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Oxygen stoichiometry of Ba0.50Sr0.50Co0.80Fe0.20O3−δ obtained by EDTA–citrate method and measured by X-ray and neutron diffraction

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Abstract

The compound Ba0.50Sr0.50Co0.80Fe0.20O3–δ (BSCF) has been used as a good candidate for air electrodes in Intermediate Temperature Solid Oxide Fuel Cells. Present work deals with the oxygen vacancy of this compound synthesized by using the EDTA–Citrate method. To obtain a single-phase sample, three portions of the compound were calcined at 700, 800 and 900 °C. Only the sample calcined at 900 °C showed a single phase. The stoichiometry of the single-phase sample, in particular of the oxygen atom, was determined by applying the combined X-ray and neutron Rietveld refinement to X-ray and neutron powder diffraction patterns measured with the sample.

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Acknowledgments

The authors acknowledge the financial support given by the National Technological and Scientific Development Council (CNPq) of Brazil.

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Authors and Affiliations

  1. Instituto de Pesquisas Energéticas e Nucleares IPEN-CNEN/SP, Av. Professor Lineu Prestes, 2242, Cidade Universitária (USP), São Paulo, SP, CEP 05508-000, Brazil

    Everton Bonturim, Vera Lucia Mazzocchi, Carlos Benedicto Ramos Parente, José Mestnik-Filho, Nelson Batista de Lima & Emília Satoshi Miyamaru Seo

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  1. Everton Bonturim
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  2. Vera Lucia Mazzocchi
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  3. Carlos Benedicto Ramos Parente
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  4. José Mestnik-Filho
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  5. Nelson Batista de Lima
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  6. Emília Satoshi Miyamaru Seo
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Correspondence to Everton Bonturim.

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Bonturim, E., Mazzocchi, V.L., Parente, C.B.R. et al. Oxygen stoichiometry of Ba0.50Sr0.50Co0.80Fe0.20O3−δ obtained by EDTA–citrate method and measured by X-ray and neutron diffraction. J Radioanal Nucl Chem 306, 769–773 (2015). https://doi.org/10.1007/s10967-015-4310-3

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  • DOI: https://doi.org/10.1007/s10967-015-4310-3

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