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J. Korean Ceram. Soc. > Volume 45(12); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(12): 802.
doi: https://doi.org/10.4191/kcers.2008.45.1.802
저온작동 (600∼650°C) SOFC용 복합밀봉재 제조 및 평가
임현엽, 김형철, 최선희, 김혜령, 손지원, 이해원, 이종호
한국과학기술연구원 에너지재료연구단
Fabrication and Characterization of Composite Sealants for Low Temperature (600∼650°C)SOFCs
Hyun-Yub Lim, Hyoung-Chul Kim, Sun-Hee Choi, Hae-Ryoung Kim, Ji-Won Son, Hae-Weon Lee, Jong-Ho Lee
Center for Energy Materials Research, Korea Institute of Science and Technology
A proper sealant for low temperature SOFCs should show zero or low leak rates to avoid direct mixing of the fuel and oxidant gases or leakage of fuel gas during the operation of SOFCs. Furthermore, it should be chemically and/or mechanically stable in both oxidizing and reducing environments and chemically compatible with other fuel cell components. In the present work, we developed a novel compressed seal gasket of glass-based composite reinforced with ceramic particulate particles, which can efficiently control the viscous flow of glass matrix as well as the crystallization of glass phase. This novel sealing gasket showed excellent gas tightness under very low compressive load which would be suitable for the operation of SOFCs in the temperature range $600{sim}650^{circ}C$.
Key words: SOFC, Sealants, Seal gasket, Glass composite, Gas leakage
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