Electrospinning Preparation of Nanosilicon/Disordered Carbon Composite as Anode Materials in Li-Ion Battery

被引:35
作者
Fan, Xing [1 ]
Zou, Lin [1 ]
Zheng, Yong-Ping [1 ]
Kang, Fei-Yu [1 ]
Shen, Wan-Ci [1 ]
机构
[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
SECONDARY BATTERIES; NEGATIVE ELECTRODE; SILICON ANODES; LITHIUM; SI; NANOCOMPOSITES; NANOFIBER; GRAPHITE;
D O I
10.1149/1.3186642
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrospinning is employed to prepare Si/C composite anode materials. By electrospinning of Si-poly(vinyl alcohol) and by subsequent pyrolysis under argon flow, the nanosilicon particles coated by disordered carbon are uniformly and tightly embedded in the irregular porous network of a disordered carbon matrix, which leads to the gradual release of large capacity from the pure Si component in the composite anode. After 50 cycles, the reversible discharge capacity of the Si/C composite can reach as high as 892.5 mAh/g. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3186642] All rights reserved.
引用
收藏
页码:A199 / A201
页数:3
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