期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 13, 期 12, 页码 1431-1434出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2011.09.014
关键词
Tin oxide; Nanocables; Conducting polymer; Multi-walled carbon nanotube; Li-ion batteries
资金
- Natural Science Foundation of China [50825203, 20803042, 21175050]
- Fundamental Research Funds for the Central Universities (HUST) [2010QN048, 09110911]
SnO2-based composite coaxial nanocables with multi-walled carbon nanotube (MWCNT) and polypyrrole (PPy), SnO2@MWCNT@SnO2@PPy have been successfully synthesized via a simple one-pot chemical route. Such a novel nanostructure can not only provide a high conductivity, but also effectively suppress mechanical stress and prevent aggregation of SnO2 nanoparticles, leading to the improvement in the electrochemical utilization and cycling stability of SnO2 during Li-storage reaction. As anode materials, the as-obtained coaxial nanocables show a reversible capacity as high as 600 mAh g(-1) and a coulombic efficiency close to 100%, which is potential for practical application in lithium-ion batteries. (C) 2011 Elsevier B.V. All rights reserved.
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