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Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)

The high efficiency of solid oxide fuel cells with La(0.8)Sr(0.2)MnO(3−δ) (LSM) cathodes working in the range of 800–1000 °C, rapidly decreases below 800 °C. The goal of this study is to improve the properties of LSM cathodes working in the range of 500–800 °C by the addition of YFe(0.5)Co(0.5)O(3)...

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Autores principales: Mosiałek, Michał, Zimowska, Małgorzata, Kharytonau, Dzmitry, Komenda, Anna, Górski, Miłosz, Krzan, Marcel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8779859/
https://www.ncbi.nlm.nih.gov/pubmed/35057359
http://dx.doi.org/10.3390/ma15020642
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author Mosiałek, Michał
Zimowska, Małgorzata
Kharytonau, Dzmitry
Komenda, Anna
Górski, Miłosz
Krzan, Marcel
author_facet Mosiałek, Michał
Zimowska, Małgorzata
Kharytonau, Dzmitry
Komenda, Anna
Górski, Miłosz
Krzan, Marcel
author_sort Mosiałek, Michał
collection PubMed
description The high efficiency of solid oxide fuel cells with La(0.8)Sr(0.2)MnO(3−δ) (LSM) cathodes working in the range of 800–1000 °C, rapidly decreases below 800 °C. The goal of this study is to improve the properties of LSM cathodes working in the range of 500–800 °C by the addition of YFe(0.5)Co(0.5)O(3) (YFC). Monophasic YFC is synthesized and sintered at 950 °C. Composite cathodes are prepared on Ce(0.8)Sm(0.2)O(1.9) electrolyte disks using pastes containing YFC and LSM powders mixed in 0:1, 1:19, and 1:1 weight ratios denoted LSM, LSM1, and LSM1, respectively. X-ray diffraction patterns of tested composites reveal the presence of pure perovskite phases in samples sintered at 950 °C and the presence of Sr(4)Fe(4)O(11), YMnO(3), and La(0.775)Sr(0.225)MnO(3.047) phases in samples sintered at 1100 °C. Electrochemical impedance spectroscopy reveals that polarization resistance increases from LSM1, by LSM, to LSM2. Differences in polarization resistance increase with decreasing operating temperatures because activation energy rises in the same order and equals to 1.33, 1.34, and 1.58 eV for LSM1, LSM, and LSM2, respectively. The lower polarization resistance of LSM1 electrodes is caused by the lower resistance associated with the charge transfer process.
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spelling pubmed-87798592022-01-22 Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3) Mosiałek, Michał Zimowska, Małgorzata Kharytonau, Dzmitry Komenda, Anna Górski, Miłosz Krzan, Marcel Materials (Basel) Article The high efficiency of solid oxide fuel cells with La(0.8)Sr(0.2)MnO(3−δ) (LSM) cathodes working in the range of 800–1000 °C, rapidly decreases below 800 °C. The goal of this study is to improve the properties of LSM cathodes working in the range of 500–800 °C by the addition of YFe(0.5)Co(0.5)O(3) (YFC). Monophasic YFC is synthesized and sintered at 950 °C. Composite cathodes are prepared on Ce(0.8)Sm(0.2)O(1.9) electrolyte disks using pastes containing YFC and LSM powders mixed in 0:1, 1:19, and 1:1 weight ratios denoted LSM, LSM1, and LSM1, respectively. X-ray diffraction patterns of tested composites reveal the presence of pure perovskite phases in samples sintered at 950 °C and the presence of Sr(4)Fe(4)O(11), YMnO(3), and La(0.775)Sr(0.225)MnO(3.047) phases in samples sintered at 1100 °C. Electrochemical impedance spectroscopy reveals that polarization resistance increases from LSM1, by LSM, to LSM2. Differences in polarization resistance increase with decreasing operating temperatures because activation energy rises in the same order and equals to 1.33, 1.34, and 1.58 eV for LSM1, LSM, and LSM2, respectively. The lower polarization resistance of LSM1 electrodes is caused by the lower resistance associated with the charge transfer process. MDPI 2022-01-15 /pmc/articles/PMC8779859/ /pubmed/35057359 http://dx.doi.org/10.3390/ma15020642 Text en © 2022 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
Mosiałek, Michał
Zimowska, Małgorzata
Kharytonau, Dzmitry
Komenda, Anna
Górski, Miłosz
Krzan, Marcel
Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title_full Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title_fullStr Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title_full_unstemmed Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title_short Improvement of La(0.8)Sr(0.2)MnO(3−δ) Cathode Material for Solid Oxide Fuel Cells by Addition of YFe(0.5)Co(0.5)O(3)
title_sort improvement of la(0.8)sr(0.2)mno(3−δ) cathode material for solid oxide fuel cells by addition of yfe(0.5)co(0.5)o(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8779859/
https://www.ncbi.nlm.nih.gov/pubmed/35057359
http://dx.doi.org/10.3390/ma15020642
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