▎ 摘　　要

NOVELTY - Preparing lithium battery anode material comprises (i) adding lithium source, cobalt source, manganese source, nickel source, gallium source, antimony source, tellurium source and ethylene glycol in water, dripping sodium acetate, washing with deionized water and absolute ethyl alcohol, cooling to room temperature and grinding to obtain bulk-doped porous nickel-cobalt lithium manganese oxide, (ii) primary modification by dispersing bulk-doped porous nickel-cobalt lithium manganese oxide in water, adding citric acid, selenium source, rare earth source and zinc source, reacting until the solution becomes gel-shaped, and calcining, and grinding to obtain a primary modified bulk-phase doped porous nickel cobalt lithium manganese oxide, and (iii) secondary modification of graphene by dispersing graphene oxide in water, adding primary modified bulk-phase doped porous nickel cobalt lithium manganese oxide, ultrasonically dispersing to obtain uniform suspension, drying and thermally reducing. USE - The method is useful for preparing lithium battery anode material. ADVANTAGE - The material: has excellent cycle performance, high capacity retention rate, excellent structural stability, and sufficient lithium-ion deembedding rate and mobility. DETAILED DESCRIPTION - Preparing lithium battery anode material comprises (i) preparing bulk-doped porous nickel cobalt lithium manganese oxide by adding lithium source, cobalt source, manganese source, nickel source, gallium source, antimony source, tellurium source and ethylene glycol into water, stirring for 0.5-1 hour, dripping sodium acetate, acutely stirring for 1.5-3.5 hours, placing in a polytetrafluoroethylene-lined hydrothermal reaction kettle, reacting at 195-220°C for 15-20 hours, cooling to room temperature, washing with deionized water and absolute ethyl alcohol respectively, drying in vacuum, pre-burning at a constant temperature in a muffle furnace at 350-450°C for 2-4 hours, cooling to room temperature, grinding and calcining in a muffle furnace at 800-900°C for 18-24 hours, cooling to room temperature, and grinding through a 100-300 meshes sieve to obtain bulk-doped porous nickel-cobalt lithium manganese oxide, (ii) primary modification by dispersing bulk-doped porous nickel-cobalt lithium manganese oxide prepared in the step (i) in water, adding citric acid, selenium source, rare earth source and zinc source, reacting in a water bath at 78-86°C until the solution becomes gel-shaped, drying, grinding and calcining in a muffle furnace at 770-880°C for 4-7 hours, cooling, taking out and grinding through a 150-300 meshes sieve to obtain a primary modified bulk-phase doped porous nickel cobalt lithium manganese oxide, and (iii) secondary modification of graphene by dispersing graphene oxide in water, adding primary modified bulk-phase doped porous nickel cobalt lithium manganese oxide prepared in the step (ii), using an ultrasonic device to ultrasonically disperse for 12-20 minutes to obtain a uniform suspension, then filtering, drying and thermally reducing in sequence to obtain the finished product. An INDEPENDENT CLAIM is also included for a lithium battery anode material prepared by the above-mentioned method.