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Sulfur-Impregnated Disordered Carbon Nanotubes Cathode for Lithium–Sulfur Batteries
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Department of Chemical and Biomolecular Engineering University of Maryland, College Park, Maryland 20742, United States
Nano Lett., 2011, 11 (10), pp 4288–4294
DOI: 10.1021/nl202297p
Publication Date (Web): September 19, 2011
Copyright © 2011 American Chemical Society
E-mail: cswang@umd.edu.
Abstract
The commercialization of lithium–sulfur batteries is hindered by low cycle stability and low efficiency, which are induced by sulfur active material loss and polysulfide shuttle reaction through dissolution into electrolyte. In this study, sulfur-impregnated disordered carbon nanotubes are synthesized as cathode material for the lithium–sulfur battery. The obtained sulfur–carbon tube cathodes demonstrate superior cyclability and Coulombic efficiency. More importantly, the electrochemical characterization indicates a new stabilization mechanism of sulfur in carbon induced by heat treatment.
Keywords:
Disordered carbon nanotubes; lithium−sulfur batteries; sulfur impregnation; sulfur−carbon bondsTools
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History
- Published In Issue October 12, 2011
- Article ASAPSeptember 22, 2011
- Just Accepted ManuscriptSeptember 19, 2011
- Received: July 06, 2011
Revised: August 23, 2011
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