Electrochemical reaction of the Si1-xZnx binary system with Li

被引：38

作者：

Hatchard, TD ^{[1
]}

Obrovac, MN

Dahn, JR

机构：

[1] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada

[2] 3M Co, St Paul, MN 55144 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2005年 / 152卷 / 12期

关键词：

D O I：

10.1149/1.2098407

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Alloys of Si with elements such as Zn may exhibit large specific and volumetric capacities when cycled electrochemically vs lithium. Combinatorial films of Si1-xZnx in the range 0 < x < 0.62 have been prepared by magnetron sputtering. These films have been analyzed for structure, composition, and electrochemical performance. The composition of the film is found to have a large impact on cycling performance and phases formed during charge/discharge cycling. Reversible capacities as high as 3000 mAh/g have been attained with good capacity retention for compositions having capacities of about 1000 mAh/g. In situ X-ray diffraction was performed for two compositions to determine which phases are formed during the insertion of Li. (c) 2005 The Electrochemical Society.

引用

页码：A2335 / A2344

页数：10

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