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Research Article | Open Access

Effect of transition metal oxides doping on Ce0.9Sm0.05Nd0.05O1.95 solid electrolyte materials

Ming ZHOU, Lin GE, Han CHEN, Lucun GUO*( )
College of Materials Science and Engineering, Nanjing University of Technology, No.5 Xinmofan Road, Nanjing, 210009, China
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Abstract

The effect of transition metal oxides (TMOs) CoO1.5, FeO1.5 and MnO2 addition on Ce0.9Sm0.05Nd0.05O1.95 was studied. The crystal structures, microstructures, thermal expansion and electrical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), dilatometer and AC impedance spectroscopy，respectively. The results show that the TMOs addition remarkably promotes the densification of Ce0.9Sm0.05Nd0.05O1.95 and reduces the sintering temperature by ~150 ℃. The samples with TMOs addition sintered at 1450 ℃ exhibit higher conductivities than those sintered at 1500 ℃. The maximum conductivity of 0.040 s.cm-1 at 700 ℃ was achieved with 1 mol% FeO1.5 doping when sintered at 1450 ℃. In addition, the thermal expansion was linear for all the samples. The doping of TMOs does not appreciably change thermal expansion coefficient.

Keywords

microstructurethermal expansiontransition metal oxidesionic conductivity

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Journal of Advanced Ceramics
Volume 1 Issue 2,
June 2012
Pages 150-156
DOI: 10.1007/s40145-012-0013-1
Cite this article:
ZHOU M, GE L, CHEN H, et al. Effect of transition metal oxides doping on Ce0.9Sm0.05Nd0.05O1.95 solid electrolyte materials. Journal of Advanced Ceramics, 2012, 1(2): 150-156. https://doi.org/10.1007/s40145-012-0013-1

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Received: 26 August 2011
Accepted: 14 December 2011
Published: 08 September 2012
© The author(s) 2012
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