Enhancement of F-doping on the electrochemical behavior of carbon-coated LiFePO4 nanoparticles prepared by hydrothermal route

被引：105

作者：

Lu, Fei ^{[1
,2
]}

Zhou, Yichun ^{[1
,2
]}

Liu, Jun ^{[1
,2
]}

Pan, Yong ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Hunan, Peoples R China

[2] Xiangtan Univ, Fac Mat Optoelect & Phys, Xiangtan 411105, Hunan, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 24期

关键词：

Lithium ion batteries; Cathode materials; LiFePO4; Hydrothermal method; F-doping; LI-ION BATTERIES; CATHODE MATERIALS; FLUORINE-SUBSTITUTION; POSITIVE-ELECTRODE; LITHIUM BATTERIES; IMPROVEMENT; NANOMATERIALS; TEMPERATURE; PERFORMANCE; CAPACITY;

D O I：

10.1016/j.electacta.2011.07.079

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

F-doped LiFePO4/C nanoparticles were synthesized via a low-temperature hydrothermal reaction followed by high-temperature treatment. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FIR) spectrometer, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and transmission electron microscope (TEM). To investigate their electrochemical properties, the cyclic voltammetry, electrochemical impedance spectroscopy curves, charge-discharge curves and cycle life test were carried out. The results show that F-doping can modify the microstructure and further improve the electrochemical performance of these cathode materials. These F-doped LiFePO4/C nanoparticles show obviously better high rate performance and stable cycle ability. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：8833 / 8838

页数：6

共 34 条

[11] Approaching theoretical capacity of LiFePO4 at room temperature at high rates [J].