Electron Donor–Acceptor Activated Anti-Fenton Property for the Ultradurable Oxygen Reduction Reaction

Iron–nitrogen–carbon (Fe–N–C) materials are recognized as an effective category of catalysts that do not contain platinum (Pt) for the oxygen reduction reaction (ORR). Nonetheless, the long-term stability and effectiveness of these materials are significantly hindered by the dissolution and oxidation of Fe atoms. Microstructural engineering of Fe–N–C is a viable approach to enhancing ORR activity and stability. Herein, CuN5-single-atom nanozymes (SAzyme)-assisted Fe–N5 catalysts (SA–Fe–N5) were developed by introducing single-atom Cu to enhance Fe–N–C catalyst ORR performance. Electrochemical assessments indicated that SA–Fe–N5 exhibited excellent ORR activity in alkaline solutions, with a half-wave potential…

• NN
  National Natural Science Foundation of China

  Awards: 22302013, 22271018, 22309012
• NS
  Natural Science Foundation of Guangdong Province

  Awards: 2023A1515010554, 2024A1515010307