Electrosynthesized CuOx/graphene by a four-electrode electrolysis system for the oxygen reduction reaction to hydrogen peroxide

Abstract

Here a facile four-electrode electrolysis system is firstly applied to synthesize a CuO_x/graphene hybrid. The exfoliation of graphite via high electrolytic voltage and dissolution of copper via low electrolytic voltage are achieved simultaneously. CuO_x/G with the highest content of CuO_x shows superior electrocatalytic activity for oxygen reduction to hydrogen peroxide.