Journal of Materials Science

, Volume 46, Issue 22, pp 7191–7197 | Cite as

Synthesis and characterization of chromium spinels as potential electrode support materials for intermediate temperature solid oxide fuel cells

  • E. StefanEmail author
  • J. T. S. Irvine
Hyceltec 2009


Several spinel compositions, i.e. Mn1+xCr2−xO4 (x = 0.7, 0.5, 0), MnFexCr2−xO4 (x = 0.1, 1), MgMnCrO4 and Mg1+xCr2−xO4 (x = 0, 0.1) were synthesised and studied in terms of phase analysis, density, stability in reducing atmosphere, electrical conductivity and thermal expansion behaviour. The spinel samples were single phase, with cell parameter values in a good correlation with cation sizes. Most of the studied spinels were found to be unstable under reducing conditions of thermal treatment, except MnCr2O4, MgCr2O4 and Mg1.1Cr1.9O4. Electrical properties have been investigated by impedance spectroscopy and DC conductivity measurements at temperatures between 200 and 900 °C.


Oxide Scale Solid Oxide Fuel Cell Yttrium Stabilize Zirconia Ferritic Stainless Steel Thermal Expansion Behaviour 



The authors would like to express their gratitude to the Office of Naval Research for financial support.


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© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.School of ChemistryUniversity of St. AndrewsSt. Andrews, FifeScotland, UK

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