Journal of Solid State Electrochemistry

, Volume 23, Issue 11, pp 3165–3171 | Cite as

High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ

  • O. V. MerkulovEmail author
  • A. A. Markov
  • I. A. Leonidov
  • M. V. Patrakeev
Original Paper


The comparative study of transport characteristics of SrFe0.75Mo0.25O3 − δ and Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ was carried out in order to evaluate calcium substitution usability to improve functional properties of electrode materials based on SrFe1 − xMoxO3 − δ. The electrical conductivity in CaxSr1 − xFe0.75Mo0.25O3 − δ was measured as a function of oxygen partial pressure varying in the range of 10−21–0.5 atm at the temperature range of 750–950 °C. The thermogravimetric measurements have revealed that calcium substitution results in a decrease of oxygen content in SrFe0.75Mo0.25O3 − δ. The conductivity and oxygen content analysis has shown that calcium introduction in SrFe0.75Mo0.25O3 − δ provides about 30% conductivity increase under reducing conditions attributed to an increase in both concentration and mobility of n-type charge carriers. In contrast, hole conduction has been found unaffected by calcium content in CaxSr1 − xFe0.75Mo0.25O3 − δ. The improved electrical conductivity in Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ under reducing conditions calls for testing this oxide as an anode material.


Perovskite Mixed conductors Anode materials Electron mobility 



The authors are grateful to the Russian Science Foundation (project 17-79-30071) for the support of this work.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Institute of Solid State ChemistryUB RASEkaterinburgRussia

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