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An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance
Lithium iron phosphate (LiFePO(4)) is one of the most widely used cathode materials of lithium ion batteries. However, its commercial binder polyvinylidene fluoride (PVDF) is costly, less environmental-friendly and unstable during the long cycling process because of the weak van der Waals forces bet...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055956/ https://www.ncbi.nlm.nih.gov/pubmed/35521137 http://dx.doi.org/10.1039/d0ra05095d |
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author | Zhao, Lingzhu Sun, Zhipeng Zhang, Hongbing Li, Yuli Mo, Yan Yu, Feng Chen, Yong |
author_facet | Zhao, Lingzhu Sun, Zhipeng Zhang, Hongbing Li, Yuli Mo, Yan Yu, Feng Chen, Yong |
author_sort | Zhao, Lingzhu |
collection | PubMed |
description | Lithium iron phosphate (LiFePO(4)) is one of the most widely used cathode materials of lithium ion batteries. However, its commercial binder polyvinylidene fluoride (PVDF) is costly, less environmental-friendly and unstable during the long cycling process because of the weak van der Waals forces between the PVDF binder and electrode materials. Herein, an aqueous binder was designed using methacrylate-modified gelatin through UV photo-crosslinking. The crosslinked network and specific functional groups (carboxyl and amino) of the gelatin binder are superior in stabilizing the LiFePO(4) electrode structure during long cycles by mitigating the formation of cracks and suppressing the detachment of electrode materials from the Al current collector. The LiFePO(4) electrode with gelatin binder displays a high capacity of 140.3 mA h g(−1) with 90.1% retention after 300 cycles at 0.5C, which are both superior to that of the PVDF binder (only 114.4 mA h g(−1) and 74.8%). This work provides a promising binder to replace the commercial PVDF binder for practical application in energy storage systems. |
format | Online Article Text |
id | pubmed-9055956 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90559562022-05-04 An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance Zhao, Lingzhu Sun, Zhipeng Zhang, Hongbing Li, Yuli Mo, Yan Yu, Feng Chen, Yong RSC Adv Chemistry Lithium iron phosphate (LiFePO(4)) is one of the most widely used cathode materials of lithium ion batteries. However, its commercial binder polyvinylidene fluoride (PVDF) is costly, less environmental-friendly and unstable during the long cycling process because of the weak van der Waals forces between the PVDF binder and electrode materials. Herein, an aqueous binder was designed using methacrylate-modified gelatin through UV photo-crosslinking. The crosslinked network and specific functional groups (carboxyl and amino) of the gelatin binder are superior in stabilizing the LiFePO(4) electrode structure during long cycles by mitigating the formation of cracks and suppressing the detachment of electrode materials from the Al current collector. The LiFePO(4) electrode with gelatin binder displays a high capacity of 140.3 mA h g(−1) with 90.1% retention after 300 cycles at 0.5C, which are both superior to that of the PVDF binder (only 114.4 mA h g(−1) and 74.8%). This work provides a promising binder to replace the commercial PVDF binder for practical application in energy storage systems. The Royal Society of Chemistry 2020-08-11 /pmc/articles/PMC9055956/ /pubmed/35521137 http://dx.doi.org/10.1039/d0ra05095d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zhao, Lingzhu Sun, Zhipeng Zhang, Hongbing Li, Yuli Mo, Yan Yu, Feng Chen, Yong An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title | An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title_full | An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title_fullStr | An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title_full_unstemmed | An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title_short | An environment-friendly crosslinked binder endowing LiFePO(4) electrode with structural integrity and long cycle life performance |
title_sort | environment-friendly crosslinked binder endowing lifepo(4) electrode with structural integrity and long cycle life performance |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055956/ https://www.ncbi.nlm.nih.gov/pubmed/35521137 http://dx.doi.org/10.1039/d0ra05095d |
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