Journal
NANO-MICRO LETTERS
Volume 15, Issue 1, Pages -Publisher
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/s40820-023-01067-9
Keywords
Hydrogen peroxide; Electrochemical synthesis; Electrocatalysts; Sustainable technologies
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A sustainable and cost-effective production of H2O2 via electrochemical oxygen reduction reaction is highly desired for various applications. Significant progress has been made in catalyst design and innovative cell designs for electrocatalytic production of H2O2. This review summarizes recent advances, including mechanistic explorations, theoretical computations, experimental evaluations, and perspectives on addressing remaining challenges.
An environmentally benign, sustainable, and cost-effective supply of H2O2 as a rapidly expanding consumption raw material is highly desired for chemical industries, medical treatment, and household disinfection. The electrocatalytic production route via electrochemical oxygen reduction reaction (ORR) offers a sustainable avenue for the on-site production of H2O2 from O-2 and H2O. The most crucial and innovative part of such technology lies in the availability of suitable electrocatalysts that promote two-electron (2e(-)) ORR. In recent years, tremendous progress has been achieved in designing efficient, robust, and cost-effective catalyst materials, including noble metals and their alloys, metal-free carbon-based materials, single-atom catalysts, and molecular catalysts. Meanwhile, innovative cell designs have significantly advanced electrochemical applications at the industrial level. This review summarizes fundamental basics and recent advances in H2O2 production via 2e(-)-ORR, including catalyst design, mechanistic explorations, theoretical computations, experimental evaluations, and electrochemical cell designs. Perspectives on addressing remaining challenges are also presented with an emphasis on the large-scale synthesis of H2O2 via the electrochemical route.
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