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Development of a Cathodic Material Based on Doped Strontium Cobaltite for Medium Temperature SOFC

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Abstract

The partial substitution of tantalum for cobalt in the SrCoO3 – δ structure is shown to result in suppression of the hexagonal phase formation and stabilization of the high-temperature cubic perovskite phase. Using ex situ high-temperature diffraction method, it is shown that perovskite SrCo0.9Ta0.1O3 – δ (SCT10) does not interact with the Ce0.8Gd0.2O2 – δ electrolyte commonly used in medium-temperature solid-oxide fuel cells. The SrCo0.9Ta0.1O3 – δ perovskite is found to exhibit transport characteristics necessary for being used as the cathodic material in medium-temperature solid-oxide fuel cells. A voltammetric characteristic of microtubular fuel cell with the SCT cathode is shown.

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Authors and Affiliations

  1. Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, 630128, Novosibirsk, Russia

    O. A. Bragina, A. S. Bagishev, N. V. Niftalieva, B. V. Voloshin, M. P. Popov & A. P. Nemudryi

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  1. O. A. Bragina
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  2. A. S. Bagishev
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  3. N. V. Niftalieva
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  4. B. V. Voloshin
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  5. M. P. Popov
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  6. A. P. Nemudryi
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Corresponding author

Correspondence to M. P. Popov.

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Translated by T. Safonova

Based on the paper presented at the XIV Meeting “Fundamental Problems of Solid State Ionics,” Chernogolovka (Russia), September 9–13, 2018.

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Bragina, O.A., Bagishev, A.S., Niftalieva, N.V. et al. Development of a Cathodic Material Based on Doped Strontium Cobaltite for Medium Temperature SOFC. Russ J Electrochem 55, 496–500 (2019). https://doi.org/10.1134/S1023193519060065

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  • DOI: https://doi.org/10.1134/S1023193519060065

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