Facile synthesis of MoS2/graphene composites: effects of different cationic surfactants on microstructures and electrochemical properties of reversible lithium storage
- 10 September 2013
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 3 (44), 21675-21684
- https://doi.org/10.1039/c3ra43699c
Abstract
MoS2/graphene composites were synthesized through the concurrent reducing of (NH4)2MoS4 and graphene oxide sheets with assistance of different cationic surfactants (DTAB, OTAB and TBAB) followed by heat treatment in a nitrogen atmosphere. The effects of the three cationic surfactants on the microstructures and electrochemical performances of the composites for reversible lithium storage were investigated. The MoS2 in the composites prepared with assistance of DTAB or OTAB displays single-/few-layer structure, while the layered MoS2 sheets with about 6–7 layers are observed in the composite prepared with assistance of TBAB. The former two composites exhibit greatly enhanced electrochemical performance for reversible Li+ storage. In particular, MoS2/graphene composite prepared with assistance of OTAB delivered a high reversible capacity of 1056 mA h g−1 with excellent cycle stability and good rate capability. The significant improvement in the electrochemical performances is attributed to the roubest composite structure and the synergistic interactions between graphene and single-/few-layer MoS2. This work also presented a facile process to prepare MoS2/graphene composites, in which the layer number of MoS2 sheets could be adjusted to a certain extent by using different cationic surfactants.This publication has 58 references indexed in Scilit:
- Graphene: A Two‐Dimensional Platform for Lithium StorageSmall, 2013
- Fabrication of Single‐ and Multilayer MoS2 Film‐Based Field‐Effect Transistors for Sensing NO at Room TemperatureSmall, 2011
- Single-layer MoS2/graphene dispersed in amorphous carbon: towards high electrochemical performances in rechargeable lithium ion batteriesJournal of Materials Chemistry, 2011
- An overview of graphene in energy production and storage applicationsJournal of Power Sources, 2011
- l-Cysteine-Assisted Synthesis of Layered MoS2/Graphene Composites with Excellent Electrochemical Performances for Lithium Ion BatteriesACS Nano, 2011
- Graphene-like MoS2/amorphous carbon composites with high capacity and excellent stability as anode materials for lithium ion batteriesJournal of Materials Chemistry, 2011
- Graphene based new energy materialsEnergy & Environmental Science, 2011
- Single-layer MoS2 transistorsNature Nanotechnology, 2011
- Graphene-Based Nanoassemblies for Energy ConversionThe Journal of Physical Chemistry Letters, 2011
- The rise of grapheneNature Materials, 2007