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Electrochemical behaviour of Co-doped LSGM perovskites prepared by sol-gel synthesis

Published online by Cambridge University Press:  01 February 2011

Riccardo Polini ,
Alessia Falsetti ,
Enrico Traversa ,
Oliver Schäf  and
Philippe Knauth
Riccardo Polini
Affiliation:
Dipartimento di Scienze e Tecnologie Chimiche - Università di Roma Tor Vergata Via della Ricerca Scientifica, 00133 ROMA, (ITALY)
Alessia Falsetti
Affiliation:
Dipartimento di Scienze e Tecnologie Chimiche - Università di Roma Tor Vergata Via della Ricerca Scientifica, 00133 ROMA, (ITALY)
Enrico Traversa
Affiliation:
Dipartimento di Scienze e Tecnologie Chimiche - Università di Roma Tor Vergata Via della Ricerca Scientifica, 00133 ROMA, (ITALY)
Oliver Schäf
Affiliation:
MADIREL (UMR 6121) Université de Provence-CNRS, Centre Saint Jérôme F-13397 Marseille Cedex 20, (FRANCE)
Philippe Knauth
Affiliation:
MADIREL (UMR 6121) Université de Provence-CNRS, Centre Saint Jérôme F-13397 Marseille Cedex 20, (FRANCE)
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Abstract

La0.8Sr0.2Ga0.8Mg0.2-xCoxO3-δ (LSGMC) powders containing different amounts of Co (x = 0.05 and 0.085) were prepared by a citrate sol-gel method. Crystalline powders were obtained by firing at 1000°C (10 h) and dense high-purity pellets were prepared by pressing (300 MPa) and sintering in air at 1475°C (5, 10 and 20 h). The sintered pellets of LSGMC were characterized by X-Ray Diffraction (XRD) Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The conductivity of sintered LSGMC pellets containing different amounts of Co ions in the B sites of the perovskite lattice was assessed by electrochemical impedance spectroscopy (EIS) in the 250–750 °C temperature range. Conductivity values and apparent activation energies were in good agreement with previously published data referring to materials with same composition, but prepared by solid-state reaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K3.15
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1. Ishihara, T., Matsuda, H., and Takita, Y., J. Am. Chem. Soc., 116, 3801–3803 (1994).Google Scholar
2. Huang, P. and Petric, A., J. Electrochem. Soc., 143, 1644–1648 (1996).Google Scholar
3. Huang, K., Feng, M., and Goodenough, J. B., J. Am. Ceram. Soc., 79 1100–1104 (1996).Google Scholar
4. Maric, R., Ohara, S., Fukui, T., Yoshida, H., Nishimura, M., Inagaki, T., and Miura, K., J. Electrochem. Soc., 146, 2006–2010 (1999).Google Scholar
5. Ishihara, T., Matsuda, H., and Takita, Y., Solid State Ionics, 79, 147–151 (1995).Google Scholar
6. Ishihara, T., Akbay, T., Furutani, H. and Takita, Y., Solid State Ionics, 113–115, 585–591 (1998).Google Scholar
7. Ishihara, T., Furutani, H., Honda, M., Yamada, T., Shibayama, T., Akbay, T., Sakai, N., Yokokawa, H. and Takita, Y., Chem. Mater., 11, 2081–2088 (1999).Google Scholar
8. Trofimenko, N., Ullmann, H., Solid State Ionics, 118, 215–227 (1999).Google Scholar
9. Trofimenko, N., Ullmann, H., Solid State Ionics, 124, 263–270 (1999).Google Scholar
10. Ishihara, T., Shibayama, T., Honda, M., Nishiguchi, H. and Tacita, Y., J. Electrochem. Soc., 147, 1332–1337 (2000).Google Scholar
11. Kharton, V. V., Yaremchenko, A. A., Viskup, A. P., Mather, G. C., Naumovich, E. N. and Marques, F. M. B., J. Electroceram., 7, 57–66 (2001).Google Scholar
12. Yamada, T., Chitose, N., Akikusa, J., Murakami, N., Akbay, T., Miyazawa, T., Adachi, K., Hasegawa, A., Yamada, M., Hoshino, K., Hosoi, K., Komada, N., Yoshida, H., Kawano, M., Sasaki, T., Inagaki, T., Miura, K., Ishihara, T., Takita, Y., in Proceedings of the Eighth International Symposium on Solid Oxide Fuel Cells (SOFC-VIII), edited by Singhal, S. C. and Dokiya, M., The Electrochemical Society, Inc., Pennington, NJ (USA), 2003, p. 113–118.Google Scholar
13. Tas, A. C., Majewski, P., and Aldinger, F., J. Am. Ceram. Soc., 83, 2954–2960 (2000).Google Scholar
14. Majewski, P., Rozumek, M., Tas, C. A., and Aldinger, F., J. Electroceram., 8, 65–73 (2002).Google Scholar
15. Pechini, M., U. S. Patent No. 3 330 697 (11 July 1967).Google Scholar
16. Polini, R., Pamio, A. and Traversa, E., J. Eur. Ceram. Soc., 24, 1365–1370 (2004).Google Scholar
17. Schulz, O. and Martin, M., Solid State Ionics, 135, 549–555 (2000).Google Scholar
18. Polini, R., Falsetti, A. and Traversa, E., J. Eur. Ceram. Soc., in press.Google Scholar
19. Stevenson, J. W., Hasinska, K., Canfield, N. L., Armstrong, T. R., J. Electrochem. Soc., 147, 3213–3218 (2000).Google Scholar
20. Cong, L., He, T., Ji, Y., Guan, P., Huang, Y., Su, W., J. Alloys Comp., 348, 325–331 (2003).Google Scholar