▎ 摘　　要

NOVELTY - Preparing lithium iron phosphate anode material involves preparing intermediate material, phenolic compound, lithium iron phosphate precursor, oxidation graphene conductive liquid, mixing carbonate/bicarbonate compounds and functional additives, where mass concentration of obtained mixed solution of aldehyde compound is 1-5 wt.% in aqueous solution, and transferring into the reaction kettle, reacting at 100-200 degrees C under lower pressure of 1-5 megaPascal, reacting for 1-3 minutes, drying, crushing to obtain intermediate material, where mass ratio of lithium iron phosphate precursor, phenolic compound, aldehyde compound, oxidized graphene solid carbonate/bicarbonate compounds and functional additive is 500:10-50:50-100:1-10:1-10:0.5-2 and concentration of graphene oxide conductive liquid is 1-10 mg/mL. USE - Method for preparing lithium iron phosphate anode material. ADVANTAGE - The method enables to prepare lithium iron phosphate anode material improves conductivity of material and its specific capacity, multiplying power performance and circulation performance of lithium ion battery, is suitable for lithium ion battery, and has high specific energy density. DETAILED DESCRIPTION - The functional additive is selected from hydrazide compound, oxalic acid dihydrazide, malonic acid dihydrazide, glutaric acid dihydrazide, succinic gamabufotalin dihydrazide, adipic acid dihydrazide, maleic acid dihydrazide, fumaric acid dihydrazide, phthalic acid dihydrazide, terephthalic acid dihydrazide, isophthalic acid dihydrazide, pyromellitic acid dihydrazide, pyromellitic acid hydrazide and 1,2,4-benzene hydrazide, putting 100 pts. wt. intermediate material into 1000 ml 1-5 wt.% polyvinylpyrrolidone solution, then adding 0.5-5 pts. wt. catalyst, fully dispersing, performing spray drying and then transferring into tubular furnace under protection of hydrogen atmosphere, raising temperature to 750-850 degrees C, sintering for 1-12 hours, naturally cooling to room temperature, crushing to obtain lithium iron phosphate anode material, where catalyst is selected from potassium hydroxide, sodium hydroxide and zinc chloride.