Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers
The dependence of oxygen stoichiometry on the oxygen partial pressure and the temperature for La- and Nb-doped strontium ferrite La0.4Sr0.6Fe0.95Nb0.05O3 – δ (LSFNb5) was studied by quasi-equilibrium oxygen release (QEOR) method. The equilibrium diagram in the coordinates &ld...
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| Format: | Article |
| Language: | English |
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Saratov State University
2024-12-01
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| Series: | Электрохимическая энергетика |
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| Online Access: | https://energetica.sgu.ru/sites/energetica.sgu.ru/files/text-pdf/2024/12/electro202404_4-211-215.pdf |
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| author | Mamonova, Veronika Evgenevna Shubnikova, Elena V. Arapova, Marina Vasilievna Bragina, Olga A. Nemudry, Alexander P. |
| author_facet | Mamonova, Veronika Evgenevna Shubnikova, Elena V. Arapova, Marina Vasilievna Bragina, Olga A. Nemudry, Alexander P. |
| author_sort | Mamonova, Veronika Evgenevna |
| collection | DOAJ |
| description | The dependence of oxygen stoichiometry on the oxygen partial pressure and the temperature for La- and Nb-doped strontium ferrite La0.4Sr0.6Fe0.95Nb0.05O3 – δ (LSFNb5) was studied by quasi-equilibrium oxygen release (QEOR) method. The equilibrium diagram in the coordinates “T – lg(pO2 ) – 3 – δ” in the temperature range of 700–900°C and oxygen partial pressures pO2 = 10–4 – 0.2 atm was obtained. The range of stoichiometry deviation was determined, and the thermodynamic parameters of the oxygen release process were analyzed. |
| format | Article |
| id | doaj-art-73f549af9c224abea2dbf5ced7d33f5e |
| institution | DOAJ |
| issn | 1608-4039 1680-9505 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Saratov State University |
| record_format | Article |
| series | Электрохимическая энергетика |
| spelling | doaj-art-73f549af9c224abea2dbf5ced7d33f5e2025-08-20T02:39:59ZengSaratov State UniversityЭлектрохимическая энергетика1608-40391680-95052024-12-0124421121510.18500/1608-4039-2024-24-4-211-215Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzersMamonova, Veronika Evgenevna0Shubnikova, Elena V.1Arapova, Marina Vasilievna2Bragina, Olga A.3Nemudry, Alexander P.4Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS, 18, Kutateladze St., Novosibirsk, 630128Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS, 18, Kutateladze St., Novosibirsk, 630128Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS, 18, Kutateladze St., Novosibirsk, 630128Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS, 18, Kutateladze St., Novosibirsk, 630128Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS, 18, Kutateladze St., Novosibirsk, 630128The dependence of oxygen stoichiometry on the oxygen partial pressure and the temperature for La- and Nb-doped strontium ferrite La0.4Sr0.6Fe0.95Nb0.05O3 – δ (LSFNb5) was studied by quasi-equilibrium oxygen release (QEOR) method. The equilibrium diagram in the coordinates “T – lg(pO2 ) – 3 – δ” in the temperature range of 700–900°C and oxygen partial pressures pO2 = 10–4 – 0.2 atm was obtained. The range of stoichiometry deviation was determined, and the thermodynamic parameters of the oxygen release process were analyzed.https://energetica.sgu.ru/sites/energetica.sgu.ru/files/text-pdf/2024/12/electro202404_4-211-215.pdfnonstoichiometric oxideselectrode materialssolid oxide fuel cellselectrolyzersquasiequilibrium oxygen release |
| spellingShingle | Mamonova, Veronika Evgenevna Shubnikova, Elena V. Arapova, Marina Vasilievna Bragina, Olga A. Nemudry, Alexander P. Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers Электрохимическая энергетика nonstoichiometric oxides electrode materials solid oxide fuel cells electrolyzers quasiequilibrium oxygen release |
| title | Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| title_full | Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| title_fullStr | Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| title_full_unstemmed | Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| title_short | Quasi-equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| title_sort | quasi equilibrium oxygen release from oxides used as electrodes in solid oxide fuel cells and electrolyzers |
| topic | nonstoichiometric oxides electrode materials solid oxide fuel cells electrolyzers quasiequilibrium oxygen release |
| url | https://energetica.sgu.ru/sites/energetica.sgu.ru/files/text-pdf/2024/12/electro202404_4-211-215.pdf |
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