期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 471, 期 1-2, 页码 442-447出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.03.133
关键词
Energy storage materials; Inorganic materials; Chemical synthesis; Sintering; Electrochemical reactions
资金
- Zhejiang Provincial Natural Science Foundation of China [Y407030]
- Research Fund for the Doctoral Program of Higher Education of China [20050335086]
3D (three-dimensional) flowerlike MoS2 was fabricated by hydrothermal synthesis assisted with an ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]), and characterized by XRD (X-ray diffractometer) and FESEM( field-emission scanning electron microscopy). It was found that the ionic liquid played a crucial role on MoS2 morphology. The MoS2 prepared with IL-assisted hydrothermal route was 3D flowerlike architecture, which was built from MoS2 nanoflakes. The MoS2 prepared without IL was nanosheets overlaped each other. Both of the as-prepared MoS2 samples were mainly amorphous. The 3D. owerlike MoS2 prepared with IL-assisted hydrothermal route exhibited significantly enhanced the electrochemical lithiation/delithiation performances. Its reversible capacity and cycling durability were better than those of the MoS2 nanosheets prepared without IL. Although, the MoS2 samples with high crystallinity could be gained by their annealing at 800 degrees C in the atmosphere of N-2/H-2, the annealing lead to great decrease in their electrochemical lithiation/delithiation capacity and cycling durability. (c) 2008 Published by Elsevier B. V.
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