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Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells

Solid oxide cells (SOC) with a symmetrical configuration have been focused due to the practical benefits of such configurations, such as minimized compatibility issues, a simple fabrication process and reduced cost compared to SOCs with the asymmetrical configuration. However, the performance of SOC...

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Autores principales: Kim, Seona, Lee, Seungtae, Kim, Junyoung, Shin, Jeeyoung, Kim, Guntae
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6249295/
https://www.ncbi.nlm.nih.gov/pubmed/30464228
http://dx.doi.org/10.1038/s41598-018-35659-y
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author Kim, Seona
Lee, Seungtae
Kim, Junyoung
Shin, Jeeyoung
Kim, Guntae
author_facet Kim, Seona
Lee, Seungtae
Kim, Junyoung
Shin, Jeeyoung
Kim, Guntae
author_sort Kim, Seona
collection PubMed
description Solid oxide cells (SOC) with a symmetrical configuration have been focused due to the practical benefits of such configurations, such as minimized compatibility issues, a simple fabrication process and reduced cost compared to SOCs with the asymmetrical configuration. However, the performance of SOCs using a single type of electrode material (symmetrical configuration) is lower than the performance of those using the dissimilar electrode materials (asymmetrical configuration). Therefore, to achieve a high-performance cell, we design a ‘self-transforming cell’ with the asymmetric configuration using only materials of the single type, one based on atmospheric adaptive materials. Atmospheric-adaptive perovskite Pr(0.5)Ba(0.5)Mn(0.85)Co(0.15)O(3-δ) (PBMCo) was used for the so-called self-transforming cell electrodes, which changed to layered perovskite and metal in the fuel atmosphere and retained its original structure in the air atmosphere. In fuel cell mods, the self-transforming cell shows excellent electrochemical performance of 1.10 W cm(−2) at 800 °C and good stability for 100 h without any catalyst. In electrolysis mode, the moderate current densities of −0.42 A cm(−2) for 3 vol.% H(2)O and −0.62 A cm(−2) for 10 vol.% H(2)O, respectively, were observed at a cell voltage of 1.3 V at 800 °C. In the reversible cycling test, the transforming cell maintains the constant voltages for 30 h at +/− 0.2 A cm(−2) under 10 vol. % H(2)O.
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spelling pubmed-62492952018-11-28 Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells Kim, Seona Lee, Seungtae Kim, Junyoung Shin, Jeeyoung Kim, Guntae Sci Rep Article Solid oxide cells (SOC) with a symmetrical configuration have been focused due to the practical benefits of such configurations, such as minimized compatibility issues, a simple fabrication process and reduced cost compared to SOCs with the asymmetrical configuration. However, the performance of SOCs using a single type of electrode material (symmetrical configuration) is lower than the performance of those using the dissimilar electrode materials (asymmetrical configuration). Therefore, to achieve a high-performance cell, we design a ‘self-transforming cell’ with the asymmetric configuration using only materials of the single type, one based on atmospheric adaptive materials. Atmospheric-adaptive perovskite Pr(0.5)Ba(0.5)Mn(0.85)Co(0.15)O(3-δ) (PBMCo) was used for the so-called self-transforming cell electrodes, which changed to layered perovskite and metal in the fuel atmosphere and retained its original structure in the air atmosphere. In fuel cell mods, the self-transforming cell shows excellent electrochemical performance of 1.10 W cm(−2) at 800 °C and good stability for 100 h without any catalyst. In electrolysis mode, the moderate current densities of −0.42 A cm(−2) for 3 vol.% H(2)O and −0.62 A cm(−2) for 10 vol.% H(2)O, respectively, were observed at a cell voltage of 1.3 V at 800 °C. In the reversible cycling test, the transforming cell maintains the constant voltages for 30 h at +/− 0.2 A cm(−2) under 10 vol. % H(2)O. Nature Publishing Group UK 2018-11-21 /pmc/articles/PMC6249295/ /pubmed/30464228 http://dx.doi.org/10.1038/s41598-018-35659-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kim, Seona
Lee, Seungtae
Kim, Junyoung
Shin, Jeeyoung
Kim, Guntae
Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title_full Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title_fullStr Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title_full_unstemmed Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title_short Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells
title_sort self-transforming configuration based on atmospheric-adaptive materials for solid oxide cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6249295/
https://www.ncbi.nlm.nih.gov/pubmed/30464228
http://dx.doi.org/10.1038/s41598-018-35659-y
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