Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia
The effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3...
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MDPI AG
2023-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/6/586 |
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| author | Dmitrii Agarkov Mikhail Borik Boris Komarov Galina Korableva Alexey Kulebyakin Irina Kuritsyna Elena Lomonova Filipp Milovich Valentina Myzina Nataliya Tabachkova |
| author_facet | Dmitrii Agarkov Mikhail Borik Boris Komarov Galina Korableva Alexey Kulebyakin Irina Kuritsyna Elena Lomonova Filipp Milovich Valentina Myzina Nataliya Tabachkova |
| author_sort | Dmitrii Agarkov |
| collection | DOAJ |
| description | The effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> and (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.08</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.02</sub> single-crystal membranes were studied. Such membrane lifetime testing is critical to the operation of solid oxide fuel cells (SOFCs). The crystals were obtained by the method of directional crystallization of the melt in a cold crucible. The phase composition and structure of the membranes before and after aging were studied using X-ray diffraction and Raman spectroscopy. The conductivities of the samples were measured using the impedance spectroscopy technique. The (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> composition showed long-term conductivity stability (conductivity degradation not more than 4%). Long-term high-temperature aging of the (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.08</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.02</sub> composition initiates the t″ → t′ phase transformation. In this case, a sharp decrease in conductivity of up to 55% was observed. The data obtained demonstrate a clear correlation between the specific conductivity and the change in the phase composition. The (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> composition can be considered a promising material for practical use as a solid electrolyte in SOFCs. |
| first_indexed | 2024-03-11T02:10:41Z |
| format | Article |
| id | doaj.art-b27fd5fd0eee4a659477951904248a12 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T02:10:41Z |
| publishDate | 2023-06-01 |
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| series | Membranes |
| spelling | doaj.art-b27fd5fd0eee4a659477951904248a122023-11-18T11:33:41ZengMDPI AGMembranes2077-03752023-06-0113658610.3390/membranes13060586Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with YtterbiaDmitrii Agarkov0Mikhail Borik1Boris Komarov2Galina Korableva3Alexey Kulebyakin4Irina Kuritsyna5Elena Lomonova6Filipp Milovich7Valentina Myzina8Nataliya Tabachkova9Osipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaOsipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaOsipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaDepartment of Materials Science, Moscow Polytechnic University, Bolshaya Semyonovskaya Str., 38, 107023 Moscow, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaProkhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, RussiaThe effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> and (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.08</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.02</sub> single-crystal membranes were studied. Such membrane lifetime testing is critical to the operation of solid oxide fuel cells (SOFCs). The crystals were obtained by the method of directional crystallization of the melt in a cold crucible. The phase composition and structure of the membranes before and after aging were studied using X-ray diffraction and Raman spectroscopy. The conductivities of the samples were measured using the impedance spectroscopy technique. The (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> composition showed long-term conductivity stability (conductivity degradation not more than 4%). Long-term high-temperature aging of the (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.08</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.02</sub> composition initiates the t″ → t′ phase transformation. In this case, a sharp decrease in conductivity of up to 55% was observed. The data obtained demonstrate a clear correlation between the specific conductivity and the change in the phase composition. The (ZrO<sub>2</sub>)<sub>0.90</sub>(Sc<sub>2</sub>O<sub>3</sub>)<sub>0.09</sub>(Yb<sub>2</sub>O<sub>3</sub>)<sub>0.01</sub> composition can be considered a promising material for practical use as a solid electrolyte in SOFCs.https://www.mdpi.com/2077-0375/13/6/586zirconia membranesSOFCsingle crystalstructureconductivity |
| spellingShingle | Dmitrii Agarkov Mikhail Borik Boris Komarov Galina Korableva Alexey Kulebyakin Irina Kuritsyna Elena Lomonova Filipp Milovich Valentina Myzina Nataliya Tabachkova Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia Membranes zirconia membranes SOFC single crystal structure conductivity |
| title | Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia |
| title_full | Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia |
| title_fullStr | Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia |
| title_full_unstemmed | Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia |
| title_short | Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia |
| title_sort | long term conductivity stability of electrolytic membranes of scandia stabilized zirconia co doped with ytterbia |
| topic | zirconia membranes SOFC single crystal structure conductivity |
| url | https://www.mdpi.com/2077-0375/13/6/586 |
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