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Wet chemical synthesis and characterisation of Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3 − δ proton conductor

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M. Naeem Khan, C. D. Savaniu, A. K. Azad, Peter Hing, J. T. S. Irvine

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Abstract

Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3 − δ (BSCZGY) proton conducting electrolyte material for intermediate temperature solid oxide fuel cells (IT-SOFCs) has been synthesized by a sol-gel modified Pechini process and its sinterability, thermal expansion, microstructure, ionic conductivity and chemical stability have been investigated. Ionic conductivity at 700 °C was measured to be ~ 8 × 10− 3 S cm− 1 in wet 5 vol.% H2/Ar atmospheres. Chemical stability test in pure CO2 up to 1200 °C shows that the material is highly stable; better than the stability of BaZr0.3Ce0.5Y0.1Yb0.1O3 − δ.
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Original languageEnglish
Pages (from-to)52-57
Number of pages6
JournalSolid State Ionics
Volume303
Early online date21 Feb 2017
DOIs
Publication statusPublished - May 2017

    Research areas

  • Sol-gel modified Pechini process, Sinterability, Ionic conductivity, Chemical stability

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