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Charge Transport in BaCe0.85R0.15O3 − δ (R = Sm, Pr, Tb) in Oxidizing and Reducing Environment

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Abstract

Overall conductance (in moist and dry air at partial water vapor pressures of 2.34 and 40 Pa, below 970° C) and transport numbers for ions and protons in ceramics BaCe0.85R0.15O3 − δ doped by cations with constant (R = Sm) and variable (R = Pr, Tb) oxidation degrees and in BaCeO3 are measured. Partial conductances (by ions, protons, oxygen ions, holes) are determined in moist air at partial oxygen pressures of 105–10−13 Pa at 900°C. Various models for the hydrogen incorporation in the oxides under study are discussed.

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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

    N. V. Sharova, V. P. Gorelov & V. B. Balakireva

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  1. N. V. Sharova
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  2. V. P. Gorelov
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  3. V. B. Balakireva
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Correspondence to N. V. Sharova.

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__________

Translated from Elektrokhimiya, Vol. 41, No. 6, 2005, pp. 748–754.

Original Russian Text Copyright © 2005 by Sharova, Gorelov, Balakireva.

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Sharova, N.V., Gorelov, V.P. & Balakireva, V.B. Charge Transport in BaCe0.85R0.15O3 − δ (R = Sm, Pr, Tb) in Oxidizing and Reducing Environment. Russ J Electrochem 41, 665–670 (2005). https://doi.org/10.1007/s11175-005-0121-0

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  • DOI: https://doi.org/10.1007/s11175-005-0121-0

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