Binder-free porous core-shell structured Ni/NiO configuration for application of high performance lithium ion batteries

被引：150

作者：

Li, Xifei ^{[1
]}

Dhanabalan, Abirami ^{[1
]}

Bechtold, Kevin ^{[1
]}

Wang, Chunlei ^{[1
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 09期

关键词：

Core-shell; Ni/NiO; Anode; Lithium ion batteries; Conversion reaction; ANODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; FABRICATION; REACTIVITY; FILMS;

D O I：

10.1016/j.elecom.2010.06.024

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An interwoven core-shell structured Ni/NiO anode for lithium ion batteries was created by a simple oxidation of Ni foam. As-prepared configuration has a high specific discharge capacity of 701 mAh g(-1) at the 2nd cycle. Its electrochemical performance at subsequent cycles shows good energy capacity of 646 mAh g(-1) at the 65th cycle as well as good rate capability. The porous core-shell structure not only buffers the volume change during cycling but also effectively increases the contact among anode, current collector and electrolyte. The small contact resistance between NiO and Ni facilitates enhanced intrinsic kinetics from conversion reaction. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1222 / 1225

页数：4

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