Surface Modification and Characterization of Perovskite-Type Mixed Ionic-Electronic Conductors


Article Preview

Surface modification effects have been investigated for perovskite-type mixed ionic-electronic conductors. As the mixed conducting oxides show both ionic and electronic conductivity, these can be applied as oxygen permeable membranes. We have coated surfaces of the perovskite-type mixed conductors, LaSrCoFeO3 and LaSrGaFeO3, with LaSrCoO3 and investigated the effects on oxygen permeability. Enhanced oxygen permeability was achieved when the LaSrGaFeO3 membrane was surface-modified with LaSrCoO3. However, there was no effect on oxygen permeability of LaSrCoFeO3 even when the surface of which was modified. The morphological factors related with electrochemical reactions have also been discussed



Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi




S. W. Lee et al., "Surface Modification and Characterization of Perovskite-Type Mixed Ionic-Electronic Conductors", Materials Science Forum, Vols. 449-452, pp. 1297-1300, 2004

Online since:

March 2004




[1] B. Gharbage, F.M. Figueiredo, R.T. Baker, and F.M.B. Marques: Electrochimica Acta Vol. 45 (2000), p. (2095).

[2] C.Y. Tsai, A.G. Dixon, W.R. Moser, and M.R. Pascucci: J. Am. Ceram. Soc. Vol. 81 (1998), p.1437.

[3] L. Hong, X. Chen, and Z. Cao: J. Eur. Ceram. Soc. Vol. 21 (2001), p.2207.

[4] W. Jin, S. Li, P. Huang, and J. Shi: J. Membrane Science Vol. 185 (2001), p.237.

[5] P.J. Gellings and H.J.M. Bouwmeester, The CRC Handbook of Solid State Electrochemistry (CRC Press, Inc., The Netherlands 1997).

[6] S. Carter, A. Selcuk, R.J. Chater, J. Kajda, J.A. Kilner, and B.C.H. Steele: Solid State Ionics Vol. 53 (1992), p.597.

[7] S. Kim, S. Wang, X. Chen, Y.L. Yang, N. Wu, A. Ignatiev, A.J. Jacobson, and B. Abeles: J. Electrochem. Soc. Vol. 147 (2000), p.2398.

[8] S.P. Jiang: Solid State Ionics Vol. 146 (2002), p.1. Fig. 5. Oxygen permeation fluxes of D-LSC/GF, P-LSC/GF, and PD-LSC/GF.