高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (12): 2767.doi: 10.7503/cjcu20180250

• 物理化学 • 上一篇    下一篇

高性能钛酸锂/还原氧化石墨烯复合负极材料的合成与应用

孙兵1, 蒋尚2, 王润伟1, 倪玲1, 裘式纶1, 张宗弢1()   

  1. 1. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
    2. 大同大学碳材料研究所, 大同 037009
  • 收稿日期:2018-04-02 出版日期:2018-12-03 发布日期:2018-09-29
  • 作者简介:

    联系人简介: 张宗弢, 男, 博士, 教授, 博士生导师, 主要从事无机纳米材料合成及性质研究. E-mail: zzhang@jlu.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 20841003, 21261130584, 20741001)资助.

Preparation and Application of High Performance Lithium Titanate/reduced Graphene Oxide Nanocomposites for Lithium Batteries

SUN Bing1, JIANG Shang2, WANG Runwei1, NI Ling, QIU Shilun1, ZHANG Zongtao1,*()   

  1. 1. College of Chemsitry, State Key Laboratory of Inorganic Synthesis & Preparative Chemistry,Jilin University, Changchu
    2.Institute of Carbon Materials Science, Datong University, Datong 037009, China
  • Received:2018-04-02 Online:2018-12-03 Published:2018-09-29
  • Contact: ZHANG Zongtao E-mail:zzhang@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.20841003, 21261130584, 20741001).

摘要:

通过简单的水热法制备了具有介孔结构的钛酸锂/还原氧化石墨烯(LTO/RGO)负极材料, 并对该材料的结构及形貌进行了表征. 结果表明, 该方法获得的LTO/RGO负极材料具有高的比表面积且钛酸锂纳米片不易团聚. 电化学性能测试结果表明, 该材料在0.1C倍率下的初始放电比容量达到182.2 mA·h/g; 在5C倍率下经过500周循环后容量仍保持在160. 6 mA·h/g, 表现出较好的循环性能.

关键词: 锂离子电池, 介孔材料, 钛酸锂, 还原氧化石墨烯

Abstract:

Mesoporous lithium titanate/reduced graphene oxide anode material was synthesized by a simple hydrothermal method. The morphology and structure of the obtained materials were characterized. The electrochemical properties of the obtained materials were tested. The results show that the lithium titanate/reduced graphene oxide anode material posseses high specific surface area and the lithium titanate nanosheets are not easy to agglomerate; the initial discharge specific capacity is increased to 182.2 mA·h/g at 0.1C rate; and the cycling performance is greatly improved, with a cupacity of 160.6 mA·h/g after 500 cycles at 5C rate.

Key words: Lithium ion battery, Mesoporous material, Li4Ti5O12, Reduced graphene oxide

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