▎ 摘　　要

NOVELTY - A method for modifying lithium iron manganese phosphate anode material, involves (1) uniformly stirring and mixing the lithium iron manganese phosphate anode material surface-coated with a carbon conductive network carbon layer and modified additive solution at room temperature, and drying to obtain precursor material, and (2) calcining the precursor material prepared in the step (1) under inert atmosphere at 300-600°C for 0.5-10 hours to obtain a final product, where the heteroatoms in the modified additive enter into three layers of carbon atoms on an outer surface of the conductive network carbon layer to achieve atomic-level doping. USE - Method for modifying lithium iron manganese phosphate anode material for power lithium ion battery. ADVANTAGE - The modification method effectively improves the electrochemical performance of the lithium iron manganese phosphate anode material. The prepared lithium iron manganese phosphate anode material has high energy density, and is prepared by simple process.