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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 23/2017

14.08.2017

Carbon nanotube doped active carbon coated separator for enhanced electrochemical performance of lithium–sulfur batteries

verfasst von: Yafang Guo, Jianrong Xiao, Yongxuan Hou, Zhiyong Wang, Aihua Jiang

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 23/2017

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Abstract

A thin coating layer composed of carbon nanotubes (CNTs) and active carbon (AC) was introduced on one side of a pristine Celgard separator toward the cathode. Possessing superior physical adsorption capacity and electrical conductivity, this functional carbon coating can act as a barrier to effectively intercept polysulfides and further improve the utilization of sulfur. This functionality greatly improves rate capability and cycle life. The initial discharge specific capacity of a lithium-sulfur battery with CNT/AC-coated separator could reach 1495.6 mAh g−1 at 0.2 C. After 200 discharge/charge cycles, it can still deliver a reversible capacity of as high as 742 mAh g−1 with a low fading rate of 0.25% per cycle. When the rate is increased to 1 C, the S cathode can still deliver a discharge capacity of 988.4 mAh g−1 and retain the remaining capacity of 718 mAh g−1 over 50 cycles.
Vorheriger Artikel Magnetic properties and high frequency characteristics of isotropic FeCoZr thin films with stripe domains
Nächster Artikel Evolution of the hardness and Young’s moduli of interlayers in Sn99Cu1/Cu solder joints subjected to isothermal ageing

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Metadaten
Titel
Carbon nanotube doped active carbon coated separator for enhanced electrochemical performance of lithium–sulfur batteries
verfasst von
Yafang Guo
Jianrong Xiao
Yongxuan Hou
Zhiyong Wang
Aihua Jiang
Publikationsdatum
14.08.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 23/2017
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-017-7679-7

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