Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells

Nb(2)O(5) is added to a borosilicate sealing system to improve the thermo-mechanical stability of the sealing interface between the glass and Fe-Cr metallic interconnect (Crofer 22APU) in solid oxide fuel cells (SOFCs). The thermo-mechanical stability of the glass/metal interface is evaluated experi...

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Autores principales: Zhang, Qi, Du, Xinhang, Tan, Shengwei, Tang, Dian, Chen, Kongfa, Zhang, Teng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5509747/
https://www.ncbi.nlm.nih.gov/pubmed/28706195
http://dx.doi.org/10.1038/s41598-017-05725-y
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author Zhang, Qi
Du, Xinhang
Tan, Shengwei
Tang, Dian
Chen, Kongfa
Zhang, Teng
author_facet Zhang, Qi
Du, Xinhang
Tan, Shengwei
Tang, Dian
Chen, Kongfa
Zhang, Teng
author_sort Zhang, Qi
collection PubMed
description Nb(2)O(5) is added to a borosilicate sealing system to improve the thermo-mechanical stability of the sealing interface between the glass and Fe-Cr metallic interconnect (Crofer 22APU) in solid oxide fuel cells (SOFCs). The thermo-mechanical stability of the glass/metal interface is evaluated experimentally as well as by using a finite element analysis (FEA) method. The sealing glass doped with 4 mol.% Nb(2)O(5) shows the best thermo-mechanical stability, and the sealing couple of Crofer 22APU/glass/GDC (Gd(0.2)Ce(0.8)O(1.9)) remains intact after 50 thermal cycles. In addition, all sealing couples show good joining after being held at 750 °C for 1000 h. Moreover, the possible mechanism on the thermo-mechanical stability of sealing interface is investigated in terms of stress-based and energy-based perspectives.
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spelling pubmed-55097472017-07-17 Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells Zhang, Qi Du, Xinhang Tan, Shengwei Tang, Dian Chen, Kongfa Zhang, Teng Sci Rep Article Nb(2)O(5) is added to a borosilicate sealing system to improve the thermo-mechanical stability of the sealing interface between the glass and Fe-Cr metallic interconnect (Crofer 22APU) in solid oxide fuel cells (SOFCs). The thermo-mechanical stability of the glass/metal interface is evaluated experimentally as well as by using a finite element analysis (FEA) method. The sealing glass doped with 4 mol.% Nb(2)O(5) shows the best thermo-mechanical stability, and the sealing couple of Crofer 22APU/glass/GDC (Gd(0.2)Ce(0.8)O(1.9)) remains intact after 50 thermal cycles. In addition, all sealing couples show good joining after being held at 750 °C for 1000 h. Moreover, the possible mechanism on the thermo-mechanical stability of sealing interface is investigated in terms of stress-based and energy-based perspectives. Nature Publishing Group UK 2017-07-13 /pmc/articles/PMC5509747/ /pubmed/28706195 http://dx.doi.org/10.1038/s41598-017-05725-y Text en © The Author(s) 2017 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
Zhang, Qi
Du, Xinhang
Tan, Shengwei
Tang, Dian
Chen, Kongfa
Zhang, Teng
Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title_full Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title_fullStr Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title_full_unstemmed Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title_short Effect of Nb(2)O(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
title_sort effect of nb(2)o(5) doping on improving the thermo-mechanical stability of sealing interfaces for solid oxide fuel cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5509747/
https://www.ncbi.nlm.nih.gov/pubmed/28706195
http://dx.doi.org/10.1038/s41598-017-05725-y
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