The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.
Stability of Fe‐N‐C Catalysts in Acidic Medium Studied by Operando Spectroscopy
Abstract
Fundamental understanding of non‐precious metal catalysts for the oxygen reduction reaction (ORR) is the nub for the successful replacement of noble Pt in fuel cells and, therefore, of central importance for a technological breakthrough. Herein, the degradation mechanisms of a model high‐performance Fe‐N‐C catalyst have been studied with online inductively coupled plasma mass spectrometry (ICP‐MS) and differential electrochemical mass spectroscopy (DEMS) coupled to a modified scanning flow cell (SFC) system. We demonstrate that Fe leaching from iron particles occurs at low potential (<0.7 V) without a direct adverse effect on the ORR activity, while carbon oxidation occurs at high potential (>0.9 V) with a destruction of active sites such as FeNxCy species. Operando techniques combined with identical location‐scanning transmission electron spectroscopy (IL‐STEM) identify that the latter mechanism leads to a major ORR activity decay, depending on the upper potential limit and electrolyte temperature. Stable operando potential windows and operational strategies are suggested for avoiding degradation of Fe‐N‐C catalysts in acidic medium.
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Cites
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
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Scientific Aspects of Polymer Electrolyte Fuel Cell Durability and Degradation
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Self-citationA review on non-precious metal electrocatalysts for PEM fuel cells
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An oxygen reduction electrocatalyst based on carbon nanotube–graphene complexes
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Iron-based cathode catalyst with enhanced power density in polymer electrolyte membrane fuel cells
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Self-citationOxygen Electrochemistry as a Cornerstone for Sustainable Energy Conversion
Katsounaros, I., Cherevko, S., Zeradjanin, A. R., & Mayrhofer, K. J. J. (2014) · Angewandte Chemie International Edition · doi:10.1002/anie.201306588 · Cited by 1,401
Self-citationRecent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC
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Cited by
Wang, X. X., Swihart, M. T., & Wu, G. (2019) · Nature Catalysis · doi:10.1038/s41929-019-0304-9 · Cited by 1,174
(2020) · doi:10.1038/s41929-020-00545-2 · Cited by 741
PGM‐Free Cathode Catalysts for PEM Fuel Cells: A Mini‐Review on Stability Challenges
Shao, Y., Dodelet, J., Wu, G., & Zelenay, P. (2019) · Advanced Materials · doi:10.1002/adma.201807615 · Cited by 553
Emerging Dual‐Atomic‐Site Catalysts for Efficient Energy Catalysis
Zhang, W., Chao, Y., Zhang, W., Zhou, J., Lv, F., Wang, K., Lin, F., Luo, H., Li, J., Tong, M., et al. (2021) · Advanced Materials · doi:10.1002/adma.202102576 · Cited by 528
(2022) · doi:10.1038/s41929-022-00796-1 · Cited by 491
Metadata
- Authors
- Choi, C. H., Baldizzone, C., Grote, J., Schuppert, A. K., Jaouen, F., & Mayrhofer, K. J. J.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-08-28
- Volume
- 54
- Issue
- 43
- Pages
- 12753-12757
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2128102324
- Cited by
- 438
- References
- 49
- FWCI
- 6.55
- Type
- journal article
- Language
- en
- Open access
- closed
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- Choi, C. H., Baldizzone, C., Grote, J., Schuppert, A. K., Jaouen, F., & Mayrhofer, K. J. J. (2015). Stability of Fe‐N‐C Catalysts in Acidic Medium Studied by Operando Spectroscopy. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201504903
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