| 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 |
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| ABSTRACT |
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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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