Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 39, Issue 28, Pages 16073-16080Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.04.047
Keywords
Nitrogen doped; Carbon nanotubes; Lithium-sulfur batteries; Sulfur distribution
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The performance of lithium sulfur (Li/S) battery was greatly improved by the employment of nitrogen doped carbon nanotubes (N-CNTs) based cathode. By manipulating its structure thereby creating more defects, N-CNTs presents better dispersion of sulfur particles on N-CNTs and higher electrical conductivity compared with their non-doped counterpart, which explain the reason why N-CNTs/S composite shows improved performance. The specific discharge capacity was maintained at 625 mAh g(-1) and 513 mAh g(-1) after 100 cycles at 0.2 C and 0.5 C, respectively, which was about 2 times as that of CNTs. This method is proved to be a promising way to develop cathode materials for lithium sulfur batteries. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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