Advanced Lithium–Sulfur Batteries Enabled by a Bio-Inspired Polysulfide Adsorptive Brush

Teng Zhao, Yusheng Ye, Xiaoyu Peng, Giorgio Divitini, Hyun Kyung Kim, Cheng Yen Lao, Paul R. Coxon, Kai Xi, Yingjun Liu, Caterina Ducati, Renjie Chen*, R. Vasant Kumar

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

132 引用 (Scopus)

摘要

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.

源语言英语
页(从-至)8418-8426
页数9
期刊Advanced Functional Materials
26
46
DOI
出版状态已出版 - 13 12月 2016

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Zhao, T., Ye, Y., Peng, X., Divitini, G., Kim, H. K., Lao, C. Y., Coxon, P. R., Xi, K., Liu, Y., Ducati, C., Chen, R., & Kumar, R. V. (2016). Advanced Lithium–Sulfur Batteries Enabled by a Bio-Inspired Polysulfide Adsorptive Brush. Advanced Functional Materials, 26(46), 8418-8426. https://doi.org/10.1002/adfm.201604069