期刊
ELECTROCHIMICA ACTA
卷 166, 期 -, 页码 93-99出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.03.070
关键词
Multi-walled carbon nanotubes; Polyaniline; Sulfur composite cathode; Lithium-sulfur battery
资金
- National Natural Science Foundation of China [U1401248]
- Natural Science Foundation of Guangdong Province [U1401248, S2013040016471]
- China Postdoctoral Science Foundation funded project [2013M530369, 2014T70819]
- key project of Science and Technology in Guangdong Province [2013B090800013]
- scientific research project of Department of Education of Guangdong Province [2013CXZDA013]
We report a novel composite, sulfur supported by multi-walled carbon nanotubes and coated with polyaniline (denoted as MWCNTs-S@PANI), as cathode of lithium-sulfur battery. MWCNTs-S is prepared by loading sulfur on MWCNTs via chemical deposition and coated with polyaniline via in situ polymerization under the control of ascorbic acid. The physical and electrochemical performances of the resulting MWCNTs-S@PANI are investigated by nitrogen adsorption-desorption isotherms, X-ray powder diffraction, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, electrochemical impedance spectroscopy, and charge/discharge test. It is found that MWCNTs-S@PANI exhibits good cyclic stability and rate capability compared to MWCNTs-S as cathode of lithiumsulfur battery. (C) 2015 Elsevier Ltd. All rights reserved.
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