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Research Article | Open Access

Evaluation of stability and functionality of BaCe1-xInxO3-δ electrolyte in a wider range of indium concentration

Aleksandar MALEŠEVIĆa( ), Aleksandar RADOJKOVIĆa, Milan ŽUNIĆa, Aleksandra DAPČEVIĆb, Sanja PERAĆa, Zorica BRANKOVIĆa, Goran BRANKOVIĆa
Center of Excellence for Green Technologies, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
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Abstract

The properties of BaCe1-xInxO3-δ (x = 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, and 0.40) as proton conducting electrolyte are examined. The dense electrolyte is formed after sintering at 1300 ℃ for 5 h in air. The samples with In content ≥ 25 mol% contain In2O3 as a secondary phase. The highest total conductivity is around 5×10-3 S/cm for BaCe0.75In0.25O3-δ in the wet hydrogen atmosphere at 700 ℃. After exposure to pure CO2 atmosphere at 700 ℃ for 5 h, the concentrations of at least 15 mol% In can completely suppress degradation of the electrolyte. The power density of Ni-BaCe0.75In0.25O3-δ/BaCe0.75In0.25O3-δ/LSCF-BaCe0.75In0.25O3-δ fuel cell tested in wet hydrogen atmosphere reaches 264 mW/cm2 at 700 ℃. This result is an indication of stability and functionality of this electrolyte and its versatility in respect to type of fuel and performing environment.

Keywords

ionic conductivityperovskitefuel cellBaCeO3

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Journal of Advanced Ceramics
Volume 11 Issue 3,
March 2022
Pages 443-453
DOI: 10.1007/s40145-021-0547-1
Cite this article:
MALEŠEVIĆ A, RADOJKOVIĆ A, ŽUNIĆ M, et al. Evaluation of stability and functionality of BaCe1-xInxO3-δ electrolyte in a wider range of indium concentration. Journal of Advanced Ceramics, 2022, 11(3): 443-453. https://doi.org/10.1007/s40145-021-0547-1

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Received: 08 April 2021
Revised: 28 September 2021
Accepted: 16 October 2021
Published: 12 January 2022
© The Author(s) 2021.

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