▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide coated sulfide/bimetal oxide composite material, comprises adding cobalt salt, iron salt, 2,5-dihydroxyterephthalic acid, polyvinylpyrrolidone and graphene oxide as raw materials into a sealed container, adding solvent to carry out the solvothermal reaction to generate cobalt-iron-graphene oxide complex, then mixing cobalt-iron-graphene oxide complex with sublimation sulfur and placing in a tube furnace, and calcining under sublimated sulfur and inert gas atmosphere to obtain final product. USE - The reduced graphene oxide coated sulfide/bimetal oxide composite material is useful as electrode material in supercapacitor energy storage material (claimed construction of supercapacitors). ADVANTAGE - The nanocomposite material has hierarchical porous sheet-type nano-flower structure. The constructed supercapacitor has high energy density and high power density, prolonged service life; and overcomes the difficulty of preparing traditional sulfide oxide composite materials; The method has characteristics of high energy consumption and low repeatability. DETAILED DESCRIPTION - Preparing reduced graphene oxide coated sulfide/bimetal oxide composite material, comprises adding cobalt salt, iron salt, 2,5-dihydroxyterephthalic acid, polyvinylpyrrolidone and graphene oxide as raw materials into a sealed container, adding solvent to carry out the solvothermal reaction to generate cobalt-iron-graphene oxide complex of formula (Co2.75Fe-MOF-74-GO), then mixing cobalt-iron-graphene oxide complex with sublimation sulfur and placing in a tube furnace, and calcining under sublimated sulfur and inert gas atmosphere to obtain final product. An INDEPENDENT CLAIM is also included for reduced graphene oxide coated sulfide/bimetal oxide composite material prepared by method.