▎ 摘　　要

NOVELTY - Electrostatic self-assembled three-dimensional flower-shaped cobalt disulfide/rGO (reduced graphene oxide) composite material is a mixture of soluble cobalt salt aqueous solution, and vulcanizing agent aqueous solution is heated at 150-280 degrees C, then filtering and drying to obtain three-dimensional flower-shaped cobalt disulfide, then adding into polydiallyldimethylammonium chloride solution, stirring, centrifugally washing to obtain positively charged flower-shaped cobalt disulfide, adding to graphene oxide (GO) aqueous solution, stirring, allowing to stand, centrifugally washing, freeze-drying to obtain solid, then heating at 500-700 degrees C, and calcining under a protective atmosphere, is claimed. USE - The cobalt disulfide/rGO composite material is useful in lithium ion battery anode materials, or sodium ion batteries/catalytic ORE field (claimed). ADVANTAGE - The composite material: self-assembles cobalt disulfide having three-dimensional flower-shape on rGO nanosheet substrate by electrostatic action; accommodates volume effect of cobalt disulfide during charging, and discharging; and has excellent electrical conductivity, excellent charge, discharge cycle performance, rate performance, and high first coulombic efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing electrostatic self-assembled three-dimensional flower-shaped cobalt disulfide/rGO composite material, comprising (i) dissolving soluble cobalt salt, and vulcanizing agent in deionized water to obtain solution A and solution B, (ii) adding solution A to solution B, mixing, and stirring uniformly to obtain solution C, (iii) heating the solution C at 150-280 degrees C, cooling, filtering, and drying to obtain solid D, (iv) adding solid D to polydiallyldimethylammonium chloride solution, stirring, and centrifuging to obtain solid E, (v) adding the solid E to graphene oxide aqueous solution, stirring, then allowing to stand, centrifuging, and then freeze-drying to obtain solid F, and (vi) heating solid F at 500-700 degrees C under the protective atmosphere, and calcining to obtain the finished product.