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Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode
Cathode thickness plays a major role in establishing an active area for an oxygen reduction reaction in energy converter devices, such as solid oxide fuel cells. In this work, we prepared SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) composite cathodes with different layers (1×, 3×, 5×, 7×, and 9× lay...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030850/ https://www.ncbi.nlm.nih.gov/pubmed/35458750 http://dx.doi.org/10.3390/molecules27082549 |
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author | Abd Aziz, Azreen Junaida Baharuddin, Nurul Akidah Somalu, Mahendra Rao Muchtar, Andanastuti |
author_facet | Abd Aziz, Azreen Junaida Baharuddin, Nurul Akidah Somalu, Mahendra Rao Muchtar, Andanastuti |
author_sort | Abd Aziz, Azreen Junaida |
collection | PubMed |
description | Cathode thickness plays a major role in establishing an active area for an oxygen reduction reaction in energy converter devices, such as solid oxide fuel cells. In this work, we prepared SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) composite cathodes with different layers (1×, 3×, 5×, 7×, and 9× layer). The microstructural and electrochemical performance of each cell was then explored through scanning electron microscopy and electrochemical impedance spectroscopy (EIS). EIS analysis showed that the area-specific resistance (ASR) decreased from 0.65 Ωcm(2) to 0.12 Ωcm(2) with the increase in the number of layers from a 1× to a 7×. However, the ASR started to slightly increase at the 9× layer to 2.95 Ωcm(2) due to a higher loss of electrode polarization resulting from insufficient gas diffusion and transport. Therefore, increasing the number of cathode layers could increase the performance of the cathode by enlarging the active area for the reaction up to the threshold point. |
format | Online Article Text |
id | pubmed-9030850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-90308502022-04-23 Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode Abd Aziz, Azreen Junaida Baharuddin, Nurul Akidah Somalu, Mahendra Rao Muchtar, Andanastuti Molecules Communication Cathode thickness plays a major role in establishing an active area for an oxygen reduction reaction in energy converter devices, such as solid oxide fuel cells. In this work, we prepared SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) composite cathodes with different layers (1×, 3×, 5×, 7×, and 9× layer). The microstructural and electrochemical performance of each cell was then explored through scanning electron microscopy and electrochemical impedance spectroscopy (EIS). EIS analysis showed that the area-specific resistance (ASR) decreased from 0.65 Ωcm(2) to 0.12 Ωcm(2) with the increase in the number of layers from a 1× to a 7×. However, the ASR started to slightly increase at the 9× layer to 2.95 Ωcm(2) due to a higher loss of electrode polarization resulting from insufficient gas diffusion and transport. Therefore, increasing the number of cathode layers could increase the performance of the cathode by enlarging the active area for the reaction up to the threshold point. MDPI 2022-04-14 /pmc/articles/PMC9030850/ /pubmed/35458750 http://dx.doi.org/10.3390/molecules27082549 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 | Communication Abd Aziz, Azreen Junaida Baharuddin, Nurul Akidah Somalu, Mahendra Rao Muchtar, Andanastuti Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title | Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title_full | Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title_fullStr | Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title_full_unstemmed | Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title_short | Layering Optimization of the SrFe(0.9)Ti(0.1)O(3−δ)–Ce(0.8)Sm(0.2)O(1.9) Composite Cathode |
title_sort | layering optimization of the srfe(0.9)ti(0.1)o(3−δ)–ce(0.8)sm(0.2)o(1.9) composite cathode |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030850/ https://www.ncbi.nlm.nih.gov/pubmed/35458750 http://dx.doi.org/10.3390/molecules27082549 |
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