Electrochemical Performance of LiFePO4 Cathode Material Coated with PbTe

被引：5
|
作者：
Xu, Jing [1 ]
Chen, Gang [1 ]
机构：
[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 11期
基金：
美国国家科学基金会;
关键词：
crystal growth from solution; crystal structure; electrochemical electrodes; electrochemical impedance spectroscopy; lead compounds; lithium compounds; secondary cells; transmission electron microscopy; voltammetry (chemical analysis); X-ray diffraction;
D O I：
10.1149/1.3202443
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
LiFePO4 was surface modified with PbTe via a hydrothermal process followed by heat-treating. The LiFePO4-PbTe materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry, and electrochemical impedance spectroscopy. The XRD results indicate that the crystal structure of LiFePO4 does not change after surface coating. The TEM image shows a coating layer on the surface of the LiFePO4 core. Electrochemical analysis demonstrates that the discharge capacity and capacity retention behavior of LiFePO4 are remarkably improved after surface modification.
引用
收藏
页码：H399 / H401
页数：3
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