Three-dimensional porous nano-Ni supported silicon composite film for high-performance lithium-ion batteries

被引：84

作者：

Zhang, Y. Q. ^{[1
]}

Xia, X. H. ^{[1
]}

Wang, X. L. ^{[1
]}

Mai, Y. J. ^{[1
]}

Shi, S. J. ^{[1
]}

Tang, Y. Y. ^{[1
]}

Cu, C. G. ^{[1
]}

Tu, J. P. ^{[1
]}

机构：

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

来源：

JOURNAL OF POWER SOURCES | 2012年 / 213卷

基金：

中国博士后科学基金;

关键词：

Amorphous silicon; Magnetron sputtering; Hydrogen bubble template; Porous film; Lithium-ion battery; CORE-SHELL NANOWIRES; ANODE MATERIALS; HIGH-CAPACITY; ELECTROCHEMICAL PERFORMANCES; NANOSTRUCTURED MATERIALS; SECONDARY BATTERIES; ENERGY-CONVERSION; STORAGE DEVICES; THIN-FILMS; NANOCOMPOSITE;

D O I：

10.1016/j.jpowsour.2012.03.052

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：

A three-dimensional (3D) porous nano-Ni supported Si composite film is successfully fabricated by the combination of hydrogen bubble template electrodeposition of porous nano-Ni film and radiofrequency magnetron sputtering amorphous silicon. As anode for lithium-ion batteries, the 3D porous Ni/Si composite film shows noticeable electrochemical performance with high capacity of 2444 mAh g(-1), at a current density of 0.84 A g(-1), superior capacity retention of 83% after 100 cycles, as well as excellent rate capability with 1420 and 1273 mAh g(-1) at charge-discharge current densities of 4.2 A g(-1) and 8.4 A g(-1) after 100 cycles, respectively. The enhanced electrochemical performance is mainly attributed to the highly porous conductive architecture, which provides good mechanical support and electron conducting pathway for active silicon and alleviates the structure degradation caused by volume expansion during the cycling process. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：106 / 111

页数：6

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