Crystal Structure and Properties of Gd1-xSrxCo1-yFeyO3-δ Oxides as Promising Materials for Catalytic and SOFC Application
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Crystal Structure and Properties of Gd1-xSrxCo1-yFeyO3-δ Oxides as Promising Materials for Catalytic and SOFC Application
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| Автор |
Aksenova, T. V.
Mysik, D. K. Cherepanov, V. A. |
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| Тематика |
CONDUCTIVITY
CRYSTAL STRUCTURE OXYGEN NONSTOICHIOMETRY SOLID SOLUTION THERMOGRAVIMETRIC ANALYSIS X-RAY DIFFRACTION |
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| Описание |
A series of samples with the overall composition Gd1-xSrxCo1-yFeyO3-δ (x = 0.8; 0.9 and 0.1 ≤ y ≤ 0.9), which are promising materials for catalytic and SOFC application, was prepared by a glycerol nitrate technique. X-ray diffraction analysis allowed to describe Gd0.2Sr0.8Co1-yFeyO3-δ with 0.1 ≤ y ≤ 0.5 in a tetragonal 2ap × 2ap × 4ap superstructure (SG I4/mmm), while oxides with 0.6 ≤ y ≤ 0.9 exhibit cubic disordered perovskite structure (SG Pm-3m). All Gd0.1Sr0.9Fe1-yCoyO3-δ oxides within the composition range 0.1 ≤ y ≤ 0.9 possess the cubic perovskite structure (SG Pm-3m). The structural parameters were refined using the Rietveld full-profile method. The changes of oxygen content in Gd1-xSrxCo1-yFeyO3-δ versus temperature were determined by thermogravimetric analysis. The introduction of iron into the cobalt sublattice leads to a gradual increase in the unit cell parameters and unit cell volume, accompanied with increasing oxygen content. The temperature dependency of conductivity for Gd0.2Sr0.8Co0.3Fe0.7O3-δ exhibits a maximum (284 S/cm) at ≈600 K in air. The positive value of the Seebeck coefficient indicates predominant p-type conductivity in the Gd0.2Sr0.8Co0.3Fe0.7O3-δ complex oxide. © 2022 by the authors.
Ministry of Education and Science of the Russian Federation, Minobrnauka, (AAAA-A20-120061990010-7) The work was financially supported by the Ministry of Science and Higher Education of Russian Federation (State Task number AAAA-A20-120061990010-7). |
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| Дата |
2024-04-08T11:08:00Z
2024-04-08T11:08:00Z 2022 |
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Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Aksenova, TV, Mysik, DK & Cherepanov, VA 2022, 'Crystal Structure and Properties of Gd1-xSrxCo1-yFeyO3-δ Oxides as Promising Materials for Catalytic and SOFC Application', Catalysts, Том. 12, № 11, 1344. https://doi.org/10.3390/catal12111344
Aksenova, T. V., Mysik, D. K., & Cherepanov, V. A. (2022). Crystal Structure and Properties of Gd1-xSrxCo1-yFeyO3-δ Oxides as Promising Materials for Catalytic and SOFC Application. Catalysts, 12(11), [1344]. https://doi.org/10.3390/catal12111344 2073-4344 Final All Open Access; Gold Open Access https://www.mdpi.com/2073-4344/12/11/1344/pdf?version=1667524637 https://www.mdpi.com/2073-4344/12/11/1344/pdf?version=1667524637 http://elar.urfu.ru/handle/10995/131552 10.3390/catal12111344 85141731366 000883850100001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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application/pdf
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MDPI
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Catalysts
Catalysts |
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