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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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) and (ZrO(2))(0.90)(Sc(2)O(3))(0.08)(Yb(2)O(3))(0.02) single-crystal membranes were studied. Such membrane lifetime testing is c...

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Autores principales: Agarkov, Dmitrii, Borik, Mikhail, Komarov, Boris, Korableva, Galina, Kulebyakin, Alexey, Kuritsyna, Irina, Lomonova, Elena, Milovich, Filipp, Myzina, Valentina, Tabachkova, Nataliya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300815/
https://www.ncbi.nlm.nih.gov/pubmed/37367790
http://dx.doi.org/10.3390/membranes13060586
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author Agarkov, Dmitrii
Borik, Mikhail
Komarov, Boris
Korableva, Galina
Kulebyakin, Alexey
Kuritsyna, Irina
Lomonova, Elena
Milovich, Filipp
Myzina, Valentina
Tabachkova, Nataliya
author_facet Agarkov, Dmitrii
Borik, Mikhail
Komarov, Boris
Korableva, Galina
Kulebyakin, Alexey
Kuritsyna, Irina
Lomonova, Elena
Milovich, Filipp
Myzina, Valentina
Tabachkova, Nataliya
author_sort Agarkov, Dmitrii
collection PubMed
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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) and (ZrO(2))(0.90)(Sc(2)O(3))(0.08)(Yb(2)O(3))(0.02) 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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) composition showed long-term conductivity stability (conductivity degradation not more than 4%). Long-term high-temperature aging of the (ZrO(2))(0.90)(Sc(2)O(3))(0.08)(Yb(2)O(3))(0.02) 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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) composition can be considered a promising material for practical use as a solid electrolyte in SOFCs.
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spelling pubmed-103008152023-06-29 Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia Agarkov, Dmitrii Borik, Mikhail Komarov, Boris Korableva, Galina Kulebyakin, Alexey Kuritsyna, Irina Lomonova, Elena Milovich, Filipp Myzina, Valentina Tabachkova, Nataliya Membranes (Basel) Article The effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) and (ZrO(2))(0.90)(Sc(2)O(3))(0.08)(Yb(2)O(3))(0.02) 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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) composition showed long-term conductivity stability (conductivity degradation not more than 4%). Long-term high-temperature aging of the (ZrO(2))(0.90)(Sc(2)O(3))(0.08)(Yb(2)O(3))(0.02) 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(2))(0.90)(Sc(2)O(3))(0.09)(Yb(2)O(3))(0.01) composition can be considered a promising material for practical use as a solid electrolyte in SOFCs. MDPI 2023-06-06 /pmc/articles/PMC10300815/ /pubmed/37367790 http://dx.doi.org/10.3390/membranes13060586 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Agarkov, Dmitrii
Borik, Mikhail
Komarov, Boris
Korableva, Galina
Kulebyakin, Alexey
Kuritsyna, Irina
Lomonova, Elena
Milovich, Filipp
Myzina, Valentina
Tabachkova, Nataliya
Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300815/
https://www.ncbi.nlm.nih.gov/pubmed/37367790
http://dx.doi.org/10.3390/membranes13060586
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