Preparation and characterization of nano-sized LiFePO4 by low heating solid-state coordination method and microwave heating

被引：128

作者：

Wang, Lei ^{[1
]}

Huang, Yudai ^{[1
]}

Jiang, Rongrong ^{[1
]}

Jia, Dianzeng ^{[1
]}

机构：

[1] Xinjiang Univ, Inst Appl Chem, Urumqi 830046, Xinjiang, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 24期

基金：

中国国家自然科学基金;

关键词：

LiFePO4; low heating solid-state coordination method; microwave heating; lithium-ion battery;

D O I：

10.1016/j.electacta.2007.04.104

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The precursors of LiFePO4 were prepared by low heating solid-state coordination method using lithium acetate, ammonium dihydric phosphate, ferrous oxalate and citric acid as raw materials. Olivine phase LiFePO4 as a cathode material for lithium-ion batteries was successfully synthesized by microwave heating in a few minutes. X-ray diffraction (XRD) and transmission electron microscope (TEM) were used to characterize its structure and morphology. Cyclic voltammetry (CV) and charge-discharge cycling performance were used to characterize its electrochemical properties. The results showed that the grain size of the optimal sample was about 40-50 nm, and the as-prepared particles were homogeneous. The nano-sized LiFePO4 obtained has a high electrochemical capacity (125 mAhg(-1)) and stable cycle ability. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：6778 / 6783

页数：6

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