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Phase Transitions, Thermal Desorption of Gases, and Electroconduction in BaCeO3, a Base for High-Temperature Protonic Conductors

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Abstract

Investigations of phase transitions in barium cerate are carried out by methods of dilatometry and differential scanning calorimetry. Thermal desorption of gases and temperature dependences of electroconduction in dry and humid air are studied. Barium cerate exhibits complex polymorphism, undergoing a number of structural conversions at 300– 1300 K. The peaks in the spectra of thermal desorption of CO2 and H2O correlate with variations in the crystal lattice. Structural changes in BaCeO3 affect activation energies for the carrier transport and the shares of partial conductivities.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 22, Yekaterinburg, 620219, Russia

    A. V. Kuz’min, V. P. Gorelov, E. G. Vaganov & I. V. Korzun

  2. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russia

    V. A. Kazantsev

  3. Institute of Nuclear Physics, National Nuclear Center of Kazakhstan, Almaty, Kazakhstan

    T. I. Aksenova & I. V. Khromushin

Authors
  1. A. V. Kuz’min
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  2. V. P. Gorelov
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  3. E. G. Vaganov
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  4. I. V. Korzun
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  5. V. A. Kazantsev
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  6. T. I. Aksenova
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  7. I. V. Khromushin
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Correspondence to A. V. Kuz’min.

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__________

Translated from Elektrokhimiya, Vol. 41, No. 5, 2005, pp. 620–626.

Original Russian Text Copyright © 2005 by Kuz’min, Gorelov, Vaganov, Korzun, Kazantsev, Aksenova, Khromushin.

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Kuz’min, A.V., Gorelov, V.P., Vaganov, E.G. et al. Phase Transitions, Thermal Desorption of Gases, and Electroconduction in BaCeO3, a Base for High-Temperature Protonic Conductors. Russ J Electrochem 41, 544–549 (2005). https://doi.org/10.1007/s11175-005-0103-2

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  • DOI: https://doi.org/10.1007/s11175-005-0103-2

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