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研究论文

Li_4Ti_5O_(12)纳米片的合成及储锂性能研究

  • 王怡菲 ,
  • 唐宇峰 ,
  • 仇征 ,
  • 杨立
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  • 上海交通大学化学化工学院;

收稿日期: 2010-02-28

  修回日期: 2010-02-28

  网络出版日期: 2010-02-28

Preparation and Electrochemical Behavior of Li_4Ti_5O_(12) Nanosheets as Anode Material for Lithium Ion Battery

  • WANG Yi-fei ,
  • TANG Yu-feng ,
  • QIU Zheng ,
  • YANG Li
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  • (School of Chemistry and Chemical Technology,Shanghai Jiao Tong University,Shanghai 200240,China

Received date: 2010-02-28

  Revised date: 2010-02-28

  Online published: 2010-02-28

摘要

以无定形的水合二氧化钛为前驱物,水热法合成了200~400nm大小的Li4Ti5O12纳米片作为锂离子电池负极材料.XRD(X射线衍射)、SEM(扫描电子显微镜)和TEM(透射电镜)分析表征样品的物相结构、表观形貌;循环伏安、充放电循环和电化学交流阻抗技术分别测定该纳米Li4Ti5O12在有机电解液和室温离子液体S114TFSI电解液中的电化学性能.结果表明,该材料具有较高的放电容量和良好的循环性能,有望成为锂二次电池新型负极材料.

本文引用格式

王怡菲 , 唐宇峰 , 仇征 , 杨立 . Li_4Ti_5O_(12)纳米片的合成及储锂性能研究[J]. 电化学, 2010 , 16(1) : 46 -50 . DOI: 10.61558/2993-074X.2036

Abstract

Spinel lithium titanate(Li4Ti5O12) nanosheets with a size range of 200 ~400 nm were synthesized by hydrothermal process from the amorphous hydrous titanium oxide precursors.The as-prepared products were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The electrochemical behaviors of Li4Ti5O12 electrode in conventional organic electrolyte and ionic liquid electrolyte were investigated by using cyclic voltammetry,galvanostatic charge-discharge and AC impedance techniques.The experimental results indicate that the as-prepared nanostructured Li4Ti5O12,evaluated as anode material,exhibited good reversibility and cycle performance.It is expected to be a potential anode material for commerical battery applications.

参考文献

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