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한국세라믹학회지 = Journal of the Korean Ceramic Society v.43 no.12 = no.295, 2006년, pp.758 - 763  
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Characterization of Ln0.8Sr0.2CoO3-δ (Ln=Gd, Nd, Pr, Sm, or Yb) as Cathode Materials for Low-Temperature SOFCs

Choi, Jung-Woon   (Department of Materials Science and Engineering, University of Seoul  ); Kang, Ju-Hyun   (Department of Materials Science and Engineering, University of Seoul  ); Kim, Han-Ji   (Department of Materials Science and Engineering, University of Seoul  ); Yoo, Kwang-Soo   (Department of Materials Science and Engineering, University of Seoul  );
  • 초록

    Perovskites with nominal compositions $Ln_{0.8}Sr_{0.2}CoO_{3-\delta}$ (Ln=Gd, Nd, Pr, Sm, or Yb) were fabricated as cathode materials using a solid-state reaction method for low-temperature operating Solid-Oxide Fuel Cells (SOFCs). X-ray diffraction analysis and microstructure observation for the sintered samples were performed. The ac complex impedance was measured in the temperature range of $600-900^{\circ}C$ in air and fitted with a Solartron ZView program. The crystal structure, microstructure, electrical conductivity, and polarization resistance of $Ln_{0.8}Sr_{0.2}CoO_{3-\delta}$ were characterized systematically.


  • 주제어

    SOFC .   Cathode materials .   Polarization resistance .   Impedance .   Porosity.  

  • 참고문헌 (20)

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