Improved capacity and rate capability of Fe2O3 modified Li4Ti5O12 anode material

被引：26
|
作者：
Wang, Baofeng [1 ]
Cao, Jie [1 ]
Liu, Yu [1 ]
Zeng, Tao [1 ]
Li, Lei [2 ]
机构：
[1] Shanghai Univ Elect Power, Shanghai 200090, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 587卷
关键词：
Lithium ion batteries; Anode material; Li4Ti5O12; Fe2O3; LITHIUM-ION BATTERIES; ELECTROCHEMICAL PERFORMANCE; NANOCRYSTALLINE LI4TI5O12; HYDROTHERMAL SYNTHESIS; FACILE SYNTHESIS; FLOWER-LIKE; ELECTRODES; COMPOSITE; INSERTION; STORAGE;
D O I：
10.1016/j.jallcom.2013.10.167
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Spinel Li4Ti5O12/Fe2O3 composites were prepared by a facile hydrolysis method combined with further heat-treatment. The structure and electrochemical performance of the Li4Ti5O12/Fe2O3 material were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and charge-discharge tests. Electrochemical measurements demonstrated that the Fe2O3 modified Li4Ti5O12 anode material showed obviously improved high rate performance with discharge capacity of 109.4 mA h/g at 10 C. The Li4Ti5O12/Fe2O3 anode also showed superior cycling stability with an initial discharge capacity of 145.3 mA h/g at 2 C rate and maintained 93% of its initial capacity after 300 cycles. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：21 / 25
页数：5
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