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Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery
A membrane with both high ion conductivity and selectivity is critical to high power density and low-cost flow batteries, which are of great importance for the wide application of renewable energies. The trade-off between ion selectivity and conductivity is a bottleneck of ion conductive membranes....
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6946707/ https://www.ncbi.nlm.nih.gov/pubmed/31911625 http://dx.doi.org/10.1038/s41467-019-13704-2 |
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author | Dai, Qing Liu, Zhiqiang Huang, Ling Wang, Chao Zhao, Yuyue Fu, Qiang Zheng, Anmin Zhang, Huamin Li, Xianfeng |
author_facet | Dai, Qing Liu, Zhiqiang Huang, Ling Wang, Chao Zhao, Yuyue Fu, Qiang Zheng, Anmin Zhang, Huamin Li, Xianfeng |
author_sort | Dai, Qing |
collection | PubMed |
description | A membrane with both high ion conductivity and selectivity is critical to high power density and low-cost flow batteries, which are of great importance for the wide application of renewable energies. The trade-off between ion selectivity and conductivity is a bottleneck of ion conductive membranes. In this paper, a thin-film composite membrane with ultrathin polyamide selective layer is found to break the trade-off between ion selectivity and conductivity, and dramatically improve the power density of a flow battery. As a result, a vanadium flow battery with a thin-film composite membrane achieves energy efficiency higher than 80% at a current density of 260 mA cm(−2), which is the highest ever reported to the best of our knowledge. Combining experiments and theoretical calculation, we propose that the high performance is attributed to the proton transfer via Grotthuss mechanism and Vehicle mechanism in sub-1 nm pores of the ultrathin polyamide selective layer. |
format | Online Article Text |
id | pubmed-6946707 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-69467072020-01-09 Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery Dai, Qing Liu, Zhiqiang Huang, Ling Wang, Chao Zhao, Yuyue Fu, Qiang Zheng, Anmin Zhang, Huamin Li, Xianfeng Nat Commun Article A membrane with both high ion conductivity and selectivity is critical to high power density and low-cost flow batteries, which are of great importance for the wide application of renewable energies. The trade-off between ion selectivity and conductivity is a bottleneck of ion conductive membranes. In this paper, a thin-film composite membrane with ultrathin polyamide selective layer is found to break the trade-off between ion selectivity and conductivity, and dramatically improve the power density of a flow battery. As a result, a vanadium flow battery with a thin-film composite membrane achieves energy efficiency higher than 80% at a current density of 260 mA cm(−2), which is the highest ever reported to the best of our knowledge. Combining experiments and theoretical calculation, we propose that the high performance is attributed to the proton transfer via Grotthuss mechanism and Vehicle mechanism in sub-1 nm pores of the ultrathin polyamide selective layer. Nature Publishing Group UK 2020-01-07 /pmc/articles/PMC6946707/ /pubmed/31911625 http://dx.doi.org/10.1038/s41467-019-13704-2 Text en © The Author(s) 2020 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 Dai, Qing Liu, Zhiqiang Huang, Ling Wang, Chao Zhao, Yuyue Fu, Qiang Zheng, Anmin Zhang, Huamin Li, Xianfeng Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title | Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title_full | Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title_fullStr | Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title_full_unstemmed | Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title_short | Thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
title_sort | thin-film composite membrane breaking the trade-off between conductivity and selectivity for a flow battery |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6946707/ https://www.ncbi.nlm.nih.gov/pubmed/31911625 http://dx.doi.org/10.1038/s41467-019-13704-2 |
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