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Characterization and Fabrication of La(Sr)Fe(Co)O3-δ Infiltrated Cathode Support-Type Solid Oxide Fuel Cells

La(Sr)Fe(Co)O3-δ 침지법을 이용한 양극 지지형 SOFC 제조 및 출력 특성

  • Hwang, Kuk-Jin (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology (KICET)) ;
  • Kim, Min Kyu (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology (KICET)) ;
  • Kim, Hanbit (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology (KICET)) ;
  • Shin, Tae Ho (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology (KICET))
  • 황국진 (한국세라믹기술원 에너지환경소재본부) ;
  • 김민규 (한국세라믹기술원 에너지환경소재본부) ;
  • 김한빛 (한국세라믹기술원 에너지환경소재본부) ;
  • 신태호 (한국세라믹기술원 에너지환경소재본부)
  • Received : 2019.09.26
  • Accepted : 2019.10.17
  • Published : 2019.11.01

Abstract

To overcome the limitations of the conventional Ni anode-supported SOFCs, various types of ceramic anodes have been studied. However, these ceramic anodes are difficult to commercialize because of their low cell performances and difficulty in manufacturing anode-support typed SOFCs. Therefore, in this study, to use these ceramic anodes and take advantage of anode-supported SOFC, which can minimize ohmic loss from the thin electrolyte, we fabricated cathode support-typed SOFC. The cathode-support of LSCF-YSZ was prepared by the acid treatment of conventional Ni-YSZ (Yttria-stabilized Zirconia) anode-support, followed by the infiltration of LSCF to YSZ scaffold. The composite of $La(Sr)Ti(Ni)O_3$ and $Ce(Mn,Fe)O_2$ was used as the ceramic anode. The fabricated cathode-supported button cell showed a relatively low power density of $0.207Wcm^{-2}$ at $850^{\circ}C$; however, it is expected to show better performance through the optimization of the infiltration rate and thickness of LSCF-YSZ cathode-support layer.

Acknowledgement

Supported by : 한국산업기술진흥원, 한국산업기술평가관리원

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