▎ 摘　　要

NOVELTY - Composite cathode material comprises sulfur-doped three-dimensional network structure conductive polymer/graphene/carbon nanotube composite carbon material, and vanadium tetrasulfide nanoparticles supported on the surface of the composite carbon material. The surface includes at least one of the outer surface of conductive polymer particles, the surface and interlayer of graphene, and the outer surface of carbon nanotubes. USE - Composite cathode material for zinc ion battery, preferably aqueous or organic rechargeable zinc ion battery (all claimed). ADVANTAGE - The composite cathode material has excellent conductivity, good cycle and rate performance, and has broad application prospects in zinc ion batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a composite cathode material, which involves: (A) adding sulfur powder and vanadyl acetylacetonate powder to N-N dimethylformamide, and sonicate under stirring conditions to obtain mixed solution A; (B) adding a sulfur-doped three-dimensional network structure conductive polymer/graphene/carbon nanotube composite carbon material to the mixed solution and sonicating with stirring to obtain mixed solution B; (C) transferring the mixed solution B into the reaction kettle, and performing a solvothermal reaction at 120-200 degrees C to obtain a hydrothermal product; and (D) subjecting hydrothermal product to microwave treatment at 300-800 degrees C under the protection of an inert atmosphere to obtain a composite cathode material.