Asymmetric Coordination Regulating D‐Orbital Spin‐Electron Filling in Single‐Atom Iron Catalyst for Efficient Oxygen Reduction
Beijing University of Chemical Technology · University of Auckland
Abstract
Abstract The single‐atom Fe−N−C catalyst has shown great promise for the oxygen reduction reaction (ORR), yet the intrinsic activity is not satisfactory. There is a pressing need to gain a deeper understanding of the charge configuration of the Fe−N−C catalyst and to develop rational modulation strategies. Herein, we have prepared a single‐atom Fe catalyst with the co‐coordination of N and O (denoted as Fe−N/O−C) and adjacent defect, proposing a strategy to optimize the d‐orbital spin‐electron filling of Fe sites by fine‐tuning the first coordination shell. The Fe−N/O−C exhibits significantly better ORR activity compared to its Fe−N−C counterpart and commercial Pt/C, with a much more positive half‐wave…
Citation impact
- FWCI
- 11.31
- Percentile
- 100%
- References
- 51
Authors
10Topics & keywords
- Catalysis
- Atom (system on chip)
- Reduction (mathematics)
- Chemistry
- Oxygen
- Spin (aerodynamics)
- Oxygen reduction reaction
- Electron
- Affordable and clean energy