Improved performance for lithium-ion batteries with nickel nanocone-arrays supported germanium anode

被引：11
|
作者：
Wang, Desheng [1 ]
Yang, Zhibo [1 ]
Li, Fei [1 ]
Liu, Dequan [1 ]
Wang, Xinghui [1 ]
Yan, Hengqing [1 ]
He, Deyan [1 ]
机构：
[1] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 11期
关键词：
Germanium coating; Nickel nanocone-array; Lithium-ion battery anode; HIGH-CAPACITY; NANOWIRES;
D O I：
10.1016/j.matlet.2011.02.082
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Germanium coatings as an anode material of lithium-ion batteries have been deposited on electrodeposited nickel nanocone-arrays by very high frequency plasma enhanced chemical vapor deposition. The morphologies of the obtained nanostructures were characterized by field emission scanning electron microscopy in detail. The electrochemical performance was evaluated by a galvanostatic battery testing. It was shown that the anode exhibits a stable capacity of 590 mAh/g at a rate of C/10. A reversible specific capacity is retained to be 468 mAh/g at a rate of C/2 after 50 cycles, which is close to the value of the second cycle. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1542 / 1544
页数：3
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