Preparation of LiFePO4 with inverse opal structure and its satisfactory electrochemical properties

被引：45

作者：

Lu, JB ^{[1
]}

Tang, ZL ^{[1
]}

Zhang, ZT ^{[1
]}

Shen, W ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2005年 / 40卷 / 12期

关键词：

electrochemical properties; energy storage; ionic conductivity;

D O I：

10.1016/j.materresbull.2005.07.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Phase pure, well-crystallized and homogeneous LiFePO4 powder with inverse opal structure was obtained by calcining the precursors of Li+. Fe2+ and PO43- in the presence of organic template of poly (styrene-methyl methacrylate-acrylic acid) latex micro-spheres under nitrogen atmosphere. The resultant products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS). chemical titration, Fourier transform infrared (FTIR) and Land 2001A electrochemical measurement system. Results indicated that after the decomposition of organic template, inverse opal structure and conductive carbon were left in the resultant products. With the large specific surface area resulting from inverse opal structure and with the conductive carbon, the products delivered satisfactory capacity and superior rate capability at room temperature, i.e., over 100 mAh/g at the high current density of 5.9C. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2039 / 2046

页数：8

共 15 条

[1] Versatile synthesis of carbon-rich LiFePO4 enhancing its electrochemical properties [J].