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Electroconduction and the Nature of Ionic Transport in BaZr0.95Nd0.05O3−δ

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Abstract

The electroconductivity and transport numbers for ions and protons in BaZr0.95Nd0.05O3− δ (BZN) are measured. The ionic, protonic, oxygen, and hole conductivities and their effective activation energies are determined. The measurements in air are performed in the temperature interval 600–910°C at \(p_{\operatorname{H} _2 \operatorname{O} }\) of 0.04 to 2.1 kPa. Dependences of partial conductivities on \(p_{\operatorname{O} _2 }\) are measured in the interval of compositions from air to 10−14 Pa at 800°C. In a reductive atmosphere, BZN becomes a purely protonic electrolyte. A defect model and quasi-chemical reactions of interaction of defects with the gas phase, which describe experimental results, are suggested.

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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

Authors
  1. N. V. Sharova
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  2. V. P. Gorelov
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Correspondence to N. V. Sharova.

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__________

Translated from Elektrokhimiya, Vol. 41, No. 10, 2005, pp. 1267–1271.

Original Russian Text Copyright © 2005 by Sharova, Gorelov.

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Sharova, N.V., Gorelov, V.P. Electroconduction and the Nature of Ionic Transport in BaZr0.95Nd0.05O3−δ . Russ J Electrochem 41, 1130–1134 (2005). https://doi.org/10.1007/s11175-005-0192-y

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  • DOI: https://doi.org/10.1007/s11175-005-0192-y

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