▎ 摘　　要

NOVELTY - Tin diselenide/tin oxide-reduced graphene oxide (RGO) nano composite negative electrode material is formed by stacking sheet-shaped reduced graphene oxide, and a sheet-shaped cubic diselenide/tin oxide composite material is embedded between the reduced graphene oxide sheets. USE - Tin diselenide/tin oxide-reduced graphene oxide (RGO) nano composite negative electrode material. ADVANTAGE - The tin diselenide/tin oxide-reduced graphene oxide (RGO) nano composite negative electrode material has high specific capacity, good cycle performance, excellent rate performance and stable structure. It is green and eco-friendly, cost-effective, simple process and short cycle, and suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing tin diselenide/tin oxide-rGO nanocomposite anode material, which involves: (A) dropping tin source alcohol solution into the graphene oxide aqueous solution, mixing uniformly, centrifuging, washing precipitate, and freeze-drying to obtain an intermediate powder; (B) adding obtained intermediate powder to the anhydrous alcohol solution, stirring it uniformly, dispersing it ultrasonically; (C) adding the selenium source and reducing agent, stirring it uniformly, putting it in a closed reaction kettle, and carrying out the solvothermal reaction, cooling to room temperature with the furnace, centrifuging, washing and drying precipitate to obtain the precursor; and (D) heat-treating obtained precursor in an inert atmosphere to obtain tin diselenide/tin oxide-rGO nanocomposite negative electrode material.