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J. Korean Ceram. Soc. > Volume 38(9); 2001 > Article
Journal of the Korean Ceramic Society 2001;38(9): 787.
혼합전도성 $La_{0.6}Sr_{0.4}Co_{0.2}Fe_{0.8}O_{3-{delta}}$ 분리막의 산소투과 특성
임경태, 조통래, 이기성1, 우상국1, 박기배2, 김종원2
충남대학교 금속공학과
1한국에너지기술연구원 에너지재료팀
2한국에너지기술연구원 수소에너지연구센터
Oxygen Permeation Properties of $La_{0.6}Sr_{0.4}Co_{0.2}Fe_{0.8}O_{3-{delta}}$ Mixed-conducting Membrane
Kyoung-Tae Lim, Tong-Lae Cho, Kee-Sung Lee1, Sang-Kuk Woo1, Kee-Bae Park2, Jong-Won Kim2
Department of Metallurgical Engineering, Chungnam National University
1Korea Institute of Energy Research
2Korea Institute of Energy Research
ABSTRACT
$La_{0.6}Sr_{0.4}Co_{0.2}Fe_{0.8}O_{3-{delta}}$ membranes were fabricated by solid-state reaction. We investigated sintering behavior and oxygen permeation flux as a function of time-on-stream, temperature and upstream oxygen partial pressure. The oxygen was permeated at temperatures form 750$^{circ}$C to 950$^{circ}$C by mixed conducting through oxygen vacancy diffusion in the dense membrane. The oxygen permeation flux through the membrane were about 0.1ml/$cm^3{cdot}$min at 850$^{circ}$C. A constant time was required for reaching stable oxygen flux, and oxygen partial pressure affected the oxygen permeation fluxes.
Key words: Oxygen permeation properties, Perovskite-type ceramic membrane, Mixed conductor
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