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J. Korean Ceram. Soc. > Volume 42(12); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(12): 821.
doi: https://doi.org/10.4191/kcers.2005.42.12.821
연소합성을 이용한 저온형 고체산화물 연료전지용 나노구조 세리아계 전해질 제조
조승환, 김종호, 김도경
한국과학기술원 신소재공학과
Synthesis of Nanocrystalline Ceria for IT-SOFC by Glycine Nitrate Combustion Process
Seung-Hwan Jo, Jong-Ho Kim, Do-Kyung Kim
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology
ABSTRACT
Gadolinia-doped ceria nanopowder was prepared by glycine-nitrate combustion method with different glycine/nitrate mixing ratio. The characteristics of the synthesized powder were investigated by X-ray diffraction method, transmission electron microscopy, thermal gravity, differential thermal analysis and thermo-mechanical analysis. The smallest powder was obtained with glycine/nitrate ratio 1.00 and the lowest organic and water vapor contained powder was made with glycine/nitrate ratio 1.75. According to dilatometry, fast densification was occurred around $1000^{circ}C$ and shows full density over $1300^{circ}C$. Finally near-fully dense ceria electrolyte was fabricated with conventional sintering technique. Glycine-nitrate process yields fine nanopowders which enable low temperature sintering and fabrication of fully dense and nanostructured oxide electrolyte.
Key words: SOFC, GNP, GDC, Nanocrystalline, Nanoparticle, Consolidation
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