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Type: Journal article
Title: Inhibition of polysulfide diffusion in lithium–sulfur batteries: mechanism and improvement strategies
Author: Deng, C.
Wang, Z.
Wang, S.
Yu, J.
Citation: Journal of Materials Chemistry A, 2019; 7(20):12381-12413
Publisher: Royal Society of Chemistry
Issue Date: 2019
ISSN: 2050-7488
Statement of
Chao Deng, Zhuowen Wang, Shengping Wang and Jingxian Yu
Abstract: Lithium–sulfur batteries present an attractive energy storage option because of their high energy density. However, the shuttle effect leads to a series of problems that hinder their commercialization. The shuttling effect is caused by the dissolution, diffusion, and side reactions of polysulfides, which can be suppressed by inhibiting the diffusion of polysulfides. Thus, many methods have been developed to impede the diffusion of polysulfides, thereby improving the cycle stability and capacity of lithium–sulfur batteries. Throughout the dissolution and diffusion processes of polysulfides, the sulfur electrode and the separator are two key locations to influence the diffusion of polysulfides. At each position, the methods of limiting polysulfide diffusion can be further divided into physical and chemical methods according to the mechanism of interaction between host materials and polysulfides. This review summarizes various methods of limiting the diffusion of polysulfides and discusses their mechanisms of action in depth, which can help to understand the advantages and disadvantages of each method. Finally, based on the recent development of lithium–sulfur batteries, the future prospects of methods for limiting the diffusion of polysulfides have been proposed.
Rights: This journal is © The Royal Society of Chemistry 2019
RMID: 0030117212
DOI: 10.1039/c9ta00535h
Appears in Collections:Chemical Engineering publications

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