Journal
NANO LETTERS
Volume 11, Issue 10, Pages 4288-4294Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202297p
Keywords
Disordered carbon nanotubes; lithium-sulfur batteries; sulfur impregnation; sulfur-carbon bonds
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Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DESC0001160]
- DoE through National Energy Technology Laboratory [RES1100534]
- National Science Foundation
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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.
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