Abstract: High quality and continuous graphene was synthesized on Cu foil using the method of atmospheric pressure chemical vapor deposition.The corrosion resistances of pure Cu foil and graphene/Cu specimen were tested in 0.1 mol/L NaCl by potentiodynamic polarization and electrochemical impedance spectroscopy techniques.Compared with pure Cu foil, the corrosion potential of graphene/Cu moves 0.114 V towards the positive direction, but the current density of graphene/Cu decreases by an order of magnitude.And the polarization resistance of graphene/Cu is 4.4 times higher than that of pure Cu foil.The value of impedance modulus increases by about one order of magnitude.All of these results demonstrate that high quality and continuous graphene can inhibit the redox reaction occurring on the Cu foil in the electrolyte, which can increase the corrosion resistance of Cu foil and protect Cu foil from the corrosion effectively.

Key words: High quality and continuous graphene was synthesized on Cu foil using the method of atmospheric pressure chemical vapor deposition.The corrosion resistances of pure Cu foil and graphene/Cu specimen were tested in 0.1 mol/L NaCl by potentiodynamic polarization and electrochemical impedance spectroscopy techniques.Compared with pure Cu foil, the corrosion potential of graphene/Cu moves 0.114 V towards the positive direction, but the current density of graphene/Cu decreases by an order of magnitude.And the polarization resistance of graphene/Cu is 4.4 times higher than that of pure Cu foil.The value of impedance modulus increases by about one order of magnitude.All of these results demonstrate that high quality and continuous graphene can inhibit the redox reaction occurring on the Cu foil in the electrolyte, which can increase the corrosion resistance of Cu foil and protect Cu foil from the corrosion effectively.