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Extraction of Quantitative Parameters for Describing the Microstructure of Solid Oxide Fuel Cells

Published online by Cambridge University Press:  06 August 2013

Seung-Muk Bae ,
Yong-Hoon Kim ,
Yil-Hwan You  and
Jin-Ha Hwang
Seung-Muk Bae
Affiliation:
Department of Materials Science and Engineering, Hongik University 72-1 Sangsu-Dong, Mapo-Gu, Seoul 121-791, Korea
Yong-Hoon Kim
Affiliation:
Department of Materials Science and Engineering, Hongik University 72-1 Sangsu-Dong, Mapo-Gu, Seoul 121-791, Korea
Yil-Hwan You
Affiliation:
Department of Materials Science and Engineering, Hongik University 72-1 Sangsu-Dong, Mapo-Gu, Seoul 121-791, Korea
Jin-Ha Hwang*
Affiliation:
Department of Materials Science and Engineering, Hongik University 72-1 Sangsu-Dong, Mapo-Gu, Seoul 121-791, Korea
*
*Corresponding author. E-mail: [email protected]
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Abstract

Digital quantification of a two-dimensional structure was applied to a GDC(Gd2O3-doped CeO2)/LSM(La0.85Sr0.15MnO3) composite cathode employed for solid oxide fuel cells. With the aid of high-resolution imaging capability based on secondary and backscattered electron images, two-dimensional electron micrographs were converted to digital binary files using an image processing tool combined with the line intercept method. Statistical analysis combined with a metallurgical tool was employed to determine microstructural factors, i.e., volume fraction, size distribution, and interconnectivity. The current work reports the quantification of the two-dimensional structural images of GDC/LSM composites applicable to solid oxide fuel cells, with the aim of obtaining the volume fraction, size distribution, and interconnectivity as functions of composite composition. The volume fractions of the solid constituent phases exhibit compositional dependence in cathodes; however, LSM interconnectivity increases gradually as a function of LSM composition, whereas that of GDC decreases significantly at 50 wt% LSM.

Keywords

image processingdigital processingmicrostructural factorssolid oxide fuel cellscathodesline intercepts
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 140 - 144
Copyright
Copyright © Microscopy Society of America 2013 

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References

Abanades, S. & Flamant, G. (2006). Thermochemical hydrogen production from a two-step solar-driven water-splitting cycle based on cerium oxides. Solar Energy 80, 1611–1623.10.1016/j.solener.2005.12.005Google Scholar
Alexander, K.B., Becher, P.F., Waters, S.B. & Bleier, A. (1994). Grain growth kinetics in alumina–zirconia (CeZTA) composites. J Am Ceram Soc 77, 939–946.10.1111/j.1151-2916.1994.tb07250.xGoogle Scholar
Balachandran, U., Lee, T.H. & Dorris, S.E. (2007). Hydrogen production by water dissociation using mixed conducting dense ceramic membranes. Int J Hydrogen Energy 32, 451–456.10.1016/j.ijhydene.2006.05.010Google Scholar
Berman, A. & Epstein, M. (2000). The kinetics of hydrogen production in the oxidation of liquid zinc with water vapor. Int J Hydrogen Energy 25, 957–967.10.1016/S0360-3199(00)00015-XGoogle Scholar
Brown, J.T. (1986). High-temperature solid-oxide fuel cell. Energy 11, 209–229.Google Scholar
Brundle, C.R., Evans, C.A. Jr. & Wilson, S. (1992). Encyclopedia of Materials Characterization. Greenwich, CT: Manning Publications Co.Google Scholar
Cahn, J.W. & Hilliard, J.E. (1959). The measurement of grain contiguity in opaque samples. Trans Metall Soc AIME 215, 759–765.Google Scholar
Goldstein, J., Newbury, D., Joy, D., Lyman, C., Echlin, P., Lifshin, E., Sawyer, L. & Michael, J. (2003). Scanning Electron Microscopy and X-Ray Microanalysis. New York: Kluwer Academic/Plenum Publishers.10.1007/978-1-4615-0215-9Google Scholar
Lee, K.-R., Choi, S.H., Kim, J., Lee, H.W. & Lee, J.-H. (2005). Viable image analyzing method to characterize the microstructure and the properties of the Ni/YSZ cermet anode of SOFC. J Power Sources 140, 226–234.10.1016/j.jpowsour.2004.06.031Google Scholar
McLachlan, D.S., Blaszkiewicz, M. & Newnham, R.E. (1990). Electrical resistivity of composites. J Am Ceram Soc 73(8), 2187–2203.10.1111/j.1151-2916.1990.tb07576.xGoogle Scholar
Naito, H. & Arashi, H. (1995). Hydrogen production from direct water splitting at high temperatures using a ZrO2–TiO2–Y2O3 membrane. Solid State Ionics 79, 366–370.10.1016/0167-2738(95)00089-OGoogle Scholar
Shao, Z., Yang, W., Cong, Y., Dong, H., Tong, J. & Xiong, G. (2000). Investigation of the permeation behavior and stability of a Ba0.5Sr0.5Co0.8Fe0.2O3−δ oxygen membrane. J Membrane Sci 172(1-2), 177–188.10.1016/S0376-7388(00)00337-9Google Scholar
Simwonis, D., Tietz, F. & Tagawa, H. (2000). Nickel coarsening in annealed Ni/8YSZ anode substrates for solid oxide fuel cell. Solid State Ionics 132, 241–251.10.1016/S0167-2738(00)00650-0Google Scholar
Smith, C.S. & Guttman, L. (1953). Measurement of internal boundaries in three-dimensional structures by random sectioning. Trans Metall Soc AIME 197, 81–87.Google Scholar
Steele, B.C.H. & Heinzel, A. (2001). Materials for fuel-cell technologies. Nature 414, 345–352.10.1038/35104620Google Scholar