▎ 摘　　要

NOVELTY - The method involves preparing 5 to 12 mg of graphene oxide water dispersion liquid. The graphene oxide water dispersion liquid is added with 10 mg of graphene oxide to obtain mixed solution. The mixed solution is added with tin source that is selected from stannic chloride, stannous chloride or stannous sulfate material. Polyvinylpyrrolidone is added with 400 mg of tin source to stir to obtain mixed liquid. A vacuum drying process of a reaction product is performed. Heating process is performed at argon air temperature of 550 degrees Celsius. A final composite carbon film is obtained. USE - Method for manufacturing cathode tin oxide-graphene composite carbon film of a lithium-ion battery (claimed). ADVANTAGE - The method enables reducing external solvent and agent requirement and utilizing oxalic acid and polyvinylpyrrolidone of a reduction product to obtain stable size nano-granule. The method enables realizing microwave heating process to increase front system temperature in a rapid manner so as to prefer small size tin oxide granule in a better manner. The method enables distributing tin source on a uniform graphene oxide surface so as to improve tin oxide granule product distributing uniformity effect, so that graphene oxide and tin source component hydrolysis and reduction process can be controlled. The method enables simplifying cathode tin oxide-graphene composite carbon film manufacturing process. DESCRIPTION OF DRAWING(S) - The drawing shows a graph illustrating a method for manufacturing cathode tin oxide-graphene composite carbon film of lithium-ion battery.'(Drawing includes non-English language text)'