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Unravelling the Structure of Electrocatalytically Active Fe–N Complexes in Carbon for the Oxygen Reduction Reaction
Abstract
Non‐precious Fe/N co‐modified carbon electrocatalysts have attracted great attention due to their high activity and stability in oxygen reduction reaction (ORR). Compared to iron‐free N‐doped carbon electrocatalysts, Fe/N‐modified electrocatalysts show four‐electron selectivity with better activity in acid electrolytes. This is believed relevant to the unique Fe–N complexes, however, the Fe–N structure remains unknown. We used o,m,p‐phenylenediamine as nitrogen precursors to tailor the Fe–N structures in heterogeneous electrocatalysts which contain FeS and Fe 3 C phases. The electrocatalysts have been operated for 5000 cycles with a small 39 mV shift in half‐wave potential. By combining advanced electron microscopy and Mössbauer spectroscopy, we have identified the electrocatalytically active Fe–N 6 complexes (FeN 6, [Fe III(porphyrin)(pyridine)2]). We expect the understanding of the FeN 6 structure will pave the way towards new advanced Fe–N based electrocatalysts.
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Cites
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
Wu, G., More, K. L., Johnston, C. M., & Zelenay, P. (2011) · Science · doi:10.1126/science.1200832 · Cited by 3,984
Cited by
Du, L., Prabhakaran, V., Xie, X., Park, S., Wang, Y., & Shao, Y. (2021) · Advanced Materials · doi:10.1002/adma.201908232 · Cited by 357
Emerging new generation electrocatalysts for the oxygen reduction reaction
Raj, C. R., Samanta, A., Noh, S. H., Mondal, S., Okajima, T., & Ohsaka, T. (2016) · Journal of Materials Chemistry A · doi:10.1039/c6ta03300h · Cited by 201
Du, L., Xing, L., Zhang, G., Dubois, M., & Sun, S. (2020) · Small Methods · doi:10.1002/smtd.202000016 · Cited by 91
Proton Exchange Membrane (PEM) Fuel Cells with Platinum Group Metal (PGM)-Free Cathode
Du, L., Zhang, G., & Sun, S. (2021) · Automotive Innovation · doi:10.1007/s42154-021-00146-0 · Cited by 49
Metadata
- Authors
- Zhu, Y., Zhang, B., Liu, X., Wang, D., & Su, D. S.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2014-08-12
- Volume
- 53
- Issue
- 40
- Pages
- 10673-10677
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2148788455
- Cited by
- 337
- References
- 1
- FWCI
- 15.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhu, Y., Zhang, B., Liu, X., Wang, D., & Su, D. S. (2014). Unravelling the Structure of Electrocatalytically Active Fe–N Complexes in Carbon for the Oxygen Reduction Reaction. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201405314
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