▎ 摘　　要

NOVELTY - Preparing sulfur-rich polymer porous carbon nano cage composite material comprises (i) heating sublimed sulfur under inert gas protection to obtain orange red solution, adding alkenyl modifier, continuously stirring, reacting, and cooling to obtain sulfur-rich polymer solution; (ii) dissolving nano carbon base material in tris(hydroxymethyl)aminomethane solution, stirring, reacting, cooling, adding nickel salt and cobalt salt dissolved in mixed solution of ethanol and water, adding sulfur source in mixed solution, dissolving, sealing mixed solution, reacting, cooling, washing the solid, and drying to obtain nickel cobalt sulfide (NiCo2S4)-porous carbon nano cage material; and (iii) slowly adding NiCo2S4-porous carbon nano cage material to sulfur-rich polymer solution, stirring, synthesizing sulfur-rich polymers by interfacial polymerization and packaging sulfur-rich polymers into channels of NiCo2S4-porous carbon nano cage, cooling, repeatedly cleaning and ultrasonically dispersing. USE - The nano cage composite material is useful in lithium-sulfur battery (claimed). ADVANTAGE - The composite material: utilizes carbon nano cage material having high conductivity to improve the conductivity of the material; uses carbon-sulfur bond formed in sulfur-rich polymer to chemically fix sulfur; regulates the carbon nano cage structure to control and package sulfur-rich polymers to limit the production of long-chain polysulfides; exhibits synergistic effect between the two materials in graphene oxide, polydopamine and transition metal carbide, while achieving their respective effects; and constructs high-performance lithium-sulfur battery. DETAILED DESCRIPTION - Preparing sulfur-rich polymer porous carbon nano cage composite material comprises (i) heating sublimed sulfur under inert gas protection to obtain orange red solution, adding alkenyl modifier, continuously stirring, reacting, and cooling to room temperature to obtain sulfur-rich polymer solution; (ii) dissolving nano carbon base material in tris(hydroxymethyl)aminomethane solution, continuously stirring, reacting, cooling to room temperature, adding nickel salt and cobalt salt according to specific mol ratio dissolved in mixed solution of ethanol and water, adding sulfur source in the mixed solution, ultrasonic to fully dissolve, sealing the mixed solution and placing in oven to react, then cooling to room temperature, washing the solid with absolute ethanol, concentrated hydrochloric acid and deionized water in order, and drying to obtain nickel cobalt sulfide (NiCo2S4)-porous carbon nano cage material; and (iii) slowly adding NiCo2S4-porous carbon nano cage material to sulfur-rich polymer solution, fully stirring, adjusting the reaction temperature, continuously stirring, synthesizing sulfur-rich polymers by interfacial polymerization and packaging sulfur-rich polymers into channels of NiCo2S4-porous carbon nano cage, then cooling to room temperature, and repeatedly cleaning and ultrasonic dispersing by carbon disulfide. An INDEPENDENT CLAIM is also included for use method of the sulfur-rich polymer porous carbon nano-cage composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of preparing sulfur-rich polymer/NiCo2S4-multi-stage porous carbon nano cage (Drawing includes non-English language text).