAGE - The prepared iron phosphate lithium nanoparticle can greatly improve conductive ability of electrons in performance, thus providing anode material (M1) with simple machining process, low cost, high capacity and safety. DETAILED DESCRIPTION - Anode material (M1) is prepared by: (A) preparing graphene, graphene oxide, and intercalated graphene; (B) taking bivalent or trivalent iron salts, reducing agent, lithium salt and phosphoric acid or phosphate as raw materials and mixing into dispersing liquid, and preparing iron phosphate lithium nanoparticle by water heating, coprecipitation or sol-gel method; and (C) doping graphene, graphene oxide and intercalated graphene in composite raw material of iron phosphate lithium nanoparticle, or after preparing iron phosphate lithium nanoparticle, directly mixing iron phosphate lithium nanoparticle with intercalated graphene, graphene oxide chemically reduced graphene, synthesizing graphene, graphene oxide or material covered with iron phosphate lithium nanoparticle structure after drying, filtering, washing, redrying and annealing.