Research Progress of Hydrogen Peroxide Production by Electrocatalytic Oxygen Reduction
Hydrogen peroxide(H2O2)is a kind of green and efficient oxidizer,which has been widely used in many industries.Among many synthesis methods,electrochemical oxygen reduction(ORR)is a novel,low energy consumption and clean method to produce H2O2.The reaction principle is that O2 under the action of the catalyst,a reduction reaction occurs,and two electrons are obtained to generate H2O2.Due to the competitive reaction of four-electron formation of H2O and two-electron formation of H2O2 in ORR,how to design and regulate the electrocatalyst to show high activity,high selectivity and high stability has become a research difficulty to be broken through.In this paper,the research progress of electrocatalytic ORR production of H2O2 was reviewed in detail based on different catalyst types.Finally,the current challenges of electrocatalytic ORR were summarized,and the future development direction was prospected.
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