A free-standing sulfur/nitrogen-doped carbon nanotube electrode for high- performance lithium/sulfur batteries
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Date
2015-11-19
Authors
Zhao, Yan
Yin, Fuxing
Zhang, Yongguang
Zhang, Chengwei
Mentbayeva, Almagul
Umirov, Nurzhan
Xie, Hongxian
Bakenov, Zhumabay
Journal Title
Journal ISSN
Volume Title
Publisher
Nanoscale Research Letters., http://www.nanoscalereslett.com/content/10/1/450
Abstract
A free-standing sulfur/nitrogen-doped carbon nanotube (S/N-CNT) composite prepared via a simple solution
method was first studied as a cathode material for lithium/sulfur batteries. By taking advantage of the self-weaving
behavior of N-CNT, binders and current collectors are rendered unnecessary in the cathode, thereby simplifying its
manufacturing and increasing the sulfur weight ratio in the electrode. Transmission electronic microscopy showed
the formation of a highly developed core-shell tubular structure consisting of S/N-CNT composite with uniform
sulfur coating on the surface of N-CNT. As a core in the composite, the N-CNT with N functionalization provides a
highly conductive and mechanically flexible framework, enhancing the electronic conductivity and consequently
the rate capability of the material.
Description
Keywords
lithium/sulfur battery, sulfur/nitrogen-doped carbon nanotube composite cathode, free-standing electrode
Citation
Zhao Yan., Yin Fuxing., Zhang Yongguang., Zhang Chengwei., Mentbayeva Almagul., Umirov Nurzhan., Xie Hongxian., Bakenov Zhumabay., A free-standing sulfur/Nitrogen-doped carbon nanotube electrode for high- performance lithium/sulfur batteries, 2015 November 19, Nanoscale Research Letters, DOI 10.1186/s11671-015-1152-4