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Ridge-Valley Nanostructured Samaria-Doped Ceria Interlayer for Thermally Stable Cathode Interface in Low-Temperature Solid Oxide Fuel Cell
- Issue Date
- Nov-2017
- Publisher
- Wiley - V C H Verlag GmbbH & Co.
- Keywords
- doped ceria films; interlayers; low temperature SOFC; metal electrodes; thermal stability
- Citation
- physica status solidi (a) - applications and materials science, v.214, no.11
- Indexed
- SCIE
SCOPUS
- Volume
- 214
- Number
- 11
- ISSN
- 1862-6300
1862-6319
- Abstract
- Agglomeration of the metal electrode decreases the performance of low-temperature solid oxide fuel cells (LT-SOFC) during operation at elevated temperatures. Here, we report a Pt electrode/ridge-valley nanostructured samaria-doped ceria (SDC) layer interface with extended lifetime. LT-SOFCs with RF-sputtered SDC interlayers with thicknesses in the range 65-260nm show a >20 times lower degradation of performance as compared to cells without interlayer when operated at 450 degrees C (1.8%h(-1) vs. 45%h(-1)). Micromorphological analysis reveals that the coarsening of the Pt electrode is significantly suppressed by the presence of the nanostructured SDC interlayer, possibly due to a stronger bonding between this layer and the Pt grains.
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Related Researcher
- Kim, Young Beom
- COLLEGE OF ENGINEERING (SCHOOL OF MECHANICAL ENGINEERING)