▎ 摘　　要

NOVELTY - Method for preparing a negative electrode material for a lithium ion battery, involves (a) preparing a nickel salt solution, (b) adding a bio-template absorbent cotton to the completely dissolved nickel salt solution, soaking for 4-8 hours, and blast drying to obtain an absorbent cotton precursor, (c) calcining the absorbent cotton precursor in an air atmosphere to obtain a pure phase nickel oxide, (d) taking the pure phase nickel oxide as a precursor, adding it to a graphene oxide solution, heating and stirring at 40-75 degrees C, evaporating and crystallizing to obtain a nickel oxide/graphene oxide composite material, and (e) air-drying the nickel oxide/graphene oxide composite material. USE - The method is used for preparing a negative electrode material for a lithium ion battery (claimed). ADVANTAGE - The method is cost-effective and simple, has strong operability, and provides excellent electrochemical performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the negative electrode material for lithium ion battery prepared by the above-mentioned method, which comprises a nickel oxide-graphene oxide hollow tubular composite material, where the negative electrode material comprises a hollow tubular nickel oxide layer and a carbon coating layer; and (2) the application of the negative electrode material for lithium ion battery prepared by the preparation method, which comprises mixing the obtained negative electrode material with acetylene black and binder polyvinylidene fluoride in a ratio of 7:2:1, taking 1-methyl-2-pyrrolidone NMP as a solvent and stirring for 5 hours to form a uniform slurry, uniformly coating the slurry on the copper foil and placing in a vacuum oven, drying at 120 degrees C for 48 hours, where the mass of the active material loaded on each electrode is 2-3 mg/cm2.