A facile and low-cost industrial method to optimize LiFePO4

被引：0
作者：
He W.-D. [1 ]
Liang Y.-C. [1 ]
Liu J.-N. [1 ]
Tan C. [1 ]
Rao G.-F. [1 ]
机构：
[1] School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu
来源：
Dianzi Keji Diaxue Xuebao | / 4卷 / 659-663期
关键词：
Carbothermal reduction method; Citric acid; FePO[!sub]4[!/sub; LiFePO[!sub]4[!/sub;
D O I：
10.3969/j.issn.1001-0548.2016.04.018
中图分类号：
学科分类号：
摘要：
In this paper, nano-FePO4 was synthesized using industrial iron waste water, (NH4)2HPO4, and citric acid as chelating agent. The size and morphology of FePO4 were characterized by scanning electron microscopy (SEM), indicating that the FePO4 nanoparticles were well dispersed. LiFePO4 was prepared by a carbothermal reduction method utilizing the FePO4 nanoparticles and the structure was analyzed by X-ray diffraction (XRD), demonstrating the LiFePO4 was of high purity and owns an olivine structure. The electrochemical performance of LiFePO4 was investigated by galvanostatic charge/discjharge. The LiFePO4 synthesized by FePO4 modified by citric acid showed a high discharge capacity of 141 mAh·g-1 at the 0.1 C rate. The cycle performance of LiFePO4 was good at different rate test of 0.1 C, 0.2 C, 0.5 C and 1 C. This favored electrochemical performance was attributed to the size-reduced LiFePO4 particles and uniform carbon coating layer. The low-cost starting material and facile synthetic method are promising for practical applications. © 2016, Editorial Board of Journal of the University of Electronic Science and Technology of China. All right reserved.
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页码：659 / 663
页数：4
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