▎ 摘　　要

NOVELTY - An anode material is obtained by activating graphene oxide modified lithium iron phosphate. The mass ratio of activated graphene oxide and lithium iron phosphate is 0.8-1.5:100. USE - The anode material is useful for preparing lithium ion battery (claimed). ADVANTAGE - The anode material has excellent discharging performance, circulation stability, hydrophilicity and electrical conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation method of anode material, which involves dissolving activated graphene oxide and lithium iron phosphate in deionized water, stirring and dispersing, drying the material, placing the dried material in a nitrogen atmosphere and heat-preserving at 650-750 degrees C for 6-10 hours; and (2) preparation method of lithium ion battery, which involves weighing anode material, conductive carbon black and polyvinylidene fluoride in mass ratio of 95-97:2-0:3, uniformly mixing, adding N-methylpyrrolidone to the mixed material and stirring to form 45-55 wt.% coated material, evenly coating the coated material on aluminum foil, heating, rolling, slitting.