Housing Sulfur in Polymer Composite Frameworks for Li-S Batteries

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Hencz, Luke
Chen, Hao
Ling, Han Yeu
Wang, Yazhou
Lai, Chao
Zhao, Huijun
Zhang, Shanqing
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2019
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http://creativecommons.org/licenses/by/4.0/
Abstract

Extensive efforts have been devoted to the design of micro-, nano-, and/or molecular structures of sulfur hosts to address the challenges of lithium–sulfur (Li–S) batteries, yet comparatively little research has been carried out on the binders in Li–S batteries. Herein, we systematically review the polymer composite frame-works that confine the sulfur within the sulfur electrode, taking the roles of sulfur hosts and functions of binders into consideration. In particular, we investigate the binding mechanism between the binder and sulfur host (such as mechanical inter-locking and interfacial interactions), the chemical interactions between the polymer binder and sulfur (such as covalent bonding, electrostatic bonding, etc.), as well as the beneficial functions that polymer binders can impart on Li–S cathodes, such as conductive binders, electrolyte intake, adhesion strength etc. This work could provide a more comprehensive strategy in designing sulfur electrodes for long-life, large-capacity and high-rate Li–S battery.

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NANO-MICRO LETTERS
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This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Theory and design of materials
Macromolecular and materials chemistry
Materials engineering
Nanotechnology
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