▎ 摘　　要

NOVELTY - The method comprises dissolving sodium hydroxide and tin source in water, stirring for 0.5-1 hour under ice bath condition, slowly adding zinc source aqueous solution while continuously stirring, taking a certain amount of graphene oxide (GO), quickly pouring into reaction container, continuously stirring for 12-24 hours under ice bath condition, then transferring to microwave reactor, setting power to 100-1000 W, raising the temperature to 110-300degrees Celsius, keeping the temperature for 2-20 hours to obtain turbid liquid, centrifuging, washing with deionized water and absolute ethyl alcohol, drying for 12-24 hours at 60-80degrees Celsius, obtaining precursor tin zinc hydroxide/reduced graphene oxide (ZnSn(OH)6/RGO), putting in tubular furnace under inert atmosphere, raising temperature to 300-600degrees Celsius at 2-20degrees Celsius/minutes, keeping the temperature for 2-10 hours to obtain the composite material. USE - Preparation method of zinc-tin oxide (ZnSnO3) nano rod/reduced graphene oxide (RGO) composite material used for lithium ion battery cathode material (claimed). ADVANTAGE - The ZnSnO3 nano-rod/RGO composite material has large specific surface area, uniform appearance, small size, high capacity and good cycle stability, and is applied to lithium ion battery cathode material. DETAILED DESCRIPTION - The method comprises dissolving sodium hydroxide and tin source in water, stirring for 0.5-1 hour under ice bath condition, slowly adding zinc source aqueous solution while continuously stirring, taking a certain amount of GO, quickly pouring into reaction container, continuously stirring for 12-24 hours under ice bath condition, then transferring to microwave reactor, setting power to 100-1000 W, raising the temperature to 110-300degrees Celsius, keeping the temperature for 2-20 hours to obtain turbid liquid, centrifuging, washing with deionized water and absolute ethyl alcohol, drying for 12-24 hours at 60-80degrees Celsius, obtaining precursor ZnSn(OH)6/RGO, putting in tubular furnace under inert atmosphere, raising temperature to 300-600degrees Celsius at 2-20degrees Celsius/minutes, keeping the temperature for 2-10 hours to obtain ZnSnO3 nano rod/RGO composite material. Diameter of the ZnSnO3 nano-rod is 3-5 nm. The tin source is tin dioxide, tin tetrachloride, and/or sodium stannate. The zinc source is zinc sulfate, zinc chloride, zinc carbonate, zinc nitrate, and/or zinc oxalate. The ratio the tin source and GO is 3.6mmol: (0.1-2) g. An INDEPENDENT CLAIM is also included for application of ZnSnO3 nano-rod/RGO composite material as cathode material of lithium ion battery.