Electron Donor–Acceptor Activated Anti-Fenton Property for the Ultradurable Oxygen Reduction Reaction DOI
Haomin Jiang, Jiayue He, Shaobing Zhou

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

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, long-term stability and effectiveness these significantly hindered by dissolution oxidation Fe atoms. Microstructural engineering Fe–N–C is a viable approach to enhancing ORR activity stability. Herein, CuN5-single-atom nanozymes (SAzyme)-assisted Fe–N5 (SA–Fe–N5) were developed introducing single-atom Cu enhance catalyst performance. Electrochemical assessments indicated SA–Fe–N5 exhibited excellent in alkaline solutions, with half-wave potential diffusion-limited current density similar commercial Pt/C. Calculations based on functional theory single copper atom can function electron donor, at iron sites. This modification improves adsorption desorption energies intermediates involved process, ultimately boosting performance catalyst. Moreover, introduction site be regarded catalase nanozyme (CAT-SAzyme), facilitating decomposition byproduct H2O2 H2O thereby anti-Fenton during process. Notably, cathode zinc-air battery, demonstrated impressive power 217.8 mW cm–2 alongside 257.3 mA cm–2.

Language: Английский

Electron Donor–Acceptor Activated Anti-Fenton Property for the Ultradurable Oxygen Reduction Reaction DOI
Haomin Jiang, Jiayue He, Shaobing Zhou

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

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, long-term stability and effectiveness these significantly hindered by dissolution oxidation Fe atoms. Microstructural engineering Fe–N–C is a viable approach to enhancing ORR activity stability. Herein, CuN5-single-atom nanozymes (SAzyme)-assisted Fe–N5 (SA–Fe–N5) were developed introducing single-atom Cu enhance catalyst performance. Electrochemical assessments indicated SA–Fe–N5 exhibited excellent in alkaline solutions, with half-wave potential diffusion-limited current density similar commercial Pt/C. Calculations based on functional theory single copper atom can function electron donor, at iron sites. This modification improves adsorption desorption energies intermediates involved process, ultimately boosting performance catalyst. Moreover, introduction site be regarded catalase nanozyme (CAT-SAzyme), facilitating decomposition byproduct H2O2 H2O thereby anti-Fenton during process. Notably, cathode zinc-air battery, demonstrated impressive power 217.8 mW cm–2 alongside 257.3 mA cm–2.

Language: Английский

Citations

0