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Advanced Lithium–Sulfur Batteries Enabled by a Bio-Inspired Polysulfide Adsorptive Brush
Authors
Balach
Barchasz
+45 more
Cao
Chen
Chen
Chen
Cheon
Choi
Chung
Diao
Elazari
Evers
Greene
Hwang
Ji
Ji
Ji
Kim
Kim
Kozen
Liang
Liang
Liang
Lin
Liu
Liu
Manthiram
Mikhaylik
Nelson
Peng
Song
Su
Tang
Wang
Wu
Wu
Wu
Wu
Xiao
Xu
Xu
Yamin
Yang
Yuan
Zhang
Zhao
Zhou
Publication date
26 October 2016
Publisher
Advanced Functional Materials
Doi
Cite
Abstract
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Issues with the dissolution and diffusion of polysulfides in liquid organic electrolytes hinder the advance of lithium–sulfur batteries for next-generation energy storage. To trap and re-utilize the polysulfides without hampering lithium ion conductivity, a bio-inspired, brush-like interlayer consisting of zinc oxide (ZnO) nanowires and interconnected conductive frameworks is proposed. The chemical effect of ZnO on capturing polysulfides has been conceptually confirmed, initially by using a commercially available macroporous nickel foam as a conductive backbone, which is then replaced by a free-standing, ultra-light micro/mesoporous carbon (C) nanofiber mat for practical application. Having a high sulfur loading of 3 mg cm −2 , the sulfur/multi-walled carbon nanotube composite cathode with a ZnO/C interlayer exhibits a reversible capacity of 776 mA h g −1 after 200 cycles at 1C with only 0.05% average capacity loss per cycle. A good cycle performance at a high rate can be mainly attributed to the strong chemical bonding between ZnO and polysulfides, fast electron transfer, and an optimized ion diffusion path arising from a well-organized nanoarchitecture. These results herald a new approach to advanced lithium–sulfur batteries using brush-like chemi-functional interlayers.T.Z. acknowledges the support of a Krishnan-Ang studentship from Trinity College, Cambridge. X.P., G.D., and C.D. acknowledge funding from ERC under Grant No. 259619 PHOTO EM. C.D. acknowledges financial support from the EU under Grant No. 312483 ESTEEM2. This work was also supported by the National Science Foundation of China (Grant No. 21373028), Major achievements Transformation Project for Central University in Beijing, and Beijing Science and Technology Project (Grant No. D151100003015001)
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info:doi/10.1002%2Fadfm.201604...
Last time updated on 02/01/2020
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