Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7804
Title: Sulfur encapsulated in porous hollow CNTs@CNFs for high-performance lithium-sulfur batteries
Authors: Chen, Y
Li, X
Park, KS
Hong, J
Song, J
Zhou, L 
Mai, YW
Huang, H 
Goodenough, JB
Issue Date: 2014
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry A, 2014, v. 2, no. 26, p. 10126-10130 How to cite?
Journal: Journal of materials chemistry A 
Abstract: Significant challenges for the commercialization of a lithium-sulfur battery include its rapid capacity fading and low power capability. Encapsulating the sulfur in pores of small volume of a porous carbon material alleviates this problem. We report a carbon-sulfur nanoarchitecture that encapsulates sulfur in porous hollow carbon-nanotubes@carbon-nanofibers (CNTs@CNFs) with a high Brunauer-Emmett-Teller (BET) specific surface area of 1400 m2 g-1 and a total pore volume of 1.12 cm3 g-1. As a cathode, this material with 55 wt.% sulfur shows a high capacity of ∼1313 mA h g-1 at 0.2 C, 1078 mA h g-1 at 0.5 C, 878 mA h g-1 at 1 C, 803 mA h g-1 at 1.5 C, 739 mA h g-1 at 2 C, and 572 mA h g-1 at 5 C, and maintains ∼700 mA h g-1 at 1 C after 100 cycles and 430 mA h g-1 at 5 C after 200 cycles, which makes it a superior cathode material for a rechargeable Li-S battery.
URI: http://hdl.handle.net/10397/7804
ISSN: 2050-7488
EISSN: 2050-7496
DOI: 10.1039/c4ta01823k
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