期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 175, 期 2, 页码 164-171出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2010.07.023
关键词
V3O7 center dot H2O nanobelts; Vanadium oxides; Hydrothermal approach; Crystal growth mechanism; Electrical property
资金
- National Science Fund [J0730426]
- Natural Science Foundation of Hubei Province [2005ABA034]
- Wuhan University [2007138]
- Key Laboratory of Catalysis and Materials Science of Hubei Province [CHCL06003]
Single-crystal V3O7 center dot H2O nanobelts have been successfully synthesized in a large-scale by ethanol reducing of the commercial V2O5 powder via a facile hydrothermal approach, without any templates and surfactants. The as-prepared V3O7 center dot H2O nanobelts are up to several tens of micrometers in length, about 100 nm in width and about 20 nm in thickness in average, respectively. The Hydrating-Reducing-Exfoliating-Splitting (HRES) mechanism was proposed to describe the formation of the V3O7 center dot H2O nanobelts. In our research progress, it was found that the ratio of EtOH/H2O, the reaction time and categories of the reducing agents had significant effects on the morphology and composition of as-obtained products. Furthermore, the electrochemical properties of V3O7 center dot H2O nanobelts were preformed and the results revealed that a lithium battery using those nanobelts as the positive electrode exhibited a high initial discharge capacity of 373 mAh/g. (C) 2010 Elsevier B.V. All rights reserved.
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