| 중.저온헝 SOFC를 위한 Ni-YSZ 연료극 지지체형 단전지 미세구조와 전기적 특성 |
| 박재근, 양수용, 이태희, 오제명, 유영성, 박진우1 |
한국전력공사 전력연구원 전략기술연구소
1대성산업(주) 연구개발실 |
| Microstructure and Electrical Properties of Single Cells Based on a Ni-YSZ Cermet Anode for IT-SOFCs |
| Jae-Keun Park, Su-Yong Yang, Tae-Hee Lee, Je-Myung Oh, Young-Sung Yoo, Jin-Woo Park1 |
Strategic Technology Laboratory, Korea Electric Power Research Institute
1Daesung Industrial Co., Ltd. |
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| ABSTRACT |
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One of the main issues of Solid Oxide Fuel Cells (SOFCs) is to reduce the operating temperature to $750^{circ}C$ or less. It has advantages of improving the life of component parts and the long-term stability of a system, so the production cost could be decreased. In order to achieve that, the ohmic and polarization loss of a single cell should be minimized first. This paper presents.to fabricate anode-supported single cells with controlling microstructure as a function of particle size and volume of graphite and NiO-YSZ weight ratio. By means of optimizing the manufactural condition through microstructure analysis and performance evaluation, the single cell which had NiO-YSZ=6:4, graphite volume of 24% and graphite size of $75{mu}m$ as the anode composition showed a distinguished power density of $510mW/cm^2$ at $650^{circ}C$ and $810mW/cm^2$ at $700^{circ}C$, respectively. |
| Key words:
IT-SOFCs, Ni-YSZ cermet, TPB, Internal resistance, Electrical properties |
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