Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies

Lithium–sulfur batteries (LSBs) represent a promising next-generation energy storage system, with advantages such as high specific capacity (1675 mAh g<sup>−1</sup>), abundant resources, low price, and ecological friendliness. During the application of liquid electrolytes, the flammabili...

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Main Authors: Qiancheng Zhu, Chun Ye, Deyu Mao
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Nanomaterials
Subjects:
Online Access:https://www.mdpi.com/2079-4991/12/20/3612
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author Qiancheng Zhu
Chun Ye
Deyu Mao
author_facet Qiancheng Zhu
Chun Ye
Deyu Mao
author_sort Qiancheng Zhu
collection DOAJ
description Lithium–sulfur batteries (LSBs) represent a promising next-generation energy storage system, with advantages such as high specific capacity (1675 mAh g<sup>−1</sup>), abundant resources, low price, and ecological friendliness. During the application of liquid electrolytes, the flammability of organic electrolytes, and the dissolution/shuttle of polysulfide seriously damage the safety and the cycle life of lithium–sulfur batteries. Replacing a liquid electrolyte with a solid one is a good solution, while the higher mechanical strength of solid-state electrolytes (SSEs) has an inhibitory effect on the growth of lithium dendrites. However, the lower ionic conductivity, poor interfacial contact, and relatively narrow electrochemical window of solid-state electrolytes limit the commercialization of solid-state lithium–sulfur batteries (SSLSBs). This review describes the research progress in LSBs and the challenges faced by SSEs, which are classified as polymer electrolytes, inorganic solid electrolytes, and composite electrolytes. The advantages, as well as the disadvantages of various types of electrolytes, the common coping strategies to improve performance, and future development trends, are systematically described.
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spelling doaj.art-66d644a487fd47ab948cb14ca6ef8bfe2023-11-24T01:40:15ZengMDPI AGNanomaterials2079-49912022-10-011220361210.3390/nano12203612Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and StrategiesQiancheng Zhu0Chun Ye1Deyu Mao2School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, ChinaSchool of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, ChinaSchool of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, ChinaLithium–sulfur batteries (LSBs) represent a promising next-generation energy storage system, with advantages such as high specific capacity (1675 mAh g<sup>−1</sup>), abundant resources, low price, and ecological friendliness. During the application of liquid electrolytes, the flammability of organic electrolytes, and the dissolution/shuttle of polysulfide seriously damage the safety and the cycle life of lithium–sulfur batteries. Replacing a liquid electrolyte with a solid one is a good solution, while the higher mechanical strength of solid-state electrolytes (SSEs) has an inhibitory effect on the growth of lithium dendrites. However, the lower ionic conductivity, poor interfacial contact, and relatively narrow electrochemical window of solid-state electrolytes limit the commercialization of solid-state lithium–sulfur batteries (SSLSBs). This review describes the research progress in LSBs and the challenges faced by SSEs, which are classified as polymer electrolytes, inorganic solid electrolytes, and composite electrolytes. The advantages, as well as the disadvantages of various types of electrolytes, the common coping strategies to improve performance, and future development trends, are systematically described.https://www.mdpi.com/2079-4991/12/20/3612lithium–sulfur batterysolid electrolytepolymer electrolyteinorganic solid electrolytecomposite electrolyte
spellingShingle Qiancheng Zhu
Chun Ye
Deyu Mao
Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
Nanomaterials
lithium–sulfur battery
solid electrolyte
polymer electrolyte
inorganic solid electrolyte
composite electrolyte
title Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
title_full Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
title_fullStr Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
title_full_unstemmed Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
title_short Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies
title_sort solid state electrolytes for lithium sulfur batteries challenges progress and strategies
topic lithium–sulfur battery
solid electrolyte
polymer electrolyte
inorganic solid electrolyte
composite electrolyte
url https://www.mdpi.com/2079-4991/12/20/3612
work_keys_str_mv AT qianchengzhu solidstateelectrolytesforlithiumsulfurbatterieschallengesprogressandstrategies
AT chunye solidstateelectrolytesforlithiumsulfurbatterieschallengesprogressandstrategies
AT deyumao solidstateelectrolytesforlithiumsulfurbatterieschallengesprogressandstrategies