期刊
JOURNAL OF ELECTROCERAMICS
卷 32, 期 1, 页码 28-36出版社
SPRINGER
DOI: 10.1007/s10832-013-9868-y
关键词
SOFC; Ceria; Strain; MD
资金
- HPC-EUROPA2 project [228398]
- European Commission Capacities Area - Research Infrastructures Initiative
- Science Foundation Ireland [12/IA/1414, 09/RFP/MTR2274, 08/RFP/MTR1044]
- Government of Ireland
- Science Foundation Ireland (SFI) [08/RFP/MTR1044, 09/RFP/MTR2274, 12/IA/1414] Funding Source: Science Foundation Ireland (SFI)
In this paper we report a computational study of the effects of strain on the conductivity of Y-doped ceria (YDC). This material was chosen as it is of technological interest in the field of Solid Oxide Fuel Cells (SOFCs). The simulations were performed under realistic operational temperatures and strain (oee-) levels. For bulk and thin film YDC, the results show that tensile strain leads to conductivity enhancements of up to 3.5 x and 1.44 x , respectively. The magnitude of these enhancements is in agreement with recent experimental and computational evidence. In addition, the methods presented herein allowed us to identify enhanced ionic conductivity in the surface regions of YDC slabs and its anisotropic character.
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