▎ 摘　　要

NOVELTY - The production of manganese sulfide/graphene nano composite material involves carrying out hydrothermal process, dispersing oxidized graphite in water to obtain oxidized graphene solution, adding to sulfuric acid, dispersing, transferring mixture to kettle, obtaining three-dimensional reductive graphene oxide, reacting, dissolving manganese salt and sulfur source in solvent, obtaining mixed solution, soaking reduced graphene oxide into mixed solution, transferring mixed solution and reductive graphene oxide into hydrothermal reactor, reacting, washing and drying the product. USE - Production of manganese sulfide/graphene nanocomposite material used for anode of lithium ion battery (claimed). ADVANTAGE - The method improves the performance of lithium-ion batteries and ensures excellent cycle stability and high specific energy density of the nanocomposite material. DETAILED DESCRIPTION - The preparation method of sulfur/graphene nano composite 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 three-dimensional reductive graphene oxide, reacting at 190-220 degrees C for 20-24 hours, dissolving manganese salt and sulfur source in solvent, obtaining mixed solution, soaking three-dimensional columnar reduced graphene oxide into mixed solution at 3-50 degrees C for greater than or equal to 1 day, preferably 10-30 degrees C for 1-2 days, transferring mixed solution and three-dimensional columnar reductive graphene oxide into a hydrothermal reactor, reacting at 160-240 degrees C for 18-30 hours, preferably 180-200 degrees C for 20-24 hours, and washing and drying the product. INDEPENDENT CLAIMS are included for the following: (1) an anode of lithium ion battery; and (2) the lithium ion battery.