Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/44011
Title: Fabrication of a novel TiO<inf>2</inf>/S composite cathode for high performance lithium-sulfur batteries
Authors: Xie, K
Han, Y
Wei, W
Yu, H
Zhang, C
Wang, JG
Lu, W
Wei, B
Issue Date: 2015
Publisher: Royal Society of Chemistry
Source: RSC advances, 2015, v. 5, no. 94, p. 77348-77353 How to cite?
Journal: RSC advances 
Abstract: Sulfur is an attractive cathode material with a high specific capacity of 1675 mA h g-1, but its rapid capacity decay due to polysulfide dissociation presents a significant technical challenge. Here, we present the fabrication of a TiO<inf>2</inf>/S composite cathode by encapsulating elemental sulfur into TiO<inf>2</inf> nanotube hosts for high performance lithium-sulfur batteries. A high capacity of 913 mA h g-1 has been achieved at a rate of 0.2C in the initial cycle for the TiO<inf>2</inf>/S composite cathode with a sulfur content of 65 wt% and the reversible capacity remains as high as 851 mA h g-1 after 100 cycles. The improvements of electrochemical performances were attributed to the good dispersion of sulfur in the TiO<inf>2</inf> nanotubes and the excellent adsorbing effect on polysulfides of TiO<inf>2</inf>.
URI: http://hdl.handle.net/10397/44011
EISSN: 2046-2069
DOI: 10.1039/c5ra13823j
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