▎ 摘　　要

NOVELTY - A composite anode material comprises lithium, nickel, manganese oxide, graphene and carbon nanotube, where the mass content of graphene is 0.1-20%, and mass ratio of graphene and carbon nanotube is 10:1 to 1:10. USE - Composite anode material. ADVANTAGE - The composite anode material has high capacity, and good performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing composite anode material, which involves weighting nickel, cobalt, manganese and acetic acid or nitrate, dissolving in deionized water, fully stirring the product to form 40-200 g/l stable solution or suspension, weighing lithium carbonate, adding to stable solution or suspension A, stirring for 1-3 hours under room temperature, heating the product at 85-95 degrees C for 4-6 hours, evaporating water by heating at 110-120 degrees C for 5-10 minutes, drying the product for 5-15 minutes, sintering the product at 800-950 degrees C for 4-20 hours, obtaining nickel cobalt lithium manganate anode material, forming 1-20 g/l solid suspension by graphene and carbon nanotube, then adding polyethylene pyrrolidone and surface active agent, subjecting to ultrasonic processing for 10-30 minutes, preparing stable suspension, followed by heating the product to 80-90 degrees C for 1-4 hours, evaporating to dryness, heating at 400-500 degrees C under inert atmosphere for 1-2 hours.