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

页码：1439 / 1442

页数：4

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