Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78607
Title: Multifunctional separator with porous carbon/Multi-walled carbon nanotube coating for advanced lithium-sulfur batteries
Authors: Tan, L
Li, XH
Wang, ZX
Guo, HJ
Wang, JX
An, L 
Keywords: Lithium-sulfur batteries
Polysulfides
Porous carbon
Multifunctional separators
Issue Date: 2018
Publisher: Wiley-VCH
Source: ChemElectroChem, Jan. 2018, v. 5, no. 1, p. 71-77 How to cite?
Journal: ChemElectroChem 
Abstract: An issue associated with lithium-sulfur (Li-S) batteries is polysulfide dissolution, leading to the serious crossover of polysulfide to the Li anode. To address this issue, we report on a multifunctional separator prepared by introducing a porous carbon/multi-walled carbon nanotube (PC/MWCNT) composite into a commercial separator. It shows that the PC/MWCNT composite is able to enhance the interfacial interaction between the coating and the polysulfide and provides a large surface area for absorbing the polysulfide, thus improving the electrical conductivity. It has been demonstrated that the Li-S cell constructed with the PC/MWCNT composite separator results in a reversible capacity as high as 659 mAhg(-1) after 200 cycles at 0.5 C, and the average capacity fading rate of the cell is about 0.138% per cycle. The performance improvement is attributed to a reduction in the crossover rate of polysulfide through the composite separator as a result of the polysulfide absorption by PC/MWCNT layer.
URI: http://hdl.handle.net/10397/78607
ISSN: 2196-0216
DOI: 10.1002/celc.201700986
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