▎ 摘　　要

NOVELTY - Tin dioxide-graphene composite material is dispersed in 50 ml dimethyl formamide, ultrasonically processed for 1 hour, and 4 ml concentrated hydrochloric acid and 0.05 ml aniline monomer are added in an ice bath under nitrogen condition. The resultant dark mixture is stirred for 10 minutes. 0.125 g Ammonium sulfate is added to 10 ml deionized water, and obtained ammonium persulfate solution is added to the dark mixture, centrifuged in ice bath under nitrogen atmosphere, washed, filtered and vacuum-dried, to obtain tin dioxide-graphene-polyaniline composite. USE - Preparation of tin dioxide-graphene-polyaniline composite used as cathode material for lithium sulfide battery (claimed) for electric vehicles and photovoltaic and wind power storage. ADVANTAGE - The lithium sulfide battery using tin dioxide-graphene-polyaniline composite has high capacity, durability and reliability. DETAILED DESCRIPTION - 1 g Tin tetrachloride pentahydrate and 50 ml deionized water are added to a Teflon reactor, reacted at 120-200 degrees C, heat-preserved for 28 hours, naturally cooled, and the reaction product is washed using deionized water and centrifuged. The obtained product is washed using ethanol, centrifuged, frozen and dried to obtain tin oxide powder having average particle size of 1-5 nm. Tin dioxide-graphene composite material is obtained by ultrasonically treating 20 ml 3 mg/ml graphene oxide dispersion for 10 minutes, weighing 80-200 mg tin dioxide powder, adding to 20 ml deionized water while stirring for 10 minutes, ultrasonically processed for 30 minutes, dripping to graphene oxide dispersion, mixing, ultrasonically processing for 30 minutes, magnetically stirring after 30 minutes, ultrasonically processing for 30 minutes, freeze-drying, lyophilizing, adding 40% hydrobromic acid, carrying out reduction reaction at 80 degrees C for 10-12 hours, washing using deionized water and ethanol, centrifuging and drying in vacuum at 60 degrees C for 6 hours. The obtained composite material is dispersed in 50 ml dimethyl formamide, ultrasonically processed for 1 hour, and 4 ml concentrated hydrochloric acid and 0.05 ml aniline monomer are added in an ice bath under nitrogen condition. The resultant dark mixture is stirred for 10 minutes. 0.125 g Ammonium sulfate is added to 10 ml deionized water, and obtained ammonium persulfate solution is added to the dark mixture, centrifuged in ice bath under nitrogen atmosphere, washed, filtered and vacuum-dried at 60 degrees C for 6 hours, to obtain tin dioxide-graphene-polyaniline composite. An INDEPENDENT CLAIM is included for application of tin dioxide-graphene-polyaniline composite as cathode for sodium sulfide battery.