Cargando…
Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity
The sulfur cathode of lithium‐sulfur (Li‐S) batteries suffers from inherent problems of insufficient mechanical strength and the dissolution of sulfur and polysulfides. Inspired by the extraordinarily resilient and strong binding force of the Great Wall binder, that is, the sticky rice mortar, we ex...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10190977/ https://www.ncbi.nlm.nih.gov/pubmed/37324579 http://dx.doi.org/10.1002/EXP.20210131 |
_version_ | 1785043384080007168 |
---|---|
author | Hencz, Luke Chen, Hao Wu, Zhenzhen Qian, Shangshu Chen, Su Gu, Xingxing Liu, Xianhu Yan, Cheng Zhang, Shanqing |
author_facet | Hencz, Luke Chen, Hao Wu, Zhenzhen Qian, Shangshu Chen, Su Gu, Xingxing Liu, Xianhu Yan, Cheng Zhang, Shanqing |
author_sort | Hencz, Luke |
collection | PubMed |
description | The sulfur cathode of lithium‐sulfur (Li‐S) batteries suffers from inherent problems of insufficient mechanical strength and the dissolution of sulfur and polysulfides. Inspired by the extraordinarily resilient and strong binding force of the Great Wall binder, that is, the sticky rice mortar, we extracted highly branched amylopectin (HBA), the effective ingredient, as a low‐cost, nontoxic and environmentally benign aqueous binder for the sulfur cathode. The HBA‐based cells outperform the Li‐S batteries based on the traditional polyvinyldene diflouride (PVDF) binder and a lowly branched polysaccharide binder. The improved electrochemical performance in the HBA‐based cell could be attributed to two mechanisms. First, the branched structure of the HBA provides enhanced mechanical and adhesive properties, which allow for a robust electronic and ionic conductive framework to be maintained throughout the cathode after extended cycling. Second, the HBA shows enhanced polysulfide retention due to the polymer's abundant lone‐pair rich hydroxyl groups and the formation of C─S bonds between the HBA and polysulfides prohibits the shuttle effect of polysulfides. The improved mechanical properties and polysulfide retention function of the HBA binder facilitate the HBA‐based Li‐S battery to deliver a long cycle life of 500 cycles at 2 C while only displaying a capacity fading of 0.104% per cycle. |
format | Online Article Text |
id | pubmed-10190977 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-101909772023-06-14 Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity Hencz, Luke Chen, Hao Wu, Zhenzhen Qian, Shangshu Chen, Su Gu, Xingxing Liu, Xianhu Yan, Cheng Zhang, Shanqing Exploration (Beijing) Research Articles The sulfur cathode of lithium‐sulfur (Li‐S) batteries suffers from inherent problems of insufficient mechanical strength and the dissolution of sulfur and polysulfides. Inspired by the extraordinarily resilient and strong binding force of the Great Wall binder, that is, the sticky rice mortar, we extracted highly branched amylopectin (HBA), the effective ingredient, as a low‐cost, nontoxic and environmentally benign aqueous binder for the sulfur cathode. The HBA‐based cells outperform the Li‐S batteries based on the traditional polyvinyldene diflouride (PVDF) binder and a lowly branched polysaccharide binder. The improved electrochemical performance in the HBA‐based cell could be attributed to two mechanisms. First, the branched structure of the HBA provides enhanced mechanical and adhesive properties, which allow for a robust electronic and ionic conductive framework to be maintained throughout the cathode after extended cycling. Second, the HBA shows enhanced polysulfide retention due to the polymer's abundant lone‐pair rich hydroxyl groups and the formation of C─S bonds between the HBA and polysulfides prohibits the shuttle effect of polysulfides. The improved mechanical properties and polysulfide retention function of the HBA binder facilitate the HBA‐based Li‐S battery to deliver a long cycle life of 500 cycles at 2 C while only displaying a capacity fading of 0.104% per cycle. John Wiley and Sons Inc. 2022-01-24 /pmc/articles/PMC10190977/ /pubmed/37324579 http://dx.doi.org/10.1002/EXP.20210131 Text en © 2022 The Authors. Exploration published by Henan University and John Wiley & Sons Australia, Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Hencz, Luke Chen, Hao Wu, Zhenzhen Qian, Shangshu Chen, Su Gu, Xingxing Liu, Xianhu Yan, Cheng Zhang, Shanqing Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title | Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title_full | Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title_fullStr | Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title_full_unstemmed | Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title_short | Highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
title_sort | highly branched amylopectin binder for sulfur cathodes with enhanced performance and longevity |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10190977/ https://www.ncbi.nlm.nih.gov/pubmed/37324579 http://dx.doi.org/10.1002/EXP.20210131 |
work_keys_str_mv | AT henczluke highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT chenhao highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT wuzhenzhen highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT qianshangshu highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT chensu highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT guxingxing highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT liuxianhu highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT yancheng highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity AT zhangshanqing highlybranchedamylopectinbinderforsulfurcathodeswithenhancedperformanceandlongevity |