Skip to main content Accessibility help
×
Home

Creating Dense, Constrained Ce0.9Gd0.1O1.95 Films at Low Temperature for SOFC Applications

  • Jason D. Nicholas (a1) and Lutgard C. De Jonghe (a2)

Abstract

We have investigated the effect of various dopants on the sintering characteristics of Ce0.9Gd0.1O1.95 (CGO) and found that 99% dense electrolyte pellets can be produced at the record low temperature of 800°C (as opposed to the 1400°C typically needed) by sintering Ce0.9Gd0.1O1.95 with as little 3mol% lithium. Our studies indicate that doping the CGO surface with lithium nitrate, as opposed to using alternative lithium salts, produces the largest decrease in sintering temperature. Unlike other dopants that lower the sintering temperature by altering the near grain boundary vacancy concentration, lithium lowers the sintering temperature through the formation of an intergranular liquid phase. This liquid phase allows fully dense, completely constrained CGO films to be produced on inert substrates at temperatures as low as 950°C.

Copyright

References

Hide All
[1] Scherer, G. W. and Garino, T., Journal of the American Ceramic Society 68 (1985) 216.
[2] Lee, J.-S., Choi, K.-H., Ryu, B.-K., Shin, B.-C. and Kim, I.-S., Ceramics International 20 (2004) 807.
[3] Gil, V., Tartaj, J., Moure, C. and Duran, P., Journal of the European Ceramic Society 27 (2007) 801.
[4] Jud, E., Zhang, Z., Sigle, W. and Gauckler, L. J., Journal of Electroceramics 16 (2006) 191.
[5] Kleinlogel, C. and Gauckler, L. J., Advanced Materials 13 (2001) 1081.
[6] Fagg, D. P., Kharton, V. V. and Frade, J. R., Journal of Electroceramics 9 (2002) 199.
[7] Lewis, G. S., Atkinson, A., Steele, B. C. H. and Drennan, J., Solid State Ionics 152–153 (2002) 567.
[8] Mori, M., Suda, E., Pacaud, B., Murai, K. and Moriga, T., Journal of Power Sources 157 (2006) 688.
[9] Perez-Coll, D., Nunez, P., Abrantes, J. C. C., Fagg, D. P., Kharton, V. V. and Frade, J. R., Solid State Ionics 176 (2005) 2799.
[10] Zhang, T. S., Ma, J., Leng, Y. J., Chan, S. H., Hing, P. and Kilner, J. A., Solid State Ionics 168 (2004) 187.
[11] Zhang, T., Hing, P., Huang, H. and Kilner, J., Materials Letters 57 (2002) 507.
[12] Zhang, T. S., Ma, J., Chan, S. H. and Kilner, J. A., Solid State Ionics 176 (2005) 377.
[13] Zhang, T. S., Ma, J., Kong, L. B., Chan, S. H., Hing, P. and Kilner, J. A., Solid State Ionics 167 (2004) 203.
[14] Zhang, T. S., Ma, J., Kong, L. B., Hing, P., Leng, Y. J., Chan, S. H. and Kilner, J. A., Journal of Power Sources 124 (2003) 26.
[15] Zhang, T. S., Ma, J., Kong, L. B., Zeng, Z. Q., Hing, P. and Kilner, J. A., Materials Science and Engineering B 103 (2003) 177.
[16] Lee, J.-S. and Choi, K.-H., Journal of Materials Science 40 (2005) 1153.
[17] Kang, C. Y., Kusaba, H., Yahiro, H., Sasaki, K. and Teraoka, Y., Solid State Ionics 177 (2006) 1799.
[18] Jud, E. and Gauckler, L., Journal of the American Ceramic Society 89 (2006) 2970.
[19] Nicholas, J. D. and DeJonghe, L. C., in Proceedings of the European Fuel Cell Forum (Lucerne, Switzerland, 2006) p. P0511.
[20] Finley, B. D. and Saltzman, E. S., in American Geophysical Union Fall Meeting (San Francisco, CA, 2006).
[21] Chase, M. W., Journal of Physical Chemical Reference Data, Monograph 9 (1998) 1.
[22] Barin, I., Thermochemical Data of Pure Substances (VCH, New York, 1995).
[23] Steele, B. C. H., Lewis, G., Oishi, N. and Selcuk, A., Densification of Ceria Based Electrolytes, in "World Intellectual Property Organization Patent Number WO 2004/089848 A1" (Brian Charles Hilton Steele, United Kingdom, 2004).
[24] Brandon, N. P., Corcoran, D., Cummins, D., Duckett, A., El-Khoury, K., Haigh, D., Leah, R., Lewis, G., Maynard, N., McColm, T., Trezona, R., Selcuk, A. and Schmidt, M., Journal of Materials Engineering and Performance 13 (2004) 253.

Keywords

Related content

Powered by UNSILO

Creating Dense, Constrained Ce0.9Gd0.1O1.95 Films at Low Temperature for SOFC Applications

  • Jason D. Nicholas (a1) and Lutgard C. De Jonghe (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.