Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 600, Issue -, Pages 84-90Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.02.127
Keywords
Molybdenum disulfide; Nanospheres; Nanoribbons; Nanoparticles; Lithium-ion batteries
Categories
Funding
- Central South University [2013JSJJ027]
- Fundamental Research Funds for the Central Universities of Central South University [2013zzts026]
- Hunan Provincial Natural Science Foundation of China [13JJ1003]
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A one-step hydrothermal process was employed to prepare a series of MoS2 nanostructures via simply altering the surfactant as soft template and hydrothermal reaction temperature. Three kinds of MoS2 nanostructures (three-dimensional (3D) hierarchical nanospheres, one-dimensional (1D) nanoribbons, and large aggregated nanoparticles) were successfully achieved and investigated well by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), and Brunauer-Emmett-Teller analysis (BET). Electrochemical tests reveal that these MoS2 samples could deliver high initial discharge capacities (higher than 1050.0 mA h g(-1)), but various cycling performances. The hierarchical MoS2 nanospheres assembled by sheet-like subunits show the highest specific capacity of 1355.1 mA h g(-1), and 66.8% of which can be retained after 50 cycles. The good lithium storage property of hierarchical MoS2 nanospheres can be attributed to the higher electrolyte/MoS2 contact area and stable 3D layered structure. (C) 2014 Elsevier B. V. All rights reserved.
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