Issue 20, 2019

Inhibition of polysulfide diffusion in lithium–sulfur batteries: mechanism and improvement strategies

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.

Graphical abstract: Inhibition of polysulfide diffusion in lithium–sulfur batteries: mechanism and improvement strategies

Article information

Article type
Review Article
Submitted
15 जनवरी 2019
Accepted
11 अप्रैल 2019
First published
13 अप्रैल 2019

J. Mater. Chem. A, 2019,7, 12381-12413

Inhibition of polysulfide diffusion in lithium–sulfur batteries: mechanism and improvement strategies

C. Deng, Z. Wang, S. Wang and J. Yu, J. Mater. Chem. A, 2019, 7, 12381 DOI: 10.1039/C9TA00535H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements