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Journal of Ceramic Science and Technology

The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of  the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.

The Journal is published by Göller Verlag GmbH on behalf of the Deutsche Keramische Gesellschaft (DKG). Edited by Yu-Ping Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China.

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Effect of Co Co-Doping on the Electrical Conductivity of Ce0.9Sm0.1O2-δ

M.J. Pawar, S.S. Chaure, S.B. Deshmukh

Laboratory of Materials Synthesis, Department of Chemistry, ACS College, Amravati, India, 444602

received March 23, 2010, received in revised form May 26, 2010, accepted May 30, 2010

Vol. 1, No. 1, Pages 27-31   DOI: 10.4416/JCST2010-00006

Abstract

The influence of cobalt doping on the densification and activation energy of Ce0.9Sm0.1O2-δ was studied. Solid solutions of Ce0.9-xCoxSm0.1O2-δ (x = 0, 0.05, 0.1 and 0.15) were prepared by means of a modified EDTA-glycol method. It was found that the degree of densification increases with an increasing concentration of cobalt. Almost full densification could be achieved at a sintering temperature of 1500 °C. The highest density (99.3 %) and minimum activation energy (0.81 eV) were observed for the composition Ce0.8Co0.1Sm0.1O2-δ.

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Keywords

SOFC; ceria; EDTA-glycol method; co-dopant; solid electrolytes

References

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Copyright

© 2010 Göller Verlag

Acknowledgments

The author is grateful to the Department of Metallurgy and Material Science Engineering, VNIT Nagpur for permitting the use of the XRD and SEM measurements.

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