The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells
Abstract
Perovskite oxides have high catalytic activities for oxygen electrocatalysis competitive to platinum at elevated temperatures. However, little is known about the oxide surface chemistry that influences the activity near ambient oxygen partial pressures, which hampers the design of highly active catalysts for many clean-energy technologies such as solid oxide fuel cells. Using in situsynchrotron-based, ambient pressure X-ray photoelectron spectroscopy to study the surface chemistry changes, we show that the coverage of surface secondary phases on a (001)-oriented La0.8Sr0.2CoO3−δ (LSC) film becomes smaller than that on an LSC powder pellet at elevated temperatures. In addition, strontium (Sr) in the perovskite structure enriches towards the film surface in contrast to the pellet having no detectable changes with increasing temperature. We propose that the ability to reduce surface secondary phases and develop Sr-enriched perovskite surfaces of the LSC film contributes to its enhanced activity for O2 electrocatalysis relative to LSC powder-based electrodes.
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Self-citationFactors Governing Oxygen Reduction in Solid Oxide Fuel Cell Cathodes
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Lithium–oxygen batteries: bridging mechanistic understanding and battery performance
Lu, Y.-C., Gallant, B. M., Kwabi, D. G., Harding, J. R., Mitchell, R. R., Whittingham, M. S., & Shao-Horn, Y. (2013) · Energy & Environmental Science · doi:10.1039/c3ee23966g · Cited by 927
Self-citationInfluence of Oxygen Evolution during Water Oxidation on the Surface of Perovskite Oxide Catalysts
May, K. J., Carlton, C. E., Stoerzinger, K. A., Risch, M., Suntivich, J., Lee, Y.-L., Grimaud, A., & Shao-Horn, Y. (2012) · The Journal of Physical Chemistry Letters · doi:10.1021/jz301414z · Cited by 707
Self-citationInvestigation of solid/vapor interfaces using ambient pressure X-ray photoelectron spectroscopy
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Self-citationOxygen vacancies: The (in)visible friend of oxide electronics
Gunkel, F., Christensen, D. V., Chen, Y. Z., & Pryds, N. (2020) · Applied Physics Letters · doi:10.1063/1.5143309 · Cited by 406
Mueller, D. N., Machala, M. L., Bluhm, H., & Chueh, W. C. (2015) · Nature Communications · doi:10.1038/ncomms7097 · Cited by 395
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Metadata
- Authors
- Crumlin, E. J., Mutoro, E., Liu, Z., Grass, M. E., Biegalski, M. D., Lee, Y.-L., Morgan, D., Christen, H. M., Bluhm, H., & Shao-Horn, Y.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2012
- Volume
- 5
- Issue
- 3
- Pages
- 6081
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2163293390
- Cited by
- 375
- References
- 26
- FWCI
- 11.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- Crumlin, E. J., Mutoro, E., Liu, Z., Grass, M. E., Biegalski, M. D., Lee, Y.-L., Morgan, D., Christen, H. M., Bluhm, H., & Shao-Horn, Y. (2012). Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells. Energy & Environmental Science. https://doi.org/10.1039/c2ee03397f
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