▎ 摘　　要

NOVELTY - A preparation method of tin(II) sulfide-tin(IV) sulfide loaded graphene oxide heterogeneous structure composite material, involves mixing (A) solution and (B) solution, adding surfactant, and mixing uniformly to obtain (D) solution, adding (C) solution into the (D) solution, reacting tin and sulfur to obtain (E) solution, hydrothermally reacting the (E) solution, filtering, washing, and drying to obtain a final product, where the (A) solution is prepared by dissolving tin source and reducing acid in alcohol solvent until the tin source is completely dissolved, the (A) solution is acidic, (B) solution is graphene dispersion liquid, and (C) solution is obtained by dissolving sulfur source in glycol. USE - Preparation method of tin(II) sulfide-tin(IV) sulfide loaded graphene oxide heterogeneous structure composite material for use as negative material of sodium ion battery (claimed). ADVANTAGE - The tin(II) sulfide-tin(IV) sulfide loaded graphene oxide heterogeneous structure composite material has excellent cycle performance and less capacity attenuation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: 1.a tin(II) sulfide-tin(IV) sulfide loaded graphene oxide heterogeneous structure composite material which comprises graphene oxide, tin and sulfur in a molar ratio of (0.8-1.2):(0.8-1.2):1; and 2.an application of tin(II) sulfide-tin(IV) sulfide loaded graphene oxide heterogeneous structure composite material as negative material of sodium ion battery.