Abstract
AbstractElectrochemical production of hydrogen peroxide (H2O2) from O2on single‐atom catalysts has attracted great attention, yet the quest for robust catalysts is driven by achieving >90 % Faradaic efficiency (FE) under industrial‐relevant current densities (>100 mA cm−2). Herein we synthesize a catalyst that contains single nickel site coordinated by four nitrogen and two oxygen atoms (i.e., N4Ni1O2) via involving carboxyl functionalized multiwall carbon nanotubes as a substrate to provide extra O coordination to the regular NiN4site. It has a cathodic energy efficiency of approximately 82 % and a H2O2FE of around 96 % at 200 mA cm−2current density, outperforming the reported single‐atom catalysts for H2O2electrosynthesis.
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