期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 38, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202206544
关键词
Electrocatalysis; Hydrogen Peroxide; Nickel; Single-Atom Catalyst; Super Coordination Number
资金
- National Natural Science Foundation of China [22178104, 21838003, 91834301, 22008069]
- Shanghai Scientific and Technological Innovation Project [18JC1410500, 19JC1410400]
- Innovation Program of Shanghai Municipal Education Commission
- Fundamental Research Funds for the Central Universities [222201718002]
- Shanghai Sailing Program [20YF1410200]
The study synthesized a single-atom catalyst that can achieve high H2O2 production rates at high current densities, outperforming other reported catalysts in electrochemical synthesis.
Electrochemical production of hydrogen peroxide (H2O2) from O-2 on 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 NiN4 site. It has a cathodic energy efficiency of approximately 82 % and a H2O2 FE of around 96 % at 200 mA cm(-2) current density, outperforming the reported single-atom catalysts for H2O2 electrosynthesis.
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