Journal of Solid State Electrochemistry

, Volume 2, Issue 5, pp 308–314

Oxygen ionic transport in Bi2O3-based oxides: II. The Bi2O3–ZrO2–Y2O3 and Bi2O3–Nb2O5–Ho2O3 solid solutions

  • Aleksey A. Yaremchenko
  • Vladislav V. Kharton
  • Evgeny N. Naumovich
  • Anneta A. Tonoyan
  • Viktor V. Samokhval
ORIGINAL PAPER

DOI: 10.1007/s100080050105

Cite this article as:
Yaremchenko, A., Kharton, V., Naumovich, E. et al. J Solid State Electrochem (1998) 2: 308. doi:10.1007/s100080050105

Abstract

Electrical conductivity, fluorite-type cubic unit cell volume and thermal expansion of the (Bi1−xNbx)1−y HoyO1.5+δ (x=0.05 and 0.08; y=0.10−0.15) and (Bi1−xZrx)1−yYyO1.5+δ (x=0.05 and 0.07; y=0.15) solid solutions have been found to decrease regularly with increasing dopant content. Annealing at temperatures below 900 K leads to a phase decomposition and to a sharp decrease in conductivity of the ceramics. Oxygen ion transference numbers have been determined by the e.m.f. method and by Faradaic efficiency measurement to exceed 0.9. A new technique of studying Faradaic efficiency has been proposed and verified using (Bi0.95Zr0.05)0.85Y0.15O1.5+δ and Zr0.90Y0.10O1.95 ceramic samples.

Key words Oxygen ionic conductivity Bismuth oxide Transference numbers Faradaic efficiency Thermal expansion 

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Aleksey A. Yaremchenko
    • 1
  • Vladislav V. Kharton
    • 1
  • Evgeny N. Naumovich
    • 1
  • Anneta A. Tonoyan
    • 1
  • Viktor V. Samokhval
    • 1
  1. 1.Institute of Physicochemical Problems, Belarus State University, 14 Leningradskaya Str., 220080, Minsk, Republic of Belarus Tel.: +375-17-2207681; Fax: +375-17-2264696; e-mail: kharton@fhp.bsu.unibel.by or nen@basnet.minsk.by

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