Paper Titles
Effects of Infrared Scattering Powders on the Thermal Properties of Porous SiO2 Insulation Material
p.689
Mechanical Behaviors of Foam Nickel Ceramic
p.693
Effect of Hexagonal BN on the Microstructure and Mechanical Properties of Pressureless Sintered Porous Si3N4 Ceramics
p.697
Dielectric Properties of Porous Si3N4 Ceramics Prepared by In Situ Cordierite Bonding
p.701
Fabrication and Characterizations of YSZ Electrolyte Films for SOFC
p.705
Influence of Thickness on Oxide Ionic Conductivity in Sm3+ and Nd3+ Co-Doped CeO2 Electrolyte
p.710
A Facile Template-Free Synthesis of Praseodymium-Doped Ceria Nanorods
p.714
Preparation of GDC Nanopowders and GDC/YSZ Core-Shell Nanocomposites
p.717
Zircontes/Sulfates Composites: Perfect Combination of High- and Low-Temperature Protonic Conductors
p.719

Fabrication and Characterizations of YSZ Electrolyte Films for SOFC

Article Preview

Abstract:

Yttria stabilized zirconia (YSZ) has been widely used as electrolyte in solid oxide fuel cell (SOFC). The effect of fabrication process on the properties of YSZ electrolyte thick film is discussed in the paper. With YSZ nano-powders of about 20-60nm as raw material, YSZ green adobe was fabricated by tape calendering process. Three-step sintering process was performed firstly holding at 1000°C for 2h, then raising to 1300~1400°C, then decreasing to 1200~1300°C within 30 minutes, and finally calcining at 1200~1300°C for 5~20 hrs. Dense YSZs with relative density of 96-99% are obtained; the grain size of YSZ was reduced to 0.5-3µm. During the process of grain growth, there are both grain boundary diffusion and grain boundary migration. The feasibility of densification without grain growth relies on the suppression of grain boundary migration while keeping grain boundary diffusion active at a temperature as low as 1200~1300°C. Whereas the electric conductivities of the YSZs are even higher than that obtained in conventional single step sintering process. The process is applied to the anode-supported SOFCs co-fired at 1250~1300°C, and the cathode-supported SOFCs co-fired at 1200~1250°C.

You might also be interested in these eBooks
High-Performance Ceramics VI View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Pages:

705-709

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.434-435.705

Citation:

Cite this paper

Online since:

March 2010

Authors:

Min Fang Han, Zhi Bin Yang, Ze Liu, Hui Rong Le

Keywords:

Electrolyte, Solid Oxide Fuel Cell (SOFC), Yttria Stabilized Zirconia (YSZ)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2010 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] N.Q. Minh and T. Takahashi: Science and Technology of Ceramic Fuel Cells, Elsevier Science B. V., Amsterdam, The Netherland, (1995).

Google Scholar

[2] M. F. Han, S. P. Peng: Materials and fabrication of solid oxide fuel cells, Science Press, Beijing, 2004 2, (In Chinese).

Google Scholar

[3] S. C. Singhal and K. Kendall: High Temperature Solid Oxide Fuel Cells: Fundamentals, Desigh and Applications, Elsevier Advanced Technology, Oxford, UK, (2004).

Google Scholar

[4] R. N. Basu, G. Blass: J. Eur. Ceram. Soc. Vol. 25 (2005), pp.463-471.

Google Scholar

[5] M. F. Han, H. Y. Yin, W. T. Miao, S. Zhou: Solid State Ionics, Vol. 179 (2008), pp.1545-1548.

Google Scholar

[6] W. T. Miao, M. F. Han, H. Y. Yin: Rare Met. Mater. Eng. Vol. 37(1) (2007), pp.431-434 (In Chinese).

Google Scholar

[7] M. F. Han, C. B. Yang, L. J. Huo, S. P. Peng: Rare Met. Mater. Eng. Vol: 34(1) (2005), pp.657-661.

Google Scholar

[8] H. Orui, K. Watanabe, M. Arakara: J. Power Sources. Vol. 112 (2002), pp.90-97.

Google Scholar

[9] K. Yamahara, C. P. Jacobson, S. J. Visco, et al.: Solid State Ionics. Vol. 176 (2005), pp.451-456.

DOI: 10.1016/j.ssi.2004.09.023

Google Scholar

[10] S. D. Souza, S. J. Visco, L. C. De Jonghe: Solid State Ionic. Vol. 98 (1997), pp.57-61.

Google Scholar

[11] H. Y. Yin, M. F. Han, W. T. Miao: IOM East Asia - 6th Materials Processing, Properties and Performance (MP3) conference 13-16 September, 2007 Beijing, China, p.1051.

Google Scholar

[12] M. M. Han, S. P. Peng, H. Y. Yin: Chinese Patent ZL 100805970 (2006).

Google Scholar

[13] J. L. Shi, M. L. Ruan and T. S. Yen: Ceram. Inter. Vol. 22(1996), pp.137-142.

Google Scholar

[14] H. Y. Yin, M. F. Han: Key Eng. Mater. Vol. 336-338(2007), pp.2558-2561.

Google Scholar

[15] M. F. Han, C. B. Yang, B. T. Li, S. P. Peng: Battery. Vol. 34(3) (2004), pp.207-208.

Google Scholar

[16] M. F. Han, S. P. Peng, B. T. Li: Rare Met. Mater. Eng. Vol. 32(1) (2003), pp.491-495.

Google Scholar

[17] M. F. Han, X. L. Tang, H. Y. Yin, S. P. Peng: J. Power Sources. Vol. 165 (2007), pp.757-763.

Google Scholar

[18] M. F. Han, L. J. Huo, B. T. Li, S. P. Peng: J. Uni. Sci. Tech. Beijing. Vol. 12(1): (2005), pp.78-80.

Google Scholar

[19] M. F. Han, B. T. Li, S. P. Peng: J. Wuhan Uni. Tech. Mater. Sci. Vol. 19(3) (2004), pp.10-13.

Google Scholar

[20] M. P. Harmer, R. J. Brook: J. Brit Ceram. Soc. Vol. 80(5) (1980), p.147.

Google Scholar

[21] I. W. Chen, X. H. Wang: Nat. Vol. 404 (2000), pp.168-171.

Google Scholar

[22] X. Guo, R. Waser: Prog. Mater. Sci. Vol. 51 (2006), pp.151-210.

Google Scholar

[23] X. J. Chen, K. A. Khor, S. H. Chan et al: Mater. Sci. Eng. A. Vol. 335 (2002), pp.246-252.

Google Scholar

[24] P. Mondal, A. Klein, W. Jaegermann, et al.: Solid State Ionics. Vol. 118 (1999), pp.331-339.

Google Scholar