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Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries

Lithium–sulfur (Li-S) batteries, due to their high theoretical capacity, intrinsic overcharge protection, and low cost, are considered as the most promising candidates for next-generation energy storage systems. To promote widespread use of Li-S batteries, various tactics have been reported to impro...

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Detalles Bibliográficos
Autores principales: Jiang, Min, Gan, Bingqing, Deng, Yongqi, Xiong, Yin, Tan, Ruixuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337404/
https://www.ncbi.nlm.nih.gov/pubmed/30585220
http://dx.doi.org/10.3390/ma12010064
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author Jiang, Min
Gan, Bingqing
Deng, Yongqi
Xiong, Yin
Tan, Ruixuan
author_facet Jiang, Min
Gan, Bingqing
Deng, Yongqi
Xiong, Yin
Tan, Ruixuan
author_sort Jiang, Min
collection PubMed
description Lithium–sulfur (Li-S) batteries, due to their high theoretical capacity, intrinsic overcharge protection, and low cost, are considered as the most promising candidates for next-generation energy storage systems. To promote widespread use of Li-S batteries, various tactics have been reported to improve the columbic efficiency and to suppress the shuttle effect. Herein, we report a novel polymeric sulfur via heat radical polymerization, for the Li-S battery. The insolubles after CS(2) washing, and the changes in XRD (X-ray diffraction) results imply the formation of polymeric sulfur. Owing to the absence of cyclic S(8) molecular, the shuttle effect is depressed, and the polymeric sulfur cathodes exhibit lower self-discharge rates, higher sulfur utilization, better rates of performance, and enhanced cycling stabilities than the commercial sublimed sulfur. Thus, polymeric sulfur provides a new train of thought and tactics for restricting the formation of the dissolution of polysulfides, and self-discharge.
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spelling pubmed-63374042019-01-22 Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries Jiang, Min Gan, Bingqing Deng, Yongqi Xiong, Yin Tan, Ruixuan Materials (Basel) Article Lithium–sulfur (Li-S) batteries, due to their high theoretical capacity, intrinsic overcharge protection, and low cost, are considered as the most promising candidates for next-generation energy storage systems. To promote widespread use of Li-S batteries, various tactics have been reported to improve the columbic efficiency and to suppress the shuttle effect. Herein, we report a novel polymeric sulfur via heat radical polymerization, for the Li-S battery. The insolubles after CS(2) washing, and the changes in XRD (X-ray diffraction) results imply the formation of polymeric sulfur. Owing to the absence of cyclic S(8) molecular, the shuttle effect is depressed, and the polymeric sulfur cathodes exhibit lower self-discharge rates, higher sulfur utilization, better rates of performance, and enhanced cycling stabilities than the commercial sublimed sulfur. Thus, polymeric sulfur provides a new train of thought and tactics for restricting the formation of the dissolution of polysulfides, and self-discharge. MDPI 2018-12-25 /pmc/articles/PMC6337404/ /pubmed/30585220 http://dx.doi.org/10.3390/ma12010064 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Min
Gan, Bingqing
Deng, Yongqi
Xiong, Yin
Tan, Ruixuan
Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title_full Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title_fullStr Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title_full_unstemmed Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title_short Suppressing Self-Discharge with Polymeric Sulfur in Li-S Batteries
title_sort suppressing self-discharge with polymeric sulfur in li-s batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337404/
https://www.ncbi.nlm.nih.gov/pubmed/30585220
http://dx.doi.org/10.3390/ma12010064
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