▎ 摘　　要

NOVELTY - An anode material has a porous structure of lithium iron phosphate/carbon composite (I). USE - Anode material. ADVANTAGE - The raw materials greatly reduces the production cost. The method directly synthesizes the lithium iron phosphate material through selection of raw materials and optimization of the synthesis process, and realizes doping of nitrogen and coating of carbon. DETAILED DESCRIPTION - An anode material has a porous structure of lithium iron phosphate/carbon composite of formula: LixFeyNzPO4/C (I). x=more than 1 and less than 1.23; y=more than 0.95 and less than 0.98; z=more than 0.05 and less than 0.20; and x/y=1.05-1.25. An INDEPENDENT CLAIM is included for preparation of the anode material, which involves: (a) adding phosphoric acid solution to reaction kettle, adding iron powder, additives and hydrogen peroxide for reaction, and controlling pH value of the reaction system to 2-4 during reaction, when the reaction system is light red, continue the reaction for 1-2 hours and stop the reaction, to obtain a first suspension, where the additive is Pluronic (RTM: polyethylene glycole(PEG)-polypropylene glycole(PPG)-polyethylene glycole(PEG) block copolymer) P123 and polyethylene glycol; (b) mixing lithium phosphate or a mixture of lithium phosphate and lithium carbonate, ferric nitrate and carbon source, and grinding in a grinder to obtain second slurry; (c) adding second slurry to first suspension for reaction to obtain third slurry; and (d) spray-drying third slurry, and subjecting to sintering treatment, pulverization and classification.