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CNT-intercalated rGO/sulfur laminated structure for high-rate and long-life lithium-sulfur batteries.
- Source :
-
Materials Letters . May2018, Vol. 219, p68-71. 4p. - Publication Year :
- 2018
-
Abstract
- Lithium-sulfur (Li-S) batteries represent one of the next-generation Li-ion batteries. However, the poor conductivity and large volumetric expansion of sulfur result in low rate performance and unfavorable cycle stability. Herein, a laminated structure of sulfur/reduced graphene oxide intercalated by carbon nanotube (CNT-rGO/S) composites was designed and fabricated for the first time to address the issue. The composites prepared via hydrothermal coprecipitation was endowed a perfect crystal and highly integrated structure, which retained a good electrical conductivity and accommodated the sulfur volume expansion due to the sufficient free space between the CNT-intercalated graphene layers. The CNT-rGO/S cathode exhibits a good capacity of 783.3 mAh g −1 at 0.5 C and a desirable cycling stability with 77.2% of the capacity remaining after 1000 cycles even at a rate as high as 5 C, which offers great potential for practical applications in Li-S batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 219
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 128391291
- Full Text :
- https://doi.org/10.1016/j.matlet.2018.02.054