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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

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

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.

本文引用格式

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.
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