Porous hematite (α-Fe2O3) nanorods as an anode material with enhanced rate capability in lithium-ion batteries

被引：77
|
作者：
Yao, Xiayin [1 ]
Tang, Changlin [1 ]
Yuan, Guoxia [1 ]
Cui, Ping [1 ]
Xu, Xiaoxiong [1 ]
Liu, Zhaoping [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 12期
关键词：
Hematite; Nanorod anode; Rate capability; Lithium-ion battery; ELECTROCHEMICAL PROPERTIES; OXIDE NANOWIRES; SIZE; INTERCALATION; FE2O3;
D O I：
10.1016/j.elecom.2011.09.015
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The porous hematite (alpha-Fe2O3) nanorods, having diameters of 30-60 nm, were prepared through thermal decomposition of FeC2O4 center dot 2H(2)O nanorods that were readily synthesized through poly(vinyl alcohol)-assisted precipitation process. Compared to the commercial alpha-Fe2O3 powders in submicrometer sizes, the porous alpha-Fe2O3 nanorods, as an electrode material in lithium-ion batteries, exhibited significantly enhanced rate capability due to their nanorod shape and porous structure. When discharging at 0.1C (1C = 1005 mA/g) and charging at different rates (0.1C, 0.5C, and 1C), the porous alpha-Fe2O3 nanorods could deliver a capacity of over than 1130 mAh/g: while cycling at 1C rate, the nanorods could maintain a discharge capacity as high as 916 mAh/g after 100 cycles. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1439 / 1442
页数：4
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