▎ 摘　　要

NOVELTY - Preparing multi-level structure tetraoxide antimony graphene composite material involves adding 1-1 mmol of antimony tartrate into 50-70mL of uniformly dispersed graphene oxide aqueous solution with concentration of 1-2mol/L, and stirring to obtain the mixed solution. The pH of the mixed solution is adjusted to 3-9, then performed hydrothermal reaction at 160-200 degrees C for 8-20 hours, after finishing reaction, cooled to room temperature, washed and separated precipitate. The precipitate is frozen and dried, when the pH of the mixed solution is 3-6, obtaining the rod-shaped diantimony tetraoxide graphene composite material, and when the pH of the mixed solution is 7-9, obtaining the flower-shaped diantimony oxide graphene composite material. USE - Method for preparing multi-level structure tetraoxide antimony graphene composite material used as cathode material of sodium-ion battery (claimed). ADVANTAGE - The method enables to prepare composite material has excellent performance as the sodium ion battery cathode material.