Electrocatalytic oxygen reduction reaction(ORR)via two-electron pathway is a promising approach to decentralized and on-site hydrogen peroxide(H2O2)production beyond the traditional anthraquinone process.In recent years,electrochemical H2O2 production in acidic media has attracted increasing atten-tion owing to its stronger oxidizing capacity,superior stability,and higher compatibility with various applications.Here,recent advances of H2O2 electrosynthesis in acidic media are summarized.Specifically,fundamental aspects of two-electron ORR mechanism are firstly presented with an emphasis on the pH effect on catalytic performance.Major categories of promising electrocatalysts are then reviewed,including noble-metal-based materials,non-noble-metal single-atom catalysts,non-noble-metal compounds,and metal-free carbon-based materials.The innovative development of electrochem-ical devices and in situ/on-site application of electrogenerated H2O2 are also highlighted to bridge the gap between laboratory-scale fundamental research and practically relevant H2O2 electrosynthesis.Finally,critical perspectives on present challenges and promising opportunities for future research are provided.

Jun-Yu Zhang;Chuan Xia;Hao-Fan Wang;Cheng Tang

School of Chemical Engineering and Advanced Materials,The University of Adelaide,Adelaide,SA 5005,Australia;Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,Zhejiang,China;School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,Sichuan,China;AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory(ChEM-OIL),National Institute of Advanced Industrial Science and Technology(AIST),Sakyo-ku,Kyoto 606-8501,Japan

能源化学

[1]Jun-Yu Zhang;Chuan Xia;Hao-Fan Wang;Cheng Tang-.Recent advances in electrocatalytic oxygen reduction for on-site hydrogen peroxide synthesis in acidic media)[J].能源化学,2022(04):432-450

electrogenerated

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