Journal of Applied Electrochemistry

, Volume 30, Issue 4, pp 411–418 | Cite as

Durability test of SOFC cathodes

  • M.J. Jørgensen
  • P. Holtappels
  • C.C. Appel


The durability of solid oxide fuel cell (SOFC) composite cathodes of lanthanum strontium manganite and yttria stabilised zirconia was investigated. The cathodes were kept at constant, realistic operating conditions (−300 mA cm−2 at 1000 °C in air) for up to 2000 h. After the 2000 h test the increase in electrode overvoltage exceeded 100% of the initial value. Nominally identical cathodes kept for 2000 h at 1000 °C in air without current load for comparison showed little or no degradation. Thus, the current load of −300 mA cm−2, rather than the operation temperature of 1000 °C, was responsible for the degradation. Structural analysis showed an increase in the porosity at the electrode interfaces, when the electrode had been polarised. No such structural changes were found for electrodes tested without current load. The degradation is primarily ascribed to pore formation in the electrode material induced by an electric field.

cathodes degradation durability lanthanum strontium manganite solid oxide fuel cell structure 


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  1. 1.
    N.Q. Minh and T. Takahashi, ‘science and Technology of Ceramic Fuel Cells’ (Elsevier Science BV, 1995), p. 118.Google Scholar
  2. 2.
    T. Kenjo and M. Nishiya, Solid State Ionics 57 (1992) 295.Google Scholar
  3. 3.
    M.J.L. Østergård, C. Clausen, C. Bagger and M. Mogensen, Electrochim. Acta 40 (1995) 1971.Google Scholar
  4. 4.
    J. Mizusaki, H. Tagawa, K. Tsuneyoshi and A. Sawata, J. Electrochem. Soc. 138 (1991) 1867.Google Scholar
  5. 5.
    F.H. van Heuveln, F.P.F. van Berkel and J.P.P. Huijsmans, in Proc. 14th Risø International Symposium on ‘Material Science’, Denmark, edited by F.W. Poulsen, J.J. Bentzen, T. Jacobsen, E. Skou and M.J.L. Østergård (1993), p. 53.Google Scholar
  6. 6.
    K. Sasaki, J.P. Wurth, M. Gödickemeier, A. Mitterdorfer and L.J. Gauckler, in Proc. 4th International Symposium on ‘OFC’, Japan, edited by M. Dokiya, O. Yamamoto, H. Tagawa and S.C. Singhal (1995), p. 625.Google Scholar
  7. 7.
    M. Juhl, C. Manon, S. Primdahl, M. Mogensen, J. Power Sources 61 (1996) 173.Google Scholar
  8. 8.
    C. Clausen, C. Bagger, J.B. Bilde-Sørensen, A. Horsewell, Solid State Ionics 70/71 (1994) 59.Google Scholar
  9. 9.
    L.A. Chick, L.R. Pederson, G.D. Maupin, J.L. Bates, L.E. Thomas and G.J. Exarhos, Mater. Lett. 10 (1990) 6.Google Scholar
  10. 10.
    B.A. Boukamp, Solid State Ionics 20 (1986) 31.Google Scholar
  11. 11.
    C.C. Appel, N. Bonanos, A. Horsewell and S. Linderoth, to be published.Google Scholar
  12. 12.
    P. Holtappels, M. Juhl Jørgensen, S. Primdahl, M. Mogensen and C. Bagger, in Proceedings of the 3rd European SOFC Forum, 2-5 June, France, edited by P. Stevens (1998), p. 311.Google Scholar
  13. 13.
    G.Ø. Lauvstad, R. Tunold and S. Sunde, in Proceedings of the 7th IEA SOFC Workshop:‘ Theory and Measurement of Microscale Processes in Solid Oxide Fuel Cells’, Norway (1995), p. 41.Google Scholar
  14. 14.
    H. Tsukuda and A. Yamashita, in Proceedings of the First European Fuel Cell Forum, Switzerland, edited by U. Bossel (1994), p. 715.Google Scholar
  15. 15.
    L. Bay and T. Jacobsen, Solid State Ionics 93 (1997) 201.Google Scholar
  16. 16.
    L. Bay and T. Jacobsen, in Proceedings of the 10th IEA SOFC Workshop: ‘Materials and Processes’, Switzerland (1997), p. 142.Google Scholar
  17. 17.
    G.J. Yurek and H. Schmalzried, Ber. Bunsenges. Phys. Chem. 79 (1975) 255.Google Scholar
  18. 18.
    D. Monceau, M. Filal, M. Tebtoub, C. Petot, G. Petot-Ervas, Solid State Ionics 73 (1994) 221.Google Scholar
  19. 19.
    J.-O. Hong and H.-I. Yoo, Solid State Ionics 113-115 (1998) 265.Google Scholar
  20. 20.
    H.-I. Yoo and K.-C. Lee, J. Electrochem. Soc. 145 (1998) 4243.Google Scholar
  21. 21.
    C. Bagger, M. Juhl, P.V. Hendriksen, P.H. Larsen, M. Mogensen, J.G. Larsen and S. Pehrson, in Proceedings of 2nd European SOFC Forum, Norway, edited by B. Thorstensen (1996), p. 175.Google Scholar
  22. 22.
    C.C. Appel,‘ Geological Survey of Denmark and Greenland’, Denmark, unpublished result.Google Scholar

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • M.J. Jørgensen
    • 1
  • P. Holtappels
    • 1
  • C.C. Appel
    • 1
  1. 1.Materials Research DepartmentRisø National LaboratoryRoskildeDenmark

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