▎ 摘　　要

NOVELTY - 5-200 mg Graphene oxide is ultrasonically dispersed in 50 mL deionized water. Alcohol solution is added to graphene oxide dispersion, stirred, dispersed, carbon disulfide solution is added and stirred. Reaction mixture is added into a reactor, reacted, washed using alcohol and deionized water, and dried. Obtained material is immersed into a solution of 0.01-1 mol/L polymer monomer and 1 mol/L hydrochloric acid for 30 minutes, and treated using oxidant for 24 hours, to obtain polymer-coated graphene-sulfur composite material. USE - Preparation of polymer-coated graphene-sulfur composite material used as anode material for lithium ion battery. ADVANTAGE - The method enables preparation of polymer-coated graphene-sulfur composite material by simple process. The volume expansion and crushing of sulfur during charging and discharging process of lithium ion battery is prevented. DETAILED DESCRIPTION - 5-200 mg Graphene oxide is ultrasonically dispersed in 50 mL deionized water for 1-24 hours. Alcohol solution is added to 5-30 mL graphene oxide dispersion, stirred for 0.5-5 hours, dispersed, 3 mL of 5-100 mg/mL carbon disulfide solution is added and stirred for 1-10 hours. Reaction mixture is added into a reactor, reacted at 100-200 degrees C for 6-48 hours, washed using alcohol and deionized water for three times, and dried. Obtained material is immersed into a solution of 0.01-1 mol/L polymer monomer and 1 mol/L hydrochloric acid for 30 minutes, and treated using oxidant for 24 hours, to obtain polymer-coated graphene-sulfur composite material.