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Study of High-Temperature Oxygen Release from Strontium Cobaltite in Quasi-Equilibrium Regime

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Abstract

Results of high-temperature oxygen desorption from SrCoO3 – δ-oxide with mixed conductivity composed of obtained using an original quasi-equilibrium oxygen release technique are shown. The measurements are carried out with a characterized powder sample in a tubular reactor. The equilibrium phase diagram of the oxide in the 600–850°C temperature range and partial pressure of oxygen 0.2–6 × 10–5 atm is constructed. With the help of literature data, a correlation of phase diagram regions with their corresponding structures is obtained.

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Funding

This work was supported by the Russian Science Foundation, grant no. 22-73-10200, https://rscf.ru/project/22-73-10200/.

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Authors and Affiliations

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

    M. P. Popov, A. S. Bagishev & A. P. Nemudry

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  1. M. P. Popov
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  2. A. S. Bagishev
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  3. A. P. Nemudry
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Correspondence to M. P. Popov.

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Translated by Yu. Pleskov

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Based on the materials reported at the Second School for Young Scientists “Electrochemical Devices: Processes, Materials, Technologies” (Novosibirsk, October 28–30, 2022)

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Popov, M.P., Bagishev, A.S. & Nemudry, A.P. Study of High-Temperature Oxygen Release from Strontium Cobaltite in Quasi-Equilibrium Regime. Russ J Electrochem 60, 25–29 (2024). https://doi.org/10.1134/S1023193524010075

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