期刊
JOURNAL OF POWER SOURCES
卷 240, 期 -, 页码 659-666出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.05.017
关键词
SiO2/Cu/PAN-C; Composite; Anode; Lithium ion battery; Electrochemical performance
资金
- Positec
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canadian Foundation for Innovation (CFI)
- Canada Research Chairs (CRC) program
A new SiO2/Cu/polyacrylonitrile-C composite (donated as SiO2/Cu/PAN-C) is prepared by mechanical ball milling and heat treatment of CuO-coated SiO2 and polyacrylonitrile. During heat treatment, Cu is produced by reduction of CuO and SiO2 is embedded in the matrix of Cu and PAN-C. SiO2 in the composite presents a specific capacity of 1230 mAh g(-1), and exhibits excellent cyclic stability and rate capability when cycling in the voltage range of 0.0-3.0 V. Electrochemical impedance spectra (EIS) indicate that the addition of Cu effectively improves the conductivity of electrode and diminishes interfacial impedance. (C) 2013 Elsevier B.V. All rights reserved.
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