▎ 摘　　要

NOVELTY - Positive electrode skeleton material is UIO-66 and graphene, and the graphene wraps UIO-66. The positive electrode skeleton material wraps UIO-66 with a particle size of 400-600 nanometer, and the mass ratio of graphene to UIO-66 is 1:5. USE - Positive electrode skeleton material used for a lithium-sulfur battery (claimed). ADVANTAGE - The positive electrode skeleton material can support the positive electrode sulfur element, can suppress the shuttle effect caused by the pure sulfur positive electrode, the volume expansion when the sulfur is converted to lithium sulfide, and the poor conductivity of the sulfur itself, etc., and improve the performance of the lithium-sulfur battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing a positive electrode skeleton material of a lithium-sulfur battery, which involves mixing zirconium chloride, terephthalic acid, N,N'-dimethylformamide and glacial acetic acid to obtain a mixed solution, where the molar ratio of zirconium chloride, terephthalic acid, N,N'-dimethylformamide and glacial acetic acid is 1:1:250-400:70-90; subjecting mixed solution to a hydrothermal reaction at 115-130 degrees C for 20-30 hours, and then washing and drying to obtain a white powder, namely UIO-66; adding the white powder and graphene solution to water, performing ultrasonic dispersion, stirring and mixing, and then spray-drying to obtain graphene-coated material, which is the positive electrode skeleton material of lithium-sulfur battery; and adding 0.5-1.5 g white powder per liter of water, and mass ratio graphene and UIO-66 is 1:5, and spray drying requires an inlet air volume of 100%, an inlet air temperature of 170-200 degrees C, a feed volume of 5-10 ml, and a needle frequency of 3-8 seconds; and (2) a method for preparing lithium-sulfur battery, which involves mixing sulfur with positive electrode skeleton material, and melting under an argon atmosphere at 150-160 degrees C for 10-15 hours to obtain a lithium sulfur battery cathode material, and the mass ratio of sulfur and positive electrode skeleton material is 2-5:1.