▎ 摘　　要

NOVELTY - Preparing high quality graphene foil current collector comprises e.g. (i) ultrasonically cleaning nickel foil with ethanol and acetone solution and then placing in chemical vapor deposition system containing methane, argon and hydrogen, reacting, cooling and depositing on the nickel foil to obtain graphene foil, (ii) transferring nickel foil loaded with graphene foil into mixed solution of hydrochloric acid and ferric chloride, then the nickel foil to etched completely to obtain graphene foil, then washing and drying to obtain final product. USE - The method is useful for preparing high quality graphene foil current collector (claimed). ADVANTAGE - The method: has simple preparation process, mild reaction conditions and is suitable for industrial production. DETAILED DESCRIPTION - Preparing high quality graphene foil current collector comprises (i) ultrasonically cleaning nickel foil having a thickness of 30-50 mu m with ethanol and acetone solution and then placing in chemical vapor deposition system containing methane, argon and hydrogen, and reacting at 950-1100 degrees C for 3-9 hours, cooling and depositing on the nickel foil to graphene foil, (ii) transferring nickel foil loaded with graphene foil into mixed solution of hydrochloric acid and ferric chloride, then the nickel foil to etched completely to obtain graphene foil, then washing and drying to obtain final product, where In step (i), the methane flow rate is 2.25-9 standard cubic centimeter/minute, the argon gas flow rate is 150-250 standard cubic centimeter/minute, the hydrogen gas flow rate is 20-30 standard cubic centimeter/minute; and in step (ii), the concentration of hydrochloric acid is 0.5-2 mol/l and the concentration of ferric chloride is 1-3 mol/l in the mixed solution.