A free-standing sulfur/nitrogen-doped carbon nanotube electrode for high- performance lithium/sulfur batteries
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Date
2015-12
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 a Springer Open Journal (2015)
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, Nanoscale Research Letters a Springer Open Journal (2015), DOI 10.1186/s11671-015-1152-4, http://nur.nu.edu.kz/handle/123456789/1675