期刊
JOURNAL OF POWER SOURCES
卷 262, 期 -, 页码 15-22出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.03.085
关键词
Tin oxide; Reduced graphene oxides; Lithium-ion batteries; Anode; Composites
资金
- National Natural Science Foundation of China [21003079]
- Natural Science Foundation [ZR2011BM018]
- Research Award Fund for Outstanding Middle-Aged and Young Scientist of Shandong Province [BS2011CL020]
- Qingdao Project of Science and Technology [12-1-4-3-(20)-jch]
In this manuscript, we present a facile and friendly wet chemical method to prepare monodisperse SnO2 nanocrystals assembled on reduced graphene oxide (RGO). Aided with sodium dodecyl sulfonate, small SnO2 nanoparticles (similar to 5 nm) are deposited onto the flexible support evenly and tightly. A cheap compound, urea, is used for the controlled precipitation of SnO2 and the reduction of graphene oxide. When tested as the anode material, the hybrid composite electrode delivers excellent cyclability at high current density, such as high reversible capacity over 1000 mAh g(-1) after 400 cycles at 0.5 A g(-1) and similar to 560 mAh g(-1) after 400 cycles at 1 A g(-1). The composites also exhibit superior rate capability varying from 0.1 to 4 A g(-1), and possess capacity of 423 mAh g(-1) at 4 A g(-1). This synthesis strategy seems to be suitable for industrial production and can also be extended to produce a variety of metal oxide/RGO composites. (C) 2014 Elsevier B.V. All rights reserved.
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