Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis of Nanocrystalline Ceria for IT-SOFC by Glycine Nitrate Combustion Process

연소합성을 이용한 저온형 고체산화물 연료전지용 나노구조 세리아계 전해질 제조

  • Jo, Seung-Hwan (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jong-Ho (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Do-Kyung (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology)
  • 조승환 (한국과학기술원 신소재공학과) ;
  • 김종호 (한국과학기술원 신소재공학과) ;
  • 김도경 (한국과학기술원 신소재공학과)
  • Published : 2005.12.01
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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.

Keywords

References

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