Composite anode material of silicon/graphite/carbon nanotubes for Li-ion batteries

被引：229

作者：

Zhang, Y. ^{[1
]}

Zhang, X. G. ^{[1
]}

Zhang, H. L. ^{[1
]}

Zhao, Z. G. ^{[1
]}

Li, F. ^{[1
]}

Liu, C. ^{[1
]}

Cheng, H. M. ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2006年 / 51卷 / 23期

基金：

中国国家自然科学基金;

关键词：

silicon; multi-walled carbon nanotubes (MWNTs); natural graphite; anode material; Li-ion battery;

D O I：

10.1016/j.electacta.2006.01.043

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A composite anode material of silicon/graphite/multi-walled carbon nanotubes (MWNTs) for Li-ion batteries was prepared by ball milling. This composite anode material showed a discharge capacity of 2274 mAh/g in the first cycle, and after 20 charge-discharge cycles, a reversible capacity of 584 mAh/g was retained, much higher than 218 mAh/g for silicon/graphite composite. It was observed that silicon particles were homogeneously embedded into the "lamellar structures" of flaked graphite particles, and the silicon/graphite composite particles were further wrapped by a MWNTs network. The improvement in the electrochemical properties of the composite anode material was mainly attributed to the excellent resiliency and good electric conductivity of the MWNTs network. (c) 2006 Published by Elsevier Ltd.

引用

页码：4994 / 5000

页数：7

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