한국신재생에너지학회:학술대회논문집

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Studies of Co-Fe based perovskite cathodes with fixed A-site cations

중 저온형 고체 산화물 연료전지를 Co-Mn 계열의 페로브스카이트 구조의 공기극에 관한 연구

  • 박광진 (한국과학기술원 기계공학과) ;
  • 김정현 (한국과학기술원 기계공학과) ;
  • 배중면 (한국과학기술원 기계공학과)
  • Published : 2006.11.23
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Abstract

The decrease of polarization resistance in cathode is the key point for intermediate temperature SOFC(Solid Oxide Fuel Cell). In this study, the Influence of Co substitution in B-site at perovskite PSCM (Pr0.3Sr0.7CoxMn(1-x)) was investigated. The PSCM series exhibits excellent MIEC(Mixed ionic Electronic Conductor) properties. The ASR(Area Specific Resistance) of PSCM3773 was $0.174{\Omega}cm^2\;at\;700^{\circ}C$. The activation energy of PSCM3773 was also lower than other compositions of PSCM. The ASR values were increased gradually during the thermal cycling test of PSCM37773 due to the delamination between electrolyte and cathode materials.

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