LiFePO4/C composite with a three-dimensional foam structure constructed via evaporative self-assembly assisted by polyethylene glycol and its improved electrochemical performance

被引：3

作者：

Bai, Ningbo ^{[1
]}

Li, Chunlong ^{[1
]}

Lu, Huayu ^{[1
]}

Xiang, Kaixiong ^{[1
]}

Chen, Han ^{[1
]}

机构：

[1] Hunan Univ Technol, Sch Met Engn, Zhuzhou 412007, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 137卷

基金：

中国国家自然科学基金;

关键词：

Composite materials; Crystal structure; LiFePO4; Cathode materials; Evaporative self-assembly; LITHIUM; ELECTRODE;

D O I：

10.1016/j.matlet.2014.09.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional foam structure LiFePO4/C composite has been successfully synthesized via evaporative self-assembly assisted by polyethylene glycol. The morphologies, structures and properties of bare LiFePO4 and LiFePO4/C are investigated by X-ray diffractometer, scanning electron microscope, and transmission electron microscope. LiFePO4/C composite exhibits high capacity of 150 mA h g(-1) at the 1 C rate, and excellent rate performance (120 mA h g(-1) at the 20 C rate). The improved properties can be attributed to a unique three-dimensional foam structure constructed by facile evaporative self-assembly. Furthermore, the unique structure can increase the electrochemical reaction surface, enhance the electrochemical conductivity and promote lithium ion diffusion. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：237 / 240

页数：4

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