Fabrication of three-dimensional porous structured Co3O4 and its application in lithium-ion batteries

被引：55
作者：
Wang, Chong [1 ]
Wang, Dianlong [1 ]
Wang, Qiuming [1 ]
Wang, Lin [1 ]
机构：
[1] Harbin Inst Technol, Sch Chem Engn &Technol, Harbin 150001, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2010年 / 55卷 / 22期
基金：
中国国家自然科学基金;
关键词：
Cobalt oxides; Three-dimensional structure; Electrodeposition; Anode; Lithium-ion batteries; THIN-FILM; ANODE; TRANSITION; COO;
D O I：
10.1016/j.electacta.2010.06.044
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel three-dimensional (3D) porous structured Co3O4 was prepared by electrodeposition combined with thermal-treatment method. The electrochemical properties of as-prepared 3D porous Co3O4 were closely related to its morphology and structure which can be modified by various thermal-treatment temperatures. The 3D porous Co3O4 prepared at 300 degrees C exhibited smaller crystallite size and higher capacity compared to 400 degrees C as well as 500 degrees C. As used in lithium-ion batteries, the porous Co3O4 anodes delivered a high reversible capacity of about 1100 mAh g(-1) with no obvious capacity fading up to 50 cycles and exhibited higher rate capability compared with Co3O4 foil anodes. The enhanced electrochemical performances of 3D porous Co3O4 anodes are attributed to its unique 3D porous structure which can offer a large materials/electrolyte contact area and accommodate the strain induced by the volume change during cycling. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6420 / 6425
页数：6
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