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Electrical Properties of Nanocrystalline Ce0.8Sm0.2O2− and Ce1−xGdxO2− (0.1 ≦ x ≦ 0.3) Ceramics for IT-SOFC

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Ce0.8Sm0.2O2− and Ce1−xGdxO2− (0.1 ≦ x ≦ 0.3) nano-sized powders were successfully synthesized by the solution combustion synthesis process. The calcined nanopowders showed a ceria-based single phase with a cubic fluorite structure. In this study, we discussed the structural and electrical characteristics of the sintered Ce0.8Sm0.2O2− and Ce1−xGdxO2−. We obtained high-quality Ce0.8Sm0.2O2− and Ce1−xGdxO2− ceramics with a high density, ultra-fine grain size, and high electrical conductivity even at low sintering temperature using the nanosized powders. The electrical conductivities at 800 °C for the Ce0.8Sm0.2O2− sintered at 1400 °C and the Ce0.8Sm0.2O2− sintered at 1350 °C were 0.110 and 0.104 Scm−1, respectively.
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Document Type: Research Article

Publication date: 2010-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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