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Russian Journal of Electrochemistry

, Volume 41, Issue 6, pp 665–670 | Cite as

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

  • N. V. Sharova
  • V. P. Gorelov
  • V. B. Balakireva
Article

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.

Key words

charge transport BaCl0.85R0.15O3 − δ (R = Sm,Pr,Tb) high-temperature protonic conductor 

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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • N. V. Sharova
    • 1
  • V. P. Gorelov
    • 1
  • V. B. Balakireva
    • 1
  1. 1.Institute of High-Temperature Electrochemistry, Ural DivisionRussian Academy of SciencesYekaterinburgRussia

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