▎ 摘　　要

NOVELTY - A metal/molybdenum disulfide graphene composite material preparing method involves preparing metal/molybdenum disulfide intercalation compound, and preparing metal/molybdenum disulfide/graphene composite material. The obtained powder is dispersed, and mixed with potassium permanganate, followed by stirring hydrogen peroxide solution, centrifuging and washing to obtain graphene oxide, which is dispersed and added with cetyltrimethylammonium bromide cationic surfactant, intercalation compound, and reducing agent, and centrifuged to collect solid product, which is washed, dried and heat-treated. USE - Method for preparing metal/molybdenum disulfide (M2+/MoS2) graphene composite material that is utilized as lithium ion battery cathode material (claimed). ADVANTAGE - The method enables preparing the material with better electromagnetism property, large specific surface area, a high conductivity, high chemical stability and excellent physical chemical property, and enhanced specific capacity and circulation of the lithium ion battery. DETAILED DESCRIPTION - A metal/molybdenum disulfide (M2+/MoS2) graphene composite material preparing method involves preparing metal/molybdenum disulfide (M2+/MoS2) intercalation compound by taking 2.56-3.0 g molybdenum disulfide in a stoppered glass bottle, adding 10-20 ml or 1.6 mol/l n-hexane solution of n-butyl lithium, sealing and oscillating to obtain mixture. The mixture is allowed to stand at room temperature for 8 days to obtain black lithium molybdenum disulfide powder, followed by removing supernatant, rinsing using n-hexane, and drying in vacuum by using a vacuum desiccator to obtain a dark lithium molybdenum disulfide powder. The 0.5-1 g powder is transferred in 50 ml PTFE-lined autoclave to react with 30 ml or 0.2 mol/l M2+ salt solution, at 160 degrees C for 48 hours to obtain reacted product. The reacted product is filtered, rinsed with deionized water, and dried in an oven at 80 degrees C to obtain metal/molybdenum disulfide (M2+/MoS2) intercalation compound, followed by preparing metal/molybdenum disulfide (M2+/MoS2)/graphene composite material by using oxidation and improved Hummer process for preparing graphene. The 0.065-0.13 g obtained powder is dispersed by stirring into 30 ml concentrated sulfuric acid in an ice bath at 0 degrees C. The resultant powder is mixed with potassium permanganate at a mass ratio of 4:1 for 50 minutes, followed by adding and stirring 50 ml deionized water, when the temperature is raised to 35 degrees C, stirring 15 ml or 30 mass% hydrogen peroxide solution for 30 minutes, centrifuging, and washing with 5 mass% hydrochloric acid solution, deionized water and acetone to obtain graphene oxide. The 0.065-0.13 g graphene oxide is dispersed ultrasonically in 200 ml deionized water, followed by adding 0.05 mol/l or 200 ml cetyltrimethylammonium bromide cationic surfactant, 1.18-2.83 g intercalation compound, 20-30 ml reducing agent, continuously stirring and heating to 90-95 degrees C under constant stirring and under reflux conditions to carry out reaction for 5 hours to reduce graphene oxide to graphene to obtain reacted product, which is centrifuged to collect solid product. The solid product is washed with deionized water and dried in vacuum at 40-100 degrees C for 10-24 hours. The resultant solid product is heat-treated in a nitrogen/hydrogen mixed atmosphere at 800 degrees C for 2 hours to obtain a finished product, where the reducing agent is 85 mass% hydrazine hydrate solution or 0.1 mol/l L-half cystine or 0.05 mol/l sodium citrate, and the concentration of the hydrogen mixed gas is 10% and the molar ratio of the metal/molybdenum sulfide (M2+/MoS2) and graphene oxide is 1:0.5-1. An INDEPENDENT CLAIM is also included for a graphene metal/molybdenum disulfide graphene composite material prepared by the method.