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J. Korean Ceram. Soc. > Volume 44(12); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(12): 690.
doi: https://doi.org/10.4191/kcers.2007.44.1.690
초음파 분무 열분해법을 이용한 스칸디아 안정화 지르니코니아의 제조와 전기 전도도
최영훈, 백동현, 박영철, 임경태1, 서동수1, 서동수2, 서동수2
한국에너지기술연구원 수소.연료전지연구부
1충남대학교 나노공학부
Preparation and Electrical Conductivity of Scandia Stabilized Zirconia by using Ultrasonic Spray Pyrolysis
Young-Hoon Choi, Dong-Hyun Peck, Young-Chul Park, Kyoung-Tae Lim1, Dong-Soo Suhr1, J. Wackerl2, T. Markus2
Korea Institute of Energy Research (KIER)
1Division of New Materials Engineering, Chungnam National University
2Institute of Energy Research(IEF-2), Research Centre Julich(FZJ)
Scandia stabilized zirconia (ScSZ) is adapted for electrolyte material of solid oxide fuel cell (SOFC) because of its high ionic conductivity and chemical stability. ScMnSZ1 powder having a composition of $((ZrO_2)_{0.89}(Sc_2O_3)_{0.1}(MnO_2)_{0.01})$ is synthesized by ultrasonic spray pyrolysis (USP) method. Porous ScMnSZ1 powder is obtained by using a pore forming agent. Microstructure and morphology, particle size distribution of porous powder synthesized with 3wt% pore forming agent are investigated. Sintered ScMnSZ1 sample with ground fine powder are also investigated their microstructure and electrical conductivity. The electrical conductivity of sintered ScMnSZ1 samples with ground fine powder was 0.082 S/cm, 0.127 S/cm and 0.249 S/cm at $750^{circ}C$, $800^{circ}C$ and $900^{circ}C$, respectively.
Key words: ScSZ, SOFC, USP, Microstructure, Electrical conductivity
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