The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design

The dissolution of polysulfides is widely considered to be a major obstacle for developing lithium-sulfur batteries (LSBs) because it results in a shuttle effect. A popular strategy to address this issue is preventing polysulfide dissolution, e.g., trapping/confining polysulfides in porous carbons....

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Main Authors: Yu, Linghui, Ong, Samuel Jun Hoong, Liu, Xianhu, Mandler, Daniel, Xu, Jason Zhichuan
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/155660
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1556602023-07-14T16:02:12Z The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design Yu, Linghui Ong, Samuel Jun Hoong Liu, Xianhu Mandler, Daniel Xu, Jason Zhichuan School of Materials Science and Engineering Campus for Research Excellence and Technological Enterprise (CREATE) Engineering::Materials Energy Storage Lithium-Sulfur Battery The dissolution of polysulfides is widely considered to be a major obstacle for developing lithium-sulfur batteries (LSBs) because it results in a shuttle effect. A popular strategy to address this issue is preventing polysulfide dissolution, e.g., trapping/confining polysulfides in porous carbons. However, this conflicts with the advantage of commonly used ether-based electrolytes, i.e., the dissolution of polysulfides in such electrolytes is beneficial for delivering Li+ to sulfur-based species compared to sluggish solid-state transport. Thus, a question is raised on the feasibility of the strategy to prevent polysulfide dissolution. Here, it is shown that the dissolution of polysulfides in ether-based electrolytes is necessary for a high capacity, suggesting that it might not be right to prevent the dissolution of polysulfides in such electrolytes. Thus, other approaches should be developed. A perspective is hence provided for designing electrolyte/cathode for high-energy LSBs. Ministry of Education (MOE) National Research Foundation (NRF) Submitted/Accepted version This research was supported by the National Research Foundation, Prime Minister’s Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) program. The work was partially supported by the Singapore Ministry of Education Tier 1 grant (2019-T1-002- 125). 2022-03-10T01:01:14Z 2022-03-10T01:01:14Z 2021 Journal Article Yu, L., Ong, S. J. H., Liu, X., Mandler, D. & Xu, J. Z. (2021). The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design. Electrochimica Acta, 392, 139013-. https://dx.doi.org/10.1016/j.electacta.2021.139013 0013-4686 https://hdl.handle.net/10356/155660 10.1016/j.electacta.2021.139013 2-s2.0-85112723072 392 139013 en 2019-T1-002- 125 Electrochimica Acta © 2021 Elsevier Ltd. All rights reserved. This paper was published in Electrochimica Acta and is made available with permission of Elsevier Ltd. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Energy Storage
Lithium-Sulfur Battery
spellingShingle Engineering::Materials
Energy Storage
Lithium-Sulfur Battery
Yu, Linghui
Ong, Samuel Jun Hoong
Liu, Xianhu
Mandler, Daniel
Xu, Jason Zhichuan
The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
description The dissolution of polysulfides is widely considered to be a major obstacle for developing lithium-sulfur batteries (LSBs) because it results in a shuttle effect. A popular strategy to address this issue is preventing polysulfide dissolution, e.g., trapping/confining polysulfides in porous carbons. However, this conflicts with the advantage of commonly used ether-based electrolytes, i.e., the dissolution of polysulfides in such electrolytes is beneficial for delivering Li+ to sulfur-based species compared to sluggish solid-state transport. Thus, a question is raised on the feasibility of the strategy to prevent polysulfide dissolution. Here, it is shown that the dissolution of polysulfides in ether-based electrolytes is necessary for a high capacity, suggesting that it might not be right to prevent the dissolution of polysulfides in such electrolytes. Thus, other approaches should be developed. A perspective is hence provided for designing electrolyte/cathode for high-energy LSBs.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Yu, Linghui
Ong, Samuel Jun Hoong
Liu, Xianhu
Mandler, Daniel
Xu, Jason Zhichuan
format Article
author Yu, Linghui
Ong, Samuel Jun Hoong
Liu, Xianhu
Mandler, Daniel
Xu, Jason Zhichuan
author_sort Yu, Linghui
title The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
title_short The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
title_full The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
title_fullStr The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
title_full_unstemmed The importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
title_sort importance of the dissolution of polysulfides in lithium-sulfur batteries and a perspective on high-energy electrolyte/cathode design
publishDate 2022
url https://hdl.handle.net/10356/155660
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