▎ 摘　　要

NOVELTY - Preparation of graphene coated with sulfur ordered mesoporous carbon spherical composite material involves adding concentrated sulfuric acid to deionized water, heating at 36-40 degrees C, adding structure-directing agent, adding carbon source, stirring for 1.5-2.5 hours, adding templating agent ethyl orthosilicate, stirring for 10 minutes, standing at 36-40 degrees C for 28 hours, placing in reaction kettle, carrying out hydrothermal reaction at 105-115 degrees C for 26-30 hours, filtering, washing and oven drying at 110-120 degrees C for 7-9 hours. USE - Method for preparing graphene coated with sulfur ordered mesoporous carbon spherical composite material used as cathode material for lithium-sulfur battery (claimed). ADVANTAGE - The product has excellent electrochemical performance and good application prospect. DETAILED DESCRIPTION - Preparation of graphene coated with sulfur ordered mesoporous carbon spherical composite material comprises: (A) adding concentrated sulfuric acid to deionized water, heating at 36-40 degrees C, adding structure-directing agent, adding carbon source, stirring for 1.5-2.5 hours, adding templating agent ethyl orthosilicate, stirring for 10 minutes, standing at 36-40 degrees C for 28 hours, placing in reaction kettle, carrying out hydrothermal reaction at 105-115 degrees C for 26-30 hours, filtering, washing, oven drying at 110-120 degrees C for 7-9 hours, performing pre-carbonization to obtain composite, placing composite into carbonization furnace for carbonization, soaking with hydrofluoric acid, washing, drying and grinding to obtain ordered mesoporous carbon spheres; (B) mixing ordered mesoporous carbon spheres with elemental sulfur, heating at high temperature under vacuum and cooling to room temperature to obtain sulfur-containing ordered mesoporous carbon spheres; and (C) dispersing sulfur-containing ordered mesoporous carbon spheres in aqueous solution of cationic surfactant, magnetically stirring for 3-5 hours, centrifuging, adding to aqueous dispersion of graphene oxide, stirring for 3-5 hours, adding reducing agent, stirring for 10 hours, centrifuging, washing, drying under nitrogen atmosphere, treating dried product at 300 degrees C for 1-3 hours.