Sn/C composite anodes for Li-ion batteries

被引：87
作者：
Kim, IS [1 ]
Blomgren, GE
Kumta, PN
机构：
[1] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA
[2] Blomgren Consulting Serv Ltd, Lakewood, OH 44107 USA
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 03期
关键词：
D O I：
10.1149/1.1643792
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Composites of Sn/C were synthesized by infiltrating tetraethyltin into mechanically milled polystyrene resin powder. Heat-treatment of the precursor in Ar atmosphere at 600 degreesC results in crystalline tin and amorphous carbon. The resultant composite exhibits a capacity of 480 mAh/g with good capacity retention (0.15% loss/cycle). Transmission electron microscopy analysis indicates nanocrystalline (similar to 200 nm) spherical tin particles embedded in large carbon particles (congruent to2 to 10 mum). The embedment of nanocrystalline tin within carbon appears to be the main reason for the good cyclability suggesting the excellent potential of these Sn/C based composites for use as alternative anodes for lithium-ion batteries. (C) 2004 The Electrochemical Society.
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收藏
页码：A44 / A48
页数：5
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