▎ 摘　　要

NOVELTY - A tin dioxide-graphene cathode material preparing adding tin tetrachloride pentahydrate into a hydrochloric acid solution, stirring uniformly, and adding a graphene oxide-anhydrous ethanol dispersion, sonicating for 10-20 minutes to obtain a tin tetrachloride-graphene mixed solution, adding an alkali solution to the tin tetrachloride-graphene mixed solution, adjusting the pH of the mixed solution to 5-7, standing, aging and filtering to obtain a tin hydroxide graphene mixture, washing the tin hydroxide-graphene compound 3-5 times with absolute ethanol and deionized water, heating in an oven to 150-200 degrees C, keeping for 10-15 hours and grinding to obtain the finished product. USE - Method for preparing tin dioxide-graphene cathode material. ADVANTAGE - The method enables preparing tin dioxide-graphene cathode material with better electrochemical performance and wide market application prospect.