Paper Title:
Sintering and Electrical Properties of Ce0.8Sm0.2O1.9 Solid Electrolyte Modified by Addition of MnO2
  Abstract

The effect of MnO2 addition (0–2.0 mol%) on the densification, crystal structure, and ionic conductivity of Ce0.8Sm0.2O1.9 (SDC) was studied. The addition of MnO2 promotes densification, reducing sintering temperature by ~150°C. X-ray diffraction analysis showed that all the samples exhibit a fluorite structure. Impedance spectroscopy measurements indicated that SDC with appropriate ratio of MnO2 addition has higher ionic conductivity and lower activation energy compared with that of SDC. As the addition amount of Mn increases up to 1.0 mol% [(Ce0.8Sm0.2O1.9)0.99+(MnO2)0.01], the sample attains the highest ionic conductivity, about 35% higher than that of SDC at 600°C. In addition, Mn addition has little effect on bulk conductivity, but a marked influence on grain boundary behavior is observed.

  Info
Periodical
Advanced Materials Research (Volumes 197-198)
Edited by
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Pages
610-616
DOI
10.4028/www.scientific.net/AMR.197-198.610
Citation
Y. F. Zheng, L. C. Guo, "Sintering and Electrical Properties of Ce0.8Sm0.2O1.9 Solid Electrolyte Modified by Addition of MnO2", Advanced Materials Research, Vols. 197-198, pp. 610-616, 2011
Online since
February 2011
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$32.00
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