The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.
Cobalt-Based Nitride-Core Oxide-Shell Oxygen Reduction Electrocatalysts
Abstract
Developing high-performance, low-cost, and conductive nonprecious electrocatalysts for the oxygen reduction reaction (ORR) has been a key challenge for advancing fuel cell technologies. Here, we report on a novel family of cobalt nitrides (Co x N/C, x = 2, 3, 4) as ORR electrocatalysts in alkaline fuel cells. Co 4 N/C exhibited the highest ORR activity among the three types of cobalt nitrides studied, with a half-wave potential ( E 1/2 ) of 0.875 V vs RHE in 1 M KOH, rivaling that of commercial Pt/C (0.89 V). Moreover, Co 4 N/C showed an 8-fold improvement in mass activity at 0.85 V, when compared to cobalt oxide, Co 3 O 4 /C, and a negligible degradation (Δ E 1/2 = 14 mV) after 10 000 potential cycles. The superior performance was ascribed to the formation of a conductive nitride core surrounded by a naturally formed thin oxide shell (about 2 nm). The conductive nitride core effectively mitigated the low conductivity of the metal oxide, and the thin oxide shell on the surface provided the active sites for the ORR. Strategies developed herein represent a promising approach for the design of other novel metal nitrides as electrocatalysts for fuel cells.
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Citations
Cites
Electrocatalyst approaches and challenges for automotive fuel cells
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Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction
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Self-citationEnergy and fuels from electrochemical interfaces
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Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst
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Cited by
Transition metal nitrides for electrochemical energy applications
Wang, H., Li, J., Li, K., Lin, Y., Chen, J., Gao, L., Nicolosi, V., Xiao, X., & Lee, J.-M. (2021) · Chemical Society Reviews · doi:10.1039/d0cs00415d · Cited by 983
Electrocatalysis in Alkaline Media and Alkaline Membrane-Based Energy Technologies
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Self-citationDouka, A. I., Xu, Y., Yang, H., Zaman, S., Yan, Y., Liu, H., Salam, M. A., & Xia, B. Y. (2020) · Advanced Materials · doi:10.1002/adma.202002170 · Cited by 305
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Metadata
- Authors
- Yang, Y., Zeng, R., Xiong, Y., DiSalvo, F. J., & Abruña, H. D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-11-19
- Volume
- 141
- Issue
- 49
- Pages
- 19241-19245
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2990770324
- Cited by
- 258
- References
- 42
- FWCI
- 5.10
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yang, Y., Zeng, R., Xiong, Y., DiSalvo, F. J., & Abruña, H. D. (2019). Cobalt-Based Nitride-Core Oxide-Shell Oxygen Reduction Electrocatalysts. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.9b10809
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