不同烧结条件下纳米球形LiFePO_4材料的性能研究

单忠强; 王国增; 田地; 田建华

doi:10.61558/2993-074X.1950

电化学 >

2009 , Vol. 15 >Issue 1: 34 - 37

DOI: https://doi.org/10.61558/2993-074X.1950

研究论文

不同烧结条件下纳米球形LiFePO_4材料的性能研究

单忠强 ,
王国增 ,
田地 ,
田建华

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天津大学化工学院应用化学系;

收稿日期: 2009-02-28

修回日期: 2009-02-28

网络出版日期: 2009-02-28

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The Effect of Sintering Time on the Performance of Spherical and Nano-sized LiFePO_4 Cathode Material

SHAN Zhong-qiang ,
WANG Guo-zeng ,
TIAN Di ,
TIAN Jian-hua

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(Department of Applied Chemistry,School of Chemical Engineering & Technology,Tianjin University,Tianjin 300072,China

Received date: 2009-02-28

Revised date: 2009-02-28

Online published: 2009-02-28

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摘要

应用液相共沉淀—碳热还原法,合成纳米尺寸球形LiFePO4材料,并研究烧结时间对该材料性能的影响.XRD、SEM、TEM及充放电循环测试表明,烧结时间为10 h,LiFePO4的球形度较好,颗粒尺寸:50~100nm.0.1C放电,初始容量为154.6 mAh/g,且具有良好的循环性能.

关键词： 磷酸铁锂; 球形; 纳米尺寸; 烧结时间

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单忠强 , 王国增 , 田地 , 田建华 . 不同烧结条件下纳米球形LiFePO_4材料的性能研究[J]. 电化学, 2009 , 15(1) : 34 -37 . DOI: 10.61558/2993-074X.1950

Abstract

The spherical LiFePO4 with nano-size is expected as an important direction for LiFePO4 cathode materia1.With the method of liquid co-deposited-carbonthermal reduction,we prepared spherical LiFePO4 cathode material with nano-size and we put our emphasis on the effect of sintering time on the material.By XRD,SEM,TEM and charge & discharge analysis,we found the sample sintered at 550 ℃ for 10 hours showed the best electrochemical properties and good degree of sphericity,with the size of 40～100 nm.

Key words： lithium iron phosphate; spherical; nano-size; sintering time

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