▎ 摘　　要

NOVELTY - Sulfur/MXene/graphene composite material comprises elemental sulfur, MXene and graphene, and the mass ratio of the elemental sulfur, MXene and graphene is 4-17:1-6:1. USE - Sulfur/MXene/graphene composite material used for lithium-sulfur battery for preparation of battery cathode materials (all claimed). ADVANTAGE - The sulfur/MXene/graphene composite material has high sulfur loading and good conductivity, and using as the cathode material of lithium-sulfur batteries can improve the conductivity of the cathode material and the utilization rate of active material sulfur, and absorbs the intermediate polysulfide produced in the reaction process, so as to avoid the shuttle effect caused by the dissolution of the intermediate polysulfide, and improves the specific energy and coulombic efficiency of the lithium-sulfur battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a sulfur/MXene/graphene composite material, which involves mixing and grinding the elemental sulfur, MXene, and graphene, and then preparing the sulfur/MXene/graphene composite material by a melt diffusion method.