▎ 摘　　要

NOVELTY - Preparing graphene modified lithium-ion battery anode material comprises e.g. mixing mixed solution containing lithium salt, nickel salt and manganese salt with precipitating agent, adding complexing agent, adjusting the pH, filtering, washing and drying to obtain precursors, mixing the precursor with solvent to obtain mixture, then adding graphene, placing the mixture under ultrasonic mixing conditions to obtain mixture, preheating the mixture at 300-500 degrees C for 2-3 hours, and annealing at 200-500 degrees C for 30-35 hours to obtain final product. USE - The method is useful for preparing graphene modified lithium-ion battery anode material (claimed). ADVANTAGE - The graphene modified lithium-ion battery anode material has excellent high-temperature environment performance. DETAILED DESCRIPTION - Preparing graphene modified lithium-ion battery anode material comprises (i) mixing mixed solution containing lithium salt, nickel salt and manganese salt with precipitating agent, adding complexing agent, adjusting the pH to 6-8, filtering the reaction for 10-20 hours, washing the filtered precipitate and drying to obtain precursors, (ii) mixing the precursor obtained in step (i) with solvent to obtain mixture, then adding graphene, and placing the mixture under ultrasonic mixing conditions to obtain mixture, (iii) preheating the mixture obtained in step (ii) at 300-500 degrees C for 2-3 hours, then placing at 800-1000 degrees C for 10-15 hours under the conditions, and annealing at 200-500 degrees C for 30-35 hours to obtain final product. An INDEPENDENT CLAIM is also included for graphene modified lithium-ion battery anode material obtained by above method.