▎ 摘　　要

NOVELTY - Preparation of electrode involves washing foamed nickel and soaking the foamed nickel into a graphene oxide aqueous solution to obtain graphene oxide-deposited foamed nickel, and forming positive electrode by carrying out constant-voltage electrochemical reaction using graphene oxide-deposited foamed nickel as a working electrode, a molybdenum electrode as auxiliary electrode and a saturated calomel electrode as a reference electrode and 0.1-1 mol/L sulfate as electrolyte solution and immersing the obtained electrode in an aqueous solution of carbon nanotubes and drying. USE - Preparation of electrode used for dissymmetric supercapacitor (claimed). ADVANTAGE - The method enables economical preparation of electrode under reduced energy consumption. The supercapacitor containing the electrode has improved energy density and high specific capacitance. DETAILED DESCRIPTION - Preparation of electrode involves washing foamed nickel and soaking the foamed nickel into a graphene oxide aqueous solution to obtain graphene oxide-deposited foamed nickel, and forming positive electrode by carrying out constant-voltage electrochemical reaction using graphene oxide-deposited foamed nickel as a working electrode, a molybdenum electrode as auxiliary electrode and a saturated calomel electrode as a reference electrode and 0.1-1 mol/L sulfate as electrolyte solution and immersing the obtained electrode in an aqueous solution of carbon nanotubes with concentration of 0.2-2 mg/ml and drying, or forming negative electrode by carrying out constant-voltage electrochemical reaction using graphene oxide-deposited foamed nickel as a working electrode, a molybdenum electrode as auxiliary electrode, a saturated calomel electrode as a reference electrode and 0.1-1 mol/L aqueous solution of manganese acetate as electrolyte solution and immersing the obtained electrode in an aqueous solution of manganese oxide. An INDEPENDENT CLAIM is included for dissymmetric supercapacitor.