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2007 , Vol. 22 >Issue 3: 447 - 450

DOI: https://doi.org/10.3724/SP.J.1077.2007.00447

研究论文

一种锂离子电池正极纳米材料LiV3O8 的制备和性能

  • 杨辉 ,
  • 李娟 ,
  • 张校刚 ,
  • 贾殿赠
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  • 1. 新疆大学应用化学研究所, 乌鲁木齐 830046; 2. 西安交通大学理学院, 西安 710049; 3. 南京航天航空大学材料科学与技术学院, 南京 210016

收稿日期: 2006-06-12

  修回日期: 2006-10-25

  网络出版日期: 2007-05-20

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Synthesis and Properties of LiV3O8 Nanomaterials as the Cathode Material for Li-ion Battery

  • YANG Hui ,
  • LI Juan ,
  • ZHANG Jiao-Gang ,
  • JIA Dian-Zeng
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  • 1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China; 2. School of Science, Xi’an Jiaotong University, Xi’an 710049, China; 3.College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received date: 2006-06-12

  Revised date: 2006-10-25

  Online published: 2007-05-20

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摘要

采用一种简单的低热固相合成方法, 在不同烧结温度下制备了具有纳米结构的LiV3O8. 并利用X射线衍射、热重/差热、透射电镜、充放电以及循环伏安等测试手段对其结构、形貌和性能做了研究. 结果表明, 不同的烧结温度影响到产物的结构、形貌和性能. 300℃烧结6h的样品, 在1.8～3.8V范围内, 首次放电比容量达到342mAh/g. 随着烧结温度的升高, 样品在(100)方向的衍射峰明显增强, 充放电容量也有所下降.

关键词： 锂离子电池; 纳米材料; LiV3O8; 电化学性能

本文引用格式

杨辉 , 李娟 , 张校刚 , 贾殿赠 . 一种锂离子电池正极纳米材料LiV3O8 的制备和性能[J]. 无机材料学报, 2007 , 22(3) : 447 -450 . DOI: 10.3724/SP.J.1077.2007.00447

Abstract

A novel technique was employed to preparing LiV3O8 in which LiOH·H2O and NH4VO3 were used as the raw materials. The structure, morphology and properties of the sample were investigated by XRD, TGA/DTA, TEM, charge-discharge and CV. The results of XRD and TEM show that different calcining temperatures result in different structure and morphology, which lead to different discharge capacities. The specific discharge capacity of the sample calcined at 300℃ for 6h, in the range of 1.8--3.8V, is up to 342mAh/g in the first cycle. The capacity of the sampl is decreased with the increase of calcining temperatures.

Key words： lithium ion battery; nanomaterial; LiV3O8; electrochemical properties

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