Cu-Sn-Core Shell Nanowire Arrays as Three-Dimensional Electrodes for Lithium-Ion Batteries

被引：55

作者：

Wang, Jiazheng

Du, Ning

Zhang, Hui

Yu, Jingxue

Yang, Deren ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 47期

关键词：

HIGH-CAPACITY ANODE; ONE-POT SYNTHESIS; ELECTROCHEMICAL PROPERTIES; NEGATIVE ELECTRODE; THIN-FILM; NANOSTRUCTURES; NANOTUBES; COMPOSITE; BEHAVIOR; ALLOYS;

D O I：

10.1021/jp206277a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cu-Sn core-shell three-dimensional electrodes have been successfully synthesized by directly depositing metallic Sn on the surface of presynthesized Cu nanowire arrays. When used as an anode for lithium-ion batteries, the Cu-Sn three-dimensional electrode exhibits a high reversible capacity, a high initial Coulombic efficiency, a good rate capability, and an improved capacity retention. The effect of the thickness of the Sn layer on the Li-ion battery performance has also been investigated. The efficient buffering of the volume change, fast transport of electrons, and good contact to the current collector of the array structure may be responsible for the good cycling performance.

引用

收藏

页码：23620 / 23624

页数：5

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