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Fabrication and Conductivities of CeO2-Based Oxygen-Ion Conductors Doped by M2O3 (M=La, Nd, Sm and/or Ga)

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Abstract:

Ceria oxygen-ion conductors doped with M2O3 (M=La, Nd, Sm and/or Ga) were prepared by a wet chemical method. Phases were analyzed by X-ray diffraction method and conductivities were measured by using AC impedance analyzer. The results showed that Ga2O3-CeO2 solid solution with 17 nm grains and pure fluorite phase had been obtained even at calcination temperature of 800 °C for 5 hs. Conductivities of Ga2O3-La2O3 co-doped CeO2 were higher than that of Sm2O3-doped CeO2, which was reported having the highest conductivity among CeO2-based oxides.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

244-246

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.244

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Online since:

February 2008

Authors:

H. Zhang, H.T. Zhou, Bill Bergman, Z.C. Li

Keywords:

CeO2-Based Oxides, Conductivity, PVA Polymerized Process, Synthesis

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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