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Electrophysical properties of layered perovskites LnBaCo2 − x Cu x O5 + δ (Ln = Sm, Nd) for solid oxide fuel cells

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Abstract

The influence of doping with copper oxide on the phase composition, electric conductivity, and linear thermal expansion coefficient (LTEC) of SmBaCo2O5 + δ and NdBaCo2O5 + δ was studied. The sample homogeneity region has been determined with using XRD. The samples conductivity decreased as the dopant concentration increased. The character of the temperature dependence of conductivity changed at high copper contents. In a reductive atmosphere, the conductivity of the samples at first decreased and then remained constant. The linear thermal expansion coefficient decreased as the amount of the incorporated dopant increased.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia

    T. A. Zhuravleva

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  1. T. A. Zhuravleva
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Correspondence to T. A. Zhuravleva.

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Original Russian Text © T.A. Zhuravleva, 2011, published in Elektrokhimiya, 2011, Vol. 47, No. 6, pp. 723–727.

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Zhuravleva, T.A. Electrophysical properties of layered perovskites LnBaCo2 − x Cu x O5 + δ (Ln = Sm, Nd) for solid oxide fuel cells. Russ J Electrochem 47, 676–680 (2011). https://doi.org/10.1134/S1023193511060164

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  • DOI: https://doi.org/10.1134/S1023193511060164

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