▎ 摘　　要

NOVELTY - Anode material of lithium ion battery coated with LiMn(0.5)Fe(0.5)PO(4), where LiMn(0.5)Fe(0.5)PO(4) is used as the coating material. USE - Used as anode material of lithium ion battery. ADVANTAGE - The material has strong connection force, greatly increases the interface connection of the coating and the anode material, the long-term charging and discharging circulation process is not easy to fall off; the ion doping of the sub-surface layer can be induced to a certain extent, the stability of the structure is improved; the final coating product is in the form of lithium salt, which can effectively promote the transmission of lithium ion, improve the multiplying power performance of the material. DETAILED DESCRIPTION - Preparing lithium ion battery anode material coated with LiMn(0.5)Fe(0.5)PO(4) comprises (1) preparing precursor, (2) dissolving deionized water oxide, adding polyacrylic acid and concentrated sulphuric acid to obtain solution D, stirring and reacting the obtained solution D to obtain the polyacrylic acid-graphene oxide, (3) dissolving the polyacrylic acid-graphene oxide in the deionized water, adding the precursor obtained in the step (1), stirring and reacting the solution, then adding 1-5 mol of ammonium dihydrogen phosphate, 0.25-0.5 mol ferric sulfate and 0.25-0.5 mol manganese sulfate, continuously stirring and reacting to obtain precursor coated with manganese iron phosphate, (4) mixing the precursor obtained in the step (3) with lithium salt, sintering, crushing, sieving, removing iron and packaging to obtain the anode material coated with LiMn(0.5)Fe(0.5)PO(4).