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J. Korean Ceram. Soc. > Volume 51(4); 2014 > Article
Journal of the Korean Ceramic Society 2014;51(4): 231.
doi: https://doi.org/10.4191/kcers.2014.51.4.231
고체산화물 연료전지 연결재용 세라믹 소재
박범경, 송락현, 이승복, 임탁형, 박석주, 박종욱1, 이종원
한국에너지기술연구원 신재생에너지연구본부
1한국과학기술원 신소재공학과
Ceramic Materials for Interconnects in Solid Oxide Fuel Cells - A Review
Beom-Kyeong Park, Rak-Hyun Song, Seung-Bok Lee, Tak-Hyoung Lim, Seok-Joo Park, Chong-Ook Park1, Jong-Won Lee
New and Renewable Energy Research Division, Korea Institute of Energy Research
1Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology
An interconnect in solid oxide fuel cells (SOFCs) electrically connects unit cells and separates fuel from oxidant in the adjoining cells. The interconnects can be divided broadly into two categories - ceramic and metallic interconnects. A thin and gastight ceramic layer is deposited onto a porous support, and metallic interconnects are coated with conductive ceramics to improve their surface stability. This paper provides a short review on ceramic materials for SOFC interconnects. After a brief discussion of the key requirements for interconnects, the article describes basic aspects of chromites and titanates with a perovskite structure for ceramic interconnects, followed by the introduction of dual-layer interconnects. Then, the paper presents protective coatings based on spinel-or perovskite-type oxides on metallic interconnects, which are capable of mitigating oxide scale growth and inhibiting Cr evaporation.
Key words: Solid oxide fuel cell, Interconnect, Perovskite oxide, Spinel oxide, Protective coating
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