Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Fabrication and Electrochemical Characterization of LSM/GDC based Cathode Supported Direct Carbon Fuel Cells

직접탄소 연료전지용 LSM/GDC 공기극 지지체 제조 및 전기화학 특성 평가

  • Ahmed, Bilal (Department of Advanced Energy Technology, University of Science and Technology) ;
  • Wahyudi, Wandi (Department of Advanced Energy Technology, University of Science and Technology) ;
  • Lee, Seung-Bok (Department of Advanced Energy Technology, University of Science and Technology) ;
  • Song, Rak-Hyun (Department of Advanced Energy Technology, University of Science and Technology) ;
  • Lee, Jong-Won (Department of Advanced Energy Technology, University of Science and Technology) ;
  • Lim, Tak-Hyoung (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Park, Seok-Joo (Fuel Cell Research Center, Korea Institute of Energy Research)
  • 빌랄 아메드 (과학기술연합대학원 신에너지학과) ;
  • 완디 와휴디 (과학기술연합대학원 신에너지학과) ;
  • 이승복 (과학기술연합대학원 신에너지학과) ;
  • 송락현 (과학기술연합대학원 신에너지학과) ;
  • 이종원 (과학기술연합대학원 신에너지학과) ;
  • 임탁형 (한국에너지기술연구원 수소연료전지연구단) ;
  • 박석주 (한국에너지기술연구원 수소연료전지연구단)
  • Received : 2013.06.13
  • Accepted : 2013.06.30
  • Published : 2013.06.30
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Abstract

In this study, successive coating and co-sintering techniques have been used to fabricate LSM/GDC based cathode supported direct carbon fuel cells. The porous LSM/GDC cathode substrate, dense, thin and crack free GDC and ScSZ layers as bi-layer electrolyte, and a porous Ni/ScSZ anode layer was obtained by co-firing at $1400^{\circ}C$. The porous structure of LSM/GDC cathode substrate, after sintering at $1400^{\circ}C$, was obtained due to the presence of GDC phase, which inhibits sintering of LSM because of its higher sintering temperature. The electrochemical characterization of assembled cell was carried out with air as an oxidant and carbon particles in molten carbonate as fuel. The measured open circuit voltages (OCVs) were obtained to be more than 0.99 V, independent of testing temperature. The peak power densities were 116, 195 and $225mWcm^{-2}$ at 750, 800 and $850^{\circ}C$, respectively.

Keywords

References

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