期刊
ELECTROCHIMICA ACTA
卷 211, 期 -, 页码 972-981出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.06.139
关键词
surfactant-free; self-assembly; rGO-MoO2 composite; anode; lithium battery
资金
- Key Projects in Nature Science Foundation of Jiangsu Province [BK2011030]
- Major Project of Educational Commission of Jiangsu Province of China [13KJA430004]
- Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Changjiang Scholars Program [T2011170]
Graphene/metal oxide nanocomposites are promising electrode materials for lithium-ion batteries (LIBs), in which synergistic effects between the two components may benefit the overall capacity, rate capability and cycling stability. Here, we report a simple and easy scale-up method for the preparation of high-quality reduced graphite oxide-MoO2 (rGO-MoO2) nanobelt composites, which demonstrate attractive electrochemical performance as LIB anodes. MoO3 nanobelts are first prepared by a simple hydrothermal route and distributed homogeneously in water, and then graphite oxide (GO) is prepared by a modified Hummers method and introduced into the solution. Both materials slowly self-assemble to form GO-MoO3 nanocomposite in a surfactant-free manner. After thermal reduction, rGO-MoO2 nanobelt composites are obtained, as confirmed by FE-SEM and TEM. Using such composite as LIB electrodes, a reversible capacity of 754 mAh g(-1) is obtained after 80 cycles at 0.2 A g(-1), and the electrode also demonstrates superior rate capabilities. These results are comparable to or even higher than those of other reported graphene-MoO2 composites, which are fabricated in more complicated fashions, thus rendering the current product as highly promising electrode materials for practical use. (C) 2016 Elsevier Ltd. All rights reserved.
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