SiO2/Cu/polyacrylonitrile-C composite as anode material in lithium ion batteries

被引：63
作者：
Li, Mingqi [1 ]
Li, Jing [1 ]
Li, Kai [1 ]
Zhao, Yan [1 ]
Zhang, Yongguang [1 ]
Gosselink, Denise [1 ]
Chen, P. [1 ]
机构：
[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
来源：
JOURNAL OF POWER SOURCES | 2013年 / 240卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
SiO2/Cu/PAN-C; Composite; Anode; Lithium ion battery; Electrochemical performance; SILICON NANOWIRES; ENERGY-STORAGE; PERFORMANCE; CARBON; GROWTH; ALLOY; SIO2;
D O I：
10.1016/j.jpowsour.2013.05.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：659 / 666
页数：8
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