Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Ceramic Materials for Interconnects in Solid Oxide Fuel Cells - A Review

고체산화물 연료전지 연결재용 세라믹 소재

  • Park, Beom-Kyeong (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Song, Rak-Hyun (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Lee, Seung-Bok (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Lim, Tak-Hyoung (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Park, Seok-Joo (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Park, Chong-Ook (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Jong-Won (New and Renewable Energy Research Division, Korea Institute of Energy Research)
  • 박범경 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 송락현 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 이승복 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 임탁형 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 박석주 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 박종욱 (한국과학기술원 신소재공학과) ;
  • 이종원 (한국에너지기술연구원 신재생에너지연구본부)
  • Received : 2014.06.13
  • Accepted : 2014.07.17
  • Published : 2014.07.31
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Abstract

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.

Keywords

References

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