Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jpowsour.2014.04.084
Title: Cationic surfactant-assisted hydrothermal synthesis of few-layer molybdenum disulfide/graphene composites: Microstructure and electrochemical lithium storage
Authors: Ma, L.
Huang, G.
Chen, W.
Wang, Z.
Ye, J.
Li, H.
Chen, D.
Lee, J.Y. 
Keywords: Cationic surfactants
Composites
Electrochemical lithium storage
Few-layer molybdenum disulfide
Graphene
Issue Date: 15-Oct-2014
Citation: Ma, L., Huang, G., Chen, W., Wang, Z., Ye, J., Li, H., Chen, D., Lee, J.Y. (2014-10-15). Cationic surfactant-assisted hydrothermal synthesis of few-layer molybdenum disulfide/graphene composites: Microstructure and electrochemical lithium storage. Journal of Power Sources 264 : 262-271. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jpowsour.2014.04.084
Abstract: Few-layer molybdenum disulfide/graphene (FL-MoS2/GNS) composites are fabricated by a facile hydrothermal route and a post-annealing with the assistance of various cationic surfactants (dodecyltrimethylammonium bromide, DTAB; octyltrimethylammonium bromide, OTAB; and tetrabutylammonium bromide, TBAB), which have different alkyl-chain lengths and stereo configurations. The effects of these cationic surfactants on the microstructures and electrochemical performances of the FL-MoS2/GNS for lithium storage are investigated. It is demonstrated the cationic surfactants show some ability to control the microstructure (layer number) of FL-MoS2 in composites. The electrochemical performances of FL-MoS2/GNS composites for lithium storage are greatly improved compared to the bare MoS2. Especially, FL-MoS2/GNS with ∼6 MoS2 layers prepared with the assistance of OTAB exhibits very high reversible capacity of ∼1200 mAh g-1 with excellent cycle stability and enhanced rate capability. Electrochemical impedance spectrum also confirms that the FL-MoS2/GNS composite electrodes exhibit much lower electron-transfer resistance than the MoS2. The remarkable electrochemical performances of FL-MoS 2/GNS composites can be attributed to the synergistic interaction between FL-MoS2 and graphene and their quasi-3D architectures, which promote lithium diffusion, electron transfer and electrolyte access. © 2014 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
URI: http://scholarbank.nus.edu.sg/handle/10635/88627
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2014.04.084
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