Mesoporous Silicon Anodes Prepared by Magnesiothermic Reduction for Lithium Ion Batteries

被引：103

作者：

Chen, Wei ^{[1
]}

Fan, Zhongli ^{[1
]}

Dhanabalan, Abirami ^{[1
]}

Chen, Chunhui ^{[1
]}

Wang, Chunlei ^{[1
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 09期

关键词：

HIGH-CAPACITY; THIN-FILMS; RAMAN-SPECTROSCOPY; NANO-SILICON; PERFORMANCE; STORAGE; PARTICLES;

D O I：

10.1149/1.3611433

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Porous Si prepared by the magnesiothermic reaction was used as anode material for lithium ion batteries. The synthesis conditions were investigated to obtain high purity of silicon phase. The structures of porous Si were characterized by TEM, Raman and N-2 adsorption-desorption. The electrochemical performance was tested by cyclic voltammetry (CV) and discharge-charge measurement. The porous Si exhibits larger storage capacity and improved cyclability compared to commercial Si powders. The enhanced capacity and cyclability are attributed to the loose mesoporous structure of porous Si, which can accommodate large volume change in the lithiation/delithiation process. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3611433] All rights reserved.

引用

页码：A1055 / A1059

页数：5

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