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J. Korean Ceram. Soc. > Volume 37(6); 2000 > Article
Journal of the Korean Ceramic Society 2000;37(6): 612.
고체산화물 연료전지용 (La, Sr)$MnO_3$ 양극에 대한 Co 첨가효과
김재동, 김구대, 이기태
한국과학기술연구원 세라믹공정연구센터
Effect of Co Dopant on the (La, Sr)$MnO_3$ Cathode for Solid Oxide Fuel Cell
The effect of Co dopant on the (La, Sr)MnO3 cathode was investigated. La2Zr2O7 and SrZrO3 were formed as the reaction products between YSZ and LSMC. The reactivity of LSMC with YSZ increased with increasing Co content. However, the cathodic polarization resistance decreased with increasing Co doping. Therefore, doping Co at Mn site in the (La, Sr)MnO3 cathode was effective on controlling the polarization resistance of the cathode. The polarization property of LSMC-YSZ composite(60 wt%: 40 wt%) cathode was better than that of LSMC single cathode.
Key words: LSMC(La, Sr)(Mn, Co)$O_3$), ${La_2}{Zr_2}{O_7}$, $SrZrO_3$, Thermal expansion coefficient, Polarization resistance, LSMC-YSZ composite, SOFC
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