▎ 摘　　要

NOVELTY - A negative electrode material preparation method involves adding graphene oxide dispersion to organic solvent, adjusting pH to obtain graphene oxide buffer, adding soluble compound containing pyrophosphate to the graphene oxide buffer for performing ultrasonic dissolution, obtaining pyrophosphate solution containing graphene oxide buffer, uniformly dissolving soluble nickel salt in organic solvent to obtain nickel salt solution, uniformly mixing the pyrophosphate solution containing graphene oxide buffer and the nickel salt solution, stirring, reacting, washing obtained product, drying and sintering. USE - Method for preparing negative electrode material that is utilized for lithium-ion battery energy storage system and energy materials. ADVANTAGE - The method enables preparing negative electrode material with high purity and better electrochemical performance in a simple manner at low cost by utilizing graphene oxide buffer, such that providing nucleation sites and accelerating nucleation.