▎ 摘　　要

NOVELTY - Preparing trivanadium tetrasulfide-carbon/graphite composite electrode material comprises (i) mixing the vanadium source, ascorbic acid and 1,4-benzene dicarboxylic acid and subjecting to a hydrothermal reaction to obtain a vanadium-based metal organic frame precursor, where the molar ratio of the vanadium source, ascorbic acid and 1,4-benzene dicarboxylic acid is 1:2:(4-12); (ii) placing the vanadium-based metal organic frame precursor and the excess sulfur source in a vacuum atmosphere, and calcining at 650-950℃ for 2-4 hours to obtain the intermediate trivanadium tetrasulfide-carbon; and (iii) carrying out ultrasonic and stirring treatment using single-layer graphene and trivanadium tetrasulfide-carbon, where the mass ratio of single-layer graphene and trivanadium tetrasulfide-carbon is: (1-3):10. The vanadium source is vanadium pentoxide. The sulfur source is thioacetamide. USE - The method is useful for preparing trivanadium tetrasulfide-carbon/graphite composite electrode material is useful as cathode material for magnesium-based battery (claimed). ADVANTAGE - The method prepares trivanadium tetrasulfide-carbon/graphite composite electrode material with nano-hierarchical structure, structural stability, regular shape, uniform particle size and high chemical performance, improved purity and reduced the synthesis cost.