▎ 摘　　要

NOVELTY - The preparation of nanocomposite material involves carrying out hydrothermal process, dispersing oxidized graphite in water to obtain oxidized graphene solution, adding to sulfuric acid, dispersing, transferring the mixture to kettle, obtaining three-dimensional reductive graphene oxide, reacting, dissolving reducing agent and thiosulfate salt successively in solvent, obtaining mixed solution, soaking reduced graphene oxide into mixed solution, transferring mixed solution and three-dimensional columnar reductive graphene oxide into reactor, reacting, washing the product and drying. USE - Preparation method of sulfur/graphene nanocomposite material used for anode of lithium ion battery (claimed). ADVANTAGE - The nanocomposite material increases the stability of the material and has excellent cycle stability and high specific energy density. DETAILED DESCRIPTION - The preparation method of sulfur/graphene nanocomposite material involves carrying out hydrothermal process, dispersing oxidized graphite in water to obtain oxidized graphene solution, adding to sulfuric acid, ultrasonically dispersing the obtained mixed solution, transferring the mixture to reaction kettle at 160-260 degrees C for 18-30 hours, taking out, obtaining dimensional reductive graphene oxide, reacting at 190-220 degrees C for 20-24 hours, dissolving reducing agent and thiosulfate salt successively in solvent, obtaining mixed solution, soaking three-dimensional columnar reduced graphene oxide into mixed solution at 3-50 degrees C for more than 1 day, preferably 10-30 degrees C for 2-3 days, transferring mixed solution and three-dimensional columnar reductive graphene oxide into a hydrothermal reactor, reacting at 80-120 degrees C for 18-30 hours, preferably 90-110 degrees C for 20-24 hours, and washing and drying the product. An INDEPENDENT CLAIM is included for the anode of lithium ion battery.