Metal single-site catalyst design for electrocatalytic production of hydrogen peroxide at industrial-relevant currents

Peike Cao, Xie Quan (), Xiaowa Nie, Kun Zhao, Yanming Liu, Shuo Chen, Hongtao Yu and Jingguang G. Chen ()
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Peike Cao: Dalian University of Technology
Xie Quan: Dalian University of Technology
Xiaowa Nie: Dalian University of Technology
Kun Zhao: North China Electric Power University
Yanming Liu: Dalian University of Technology
Shuo Chen: Dalian University of Technology
Hongtao Yu: Dalian University of Technology
Jingguang G. Chen: Columbia University

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Direct hydrogen peroxide (H2O2) electrosynthesis via the two-electron oxygen reduction reaction is a sustainable alternative to the traditional energy-intensive anthraquinone technology. However, high-performance and scalable electrocatalysts with industrial-relevant production rates remain to be challenging, partially due to insufficient atomic level understanding in catalyst design. Here we utilize theoretical approaches to identify transition-metal single-site catalysts for two-electron oxygen reduction using the *OOH binding energy as a descriptor. The theoretical predictions are then used as guidance to synthesize the desired cobalt single-site catalyst with a O-modified Co-(pyrrolic N)4 configuration that can achieve industrial-relevant current densities up to 300 mA cm−2 with 96–100% Faradaic efficiencies for H2O2 production at a record rate of 11,527 mmol h−1 gcat−1. Here, we show the feasibility and versatility of metal single-site catalyst design using various commercial carbon and cobalt phthalocyanine as starting materials and the high applicability for H2O2 electrosynthesis in acidic, neutral and alkaline electrolytes.

Date: 2023
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DOI: 10.1038/s41467-023-35839-z

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