▎ 摘　　要

NOVELTY - Method for preparing vanadium sulfide/multi-porous graphitized carbon composite material involves providing multi-porous graphitized carbon, modifying the multi-porous graphitized carbon, dispersing the multi-porous graphitized carbon in a strong acid solution, connecting the hierarchical pore graphitized carbon with a carboxyl group or dispersing the hierarchical pore graphitized carbon in a strong alkali solution to connect the hierarchical pore graphitized carbon with a hydroxyl group to obtaining modified multi-porous graphitized carbon, drying the modified multi-porous graphitized carbon after cleaning to neutral, supporting vanadium sulfide, dispersing the modified hierarchical pore graphitized carbon in a solvent, adding a vanadium source and a sulfur source, and performing second hydrothermal reaction to prepare the product. USE - The method is useful for preparing vanadium sulfide/multi-porous graphitized carbon composite material, which is used in lithium-sulfur battery positive electrode material for lithium-sulfur battery positive electrode sheet, which is used in lithium-sulfur battery cell for lithium-sulfur battery pack for drone, portable equipment and energy electric vehicle (all claimed). ADVANTAGE - The method is simple, has high yield and excellent electrochemical performance when used in lithium-sulfur battery, uses vanadium sulfide which has excellent conductivity, accelerates the kinetics of the reaction and inhibits the shuttle of polysulfide, and improves the cycle stability of lithium-sulfur battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the vanadium sulfide/multi-porous graphitized carbon composite material prepared by the above method; (2) a lithium-sulfur battery positive electrode material, comprising 10-39 wt.% vanadium sulfide/multi-porous graphitized carbon composite material, 60-80 wt.% sulfur, 5-10 wt.% conductive agent and 5-10 wt.% adhesive; (3) a lithium-sulfur battery positive electrode sheet, comprising positive electrode current collector and lithium-sulfur battery positive electrode material, where the lithium-sulfur battery positive electrode material is placed on one or both sides of the positive electrode current collector, the lithium-sulfur battery positive electrode material is above-mentioned positive electrode material; and (4) a lithium-sulfur battery cell, comprising positive electrode sheet, negative electrode sheet, isolation film which is placed between the negative electrode sheet and the positive electrode sheet, and packaging bag made of aluminum-plastic film composite material, where the bare cell made of the negative electrode sheet, the positive electrode sheet and the isolation film is placed in the packaging bag.