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Microstructural and electrical properties of Ce0.9Gd0.1O1.95 thin-film electrolyte in solid-oxide fuel cells

Published online by Cambridge University Press:  09 March 2011

Sungmee Cho ,
Jongsik Yoon ,
Jung-Hyun Kim ,
Xinghang Zhang ,
Arumugam Manthiram  and
Haiyan Wang
Sungmee Cho
Affiliation:
Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128
Jongsik Yoon
Affiliation:
Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128
Jung-Hyun Kim
Affiliation:
Electrochemical Energy Laboratory and Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712
Xinghang Zhang
Affiliation:
Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123
Arumugam Manthiram
Affiliation:
Electrochemical Energy Laboratory and Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712
Haiyan Wang*
Affiliation:
Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Microstructural and electrical properties of Gd-doped CeO2 (GDC; Ce0.9Gd0.1O1.95) thin films prepared by pulsed laser deposition as an electrolyte in solid-oxide fuel cells (SOFCs) were investigated. The GDC thin films were prepared on various substrates including single-crystal yttria-stabilized zirconia (YSZ) and magnesium oxide (MgO) substrates. The GDC thin-film electrolytes with different grain sizes and grain morphologies were prepared by varying the deposition parameters, such as substrate temperature, oxygen partial pressure, target repetition rate, and laser ablation energy. The microstructural properties of these films were examined using X-ray diffraction (XRD), transmission electron microscopy (TEM), and atomic force microscopy (AFM). Alternating-current (AC) and direct-current (DC) electrical measurements through in-plane method show that the electrical property of the GDC thin film strongly depends on grain size, e.g., the total conductivity of the films deposited at 700 °C (7.3 × 10−3 S/cm) is about 20 times higher than the ones deposited at room temperature (3.6 × 10−4 S/cm) at the measurement temperature of 600 °C.

Keywords

Thin FilmElectrical PropertiesPhysical Vapor Deposition (PVD)
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 7 , 14 April 2011 , pp. 854 - 859
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1.Steel, B.C.H.: Appraisal of Ce1−yGdyO2−y/2 electrolytes for IT-SOFC operation at 500 °C. Solid State Ionics 129, 95 (2000).CrossRefGoogle Scholar
2.Suzuki, T., Kosacki, I., and Anderson, H.U.: Microstructure–electrical conductivity relationships in nanocrystalline ceria thin films. Solid State Ionics 151, 111 (2002).CrossRefGoogle Scholar
3.Huang, D.X., Chen, C.L., and Jacobson, A.J.: Interface structures and periodic film distortions induced by substrate-surface steps in Gd-doped ceria thin-film growth. Appl. Phys. Lett. 87, 043506–1 (2005).Google Scholar
4.Huang, D.X., Chen, C.L., Chen, L., and Jacobson, A.J.: Strain relaxation by directionally aligned precipitate nanoparticles in the growth of single-crystalline Gd-doped ceria thin films. Appl. Phys. Lett. 84, 708 (2004).CrossRefGoogle Scholar
5.Kleinlogel, C. and Gauckler, L.J.: Sintering and properties of nanosized ceria solid solutions. Solid State Ionics 135, 567 (2000).CrossRefGoogle Scholar
6.Chiodelli, G., Malavasi, L., Massarotti, V., Mustarelli, P., and Quartarone, E.: Synthesis and characterization of Ce0.8Gd0.2O2−y polycrystalline and thin film materials. Solid State Ionics 176, 1505 (2005).Google Scholar
7.Ishihara, T., Shibayama, T., Honda, M., Nishiguchi, H., and Takita, Y.: Intermediate temperature solid oxide fuel using LaGaO3 electrolyte II. Cells improvement of oxide ion conductivity and power density by doping Fe for Ga site of LaGaO3. J. Electrochem. Soc. 147, 1332 (2000).CrossRefGoogle Scholar
8.Kim, J.W., Virkar, A.V., Fung, K.Z., Mehta, K., and Singhal, S.C.: Polarization effects in intermediate temperature anode-supported solid oxide fuel cells. J. Electrochem. Soc. 146, 9 (1999).CrossRefGoogle Scholar
9.Will, J., Mitterdorfer, A., Kleinlongel, C., Perednis, D., and Gauckler, L.J.: Fabrication of thin electrolytes for second-generation solid oxide fuel cells. Solid State Ionics 131, 79 (2000).CrossRefGoogle Scholar
10.Maric, R., Ohara, S., Fukui, T., Yoshida, H., Nishimura, M., Inagaki, T., and Miura, K.: Solid oxide fuel cells with doped lanthanum gallate electrolyte and LaSrCoO3 cathode, and Ni-samaria-doped ceria cermet anode. J. Electrochem. Soc. 146, 2006 (1999).CrossRefGoogle Scholar
11.Xia, C. and Liu, M.: Novel cathodes for low-temperature solid oxide fuel cells. J. Adv. Mater. 14, 521 (2002).3.0.CO;2-C>CrossRefGoogle Scholar
12.Ishihara, T., Sato, K., and Takita, Y.: Electrophoretic deposition of Y2O3-stabilized ZrO2 electrolyte films in solid oxide fuel cells. J. Am. Ceram. Soc. 79, 913 (1996).CrossRefGoogle Scholar
13.Kilner, J.A.: Fast oxygen transport in acceptor doped oxides. Solid State Ionics 129, 13 (2000).CrossRefGoogle Scholar
14.de Souza, S., Visco, S.J., and de Jonghe, L.C.: Thin-film solid oxide fuel cell with high performance at low-temperature. Solid State Ionics 98, 57 (1997).CrossRefGoogle Scholar
15.Xia, C., Chen, F., and Liu, M.: Reduced-temperature solid oxide fuel cells fabricated by screen printing. Electrochem. Solid-State Lett. 4, A52 (2001).CrossRefGoogle Scholar
16.Jiang, S.P., Leng, Y.J., Chan, S.H., and Khor, K.A.: Development of (La,Sr)MnO3-based cathodes for intermediate temperature solid oxide fuel cells. Electrochem. Solid-State Lett. 6, A67 (2003).CrossRefGoogle Scholar
17.Rupp, J.L.M. and Gauckler, L.J.: Microstructures and electrical conductivity of nanocrystalline ceria-based thin films. Solid State Ionics 177, 2513 (2006).CrossRefGoogle Scholar
18.Kuo, Y.-L., Lee, C., Chen, Y.-S., and Liang, H.: Gadolinia-doped ceria films deposited by RF reactive magnetron sputtering. Solid State Ionics 180, 1421 (2009).CrossRefGoogle Scholar
19.Chen, L., Chen, C.L., Chen, X., Donner, W., Liu, S.W., Lin, Y., Huang, D.X., and Jacobson, A.J.: Electrical properties of a highly oriented, textured thin film of the ionic conductor Gd:CeO2−δ on (001) MgO. Appl. Phys. Lett. 83, 4737 (2003).Google Scholar
20.Joo, J.H. and Choi, G.M.: Electrical conductivity of thin film ceria grown by pulsed laser deposition. Solid State Ionics 27, 4273 (2007).Google Scholar
21.Infortuna, A., Harvey, A.S., and Gauckler, L.J.: Microstructures of CGO and YSZ thin films by pulsed laser deposition. J. Adv. Funct. Mater. 18, 127 (2008).CrossRefGoogle Scholar
22.Rodrigo, K., Knudsen, J., Pryds, N., Schou, J., and Linderoth, S.: Characterization of yttria- stabilized zirconia thin films grown by pulsed laser deposition (PLD) on various substrates. Appl. Surf. Sci. 254, 1338 (2007).CrossRefGoogle Scholar
23.Wang, H., Sharma, A., and Kvit, A.: Mechanical properties of nanocrystalline and epitaxial TiN films on (100) silicon. J. Mater. Res. 16, 9 (2001).Google Scholar
24.Yoon, J.S., Araujo, R., Grunbaum, N., Baque, L., Serquis, A., Caneiro, A., Zhang, X.H., and Wang, H.: Nanostructured cathode thin films with vertically-aligned nanopores for thin film SOFC and their characteristics. Appl. Surf. Sci. 254, 266 (2007).CrossRefGoogle Scholar
25.Yoon, J.S., Cho, S.M., Kim, J-H., Lee, J.H., Bi, Z., Serquis, A., Zhang, X., Manthiram, A., and Wang, H.: Vertically aligned nanocomposite thin films as a cathode-electrolyte interface layer for thin film solid oxide fuel cells. J. Adv. Funct. Mater. 19, 1 (2009).CrossRefGoogle Scholar
26.Zhou, X., Huebner, W., Kosacki, I., and Anderson, H.U.: Microstructure and grain boundary effect on electrical properties of gadolinium-doped ceria. J. Am. Ceram. Soc. 85, 1757 (2002).CrossRefGoogle Scholar
27.Hui, S.R., Roller, J., Zhang, X., Petit, C.D., Xie, Y., Maric, R., and Ghosh, D.: Various approaches to enhance ionic conductivity of selected oxide electrolytes. J. Electrochem. Soc. 2, 964 (2005) (Solid Oxide Fuel Cell IX).Google Scholar
28.Barsoukov, E. and Macdonald, J.R.: Impedance Spectroscopy Theory, Experiment, and Applications, 2nd ed. (John Wiley & Sons, 2005) p. 241.CrossRefGoogle Scholar