The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.
Step-change in high temperature steam electrolysis performance of perovskite oxide cathodes with exsolution of B-site dopants
Abstract
B-site doped, A-site deficient perovskite oxide titanates with formula La0.4Sr0.4Mn+xTi1−xO3−γ−δ (M = Fe3+ or Ni2+; x = 0.06; γ = (4 − n)x/2) were employed as solid oxide electrolysis cell (SOEC) cathodes for hydrogen production via high temperature steam electrolysis at 900 °C. A-site deficiency provided additional driving force for the exsolution of a proportion of B-site dopants at the surface in the form of metallic nanoparticles under reducing SOEC cathode operating conditions. In the case of La0.4Sr0.4Fe0.06Ti0.94O2.97, this represents the first time that Fe0 has been exsolved from a perovskite in such a way. Exsolution was due in part to the inability of the host lattice to accommodate vacancies (introduced (δ) oxygen vacancies () and fixed A-site () and inherent (γ) oxygen vacancies) beyond a certain limit. The presence of electrocatalytically active Fe0 or Ni0 nanoparticles and higher concentrations dramatically lowered the activation barrier to steam electrolysis compared to the parent material (x = 0). The use of defect chemistry to drive the exsolution of less reducible dopant cations could conceivably be extended to produce new catalytically active perovskites with unique properties.
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Cited by
Heterointerface engineering for enhancing the electrochemical performance of solid oxide cells
Zhao, C., Li, Y., Zhang, W., Zheng, Y., Lou, X., Yu, B., Chen, J., Chen, Y., Liu, M., & Wang, J. (2020) · Energy & Environmental Science · doi:10.1039/c9ee02230a · Cited by 319
Metadata
- Authors
- Tsekouras, G., Neagu, D., & Irvine, J. T. S.
- Venue
- Energy Environ. Sci.
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 6
- Issue
- 1
- Pages
- 256-266
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2037690931
- Cited by
- 351
- References
- 20
- FWCI
- 5.21
- Type
- journal article
- Language
- en
- Open access
- closed
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- Tsekouras, G., Neagu, D., & Irvine, J. T. S. (2013). Step-change in high temperature steam electrolysis performance of perovskite oxide cathodes with exsolution of B-site dopants. Energy Environ. Sci. https://doi.org/10.1039/c2ee22547f
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
