▎ 摘　　要

NOVELTY - Preparing porous carbon-graphene loaded sulfur composite material comprises (a) preparing three-dimensional reduced graphene oxide; (b) placing carbon source in deionized water, stirring uniformly to obtain soaking liquid, immersing three-dimensional reduced graphene oxide prepared in step (a) in soaking solution and taking three-dimensional reduced graphene oxide out, freezing, freeze-drying and roasting in an inert atmosphere to obtain porous carbon-reduced graphene oxide; and (c) mixing porous carbon-reduced graphene oxide prepared in step (b) uniformly with sulfur powder and heating smoked sulfur under an inert atmosphere. USE - The porous carbon-graphene loaded sulfur composite material is useful for producing cathode of lithium-sulfur battery (claimed). ADVANTAGE - The composite material: has high specific surface area, provides a large number of load sites and improves cycle stability of lithium-sulfur battery; and method is simple, requires low production equipment, has wide source of raw materials, is economical and can be mass-produced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for porous carbon-graphene loaded sulfur composite material, prepared by above mentioned method.