Low Temperature Performance Improvement of SOFC with Thin Film Electrolyte and Electrodes Fabricated by Pulsed Laser Deposition
- Low Temperature Performance Improvement of SOFC with Thin Film Electrolyte and Electrodes Fabricated by Pulsed Laser Deposition
- 노호성; 손지원; 이헌; 송휴섭; 이해원; 이종호
- Micro-SOFC; Thin Film Electrolyte; Pulsed Laser Deposition; Nanostructure Electrode
- Issue Date
- Journal of the Electrochemical Society
- VOL 156, NO 12, B1484-B1490
- The performance of solid oxide fuel cells (SOFCs) with thin film electrolytes and electrodes was investigated at a lower operating temperature regime (T ≤ 600°C). 2×2 cm anode-supported unit cells with thin film components of a Ni–yttria-stabilized zirconia (YSZ) composite anode interlayer, a thin ( ≤ 1 µm) YSZ electrolyte, and a lanthanum strontium cobalt oxide cathode were fabricated by using pulsed laser deposition, and the performance of the cells was characterized at the temperature range of 350°C ≤ T ≤ 600°C. Stable open-circuit voltage values above 1 V were successfully obtained with thin film electrolyte cells, which implied that the 1 µm thick electrolyte was fairly dense and gastight. The thin film electrolyte cells exhibited a much more improved cell performance than a thick film (~8 µm) YSZ electrolyte cell at the low operating temperature regime (350–550°C) and, in some cases, showed better power outputs than other thin film membrane micro-SOFCs.
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