Oxygen transport in epitaxial La0.875Sr0.125CoO3-delta thin-film cathodes for solid oxide fuel cells: Roles of anisotropic strain
- Title
- Oxygen transport in epitaxial La0.875Sr0.125CoO3-delta thin-film cathodes for solid oxide fuel cells: Roles of anisotropic strain
- Author
- 정용재
- Keywords
- Oxygen transport; LSC perovskites; Solid-state ionics; Anisotropic strain; SOFC cathodes
- Issue Date
- 2016-04
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- SCRIPTA MATERIALIA, v. 115, Page. 141-144
- Abstract
- We use first-principles calculation to investigate the influence of lattice strain on the oxygen vacancy and the migration energies in La1-xSrCoO3-delta via a realistic approach using the Poisson's ratio. In the calculation of the vacancy formation energy, it was found that the oxygen sites in the major axis are favorable for achieving vacancy under tensile conditions, while those in the minor axis are in favor of vacancy formation under compressive conditions. The migration energy calculations for oxygen vacancy are also carried out and this reveals interesting strain dependence, higher activation energy when compressive strain is applied in the lateral direction. (C) 2016 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S135964621530107X?via%3Dihubhttp://hdl.handle.net/20.500.11754/50318
- ISSN
- 1359-6462
- DOI
- 10.1016/j.scriptamat.2015.12.035
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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