物理化学学报 >> 2016, Vol. 32 >> Issue (11): 2737-2744.doi: 10.3866/PKU.WHXB201609072

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水热法制备Fe3O4/rGO纳米复合物作为锂离子电池阳极材料

朱守圃1,2,吴甜1,2,苏海明1,2,瞿姗姗1,2,解永娟1,2,陈铭1,2,*(),刁国旺1,2,*()   

  1. 1 扬州大学化学化工学院,江苏扬州225002
    2 江苏省环境材料与环境工程重点实验室,江苏扬州225002
  • 收稿日期:2016-06-27 发布日期:2016-11-08
  • 通讯作者: 陈铭,刁国旺 E-mail:chenming@yzu.edu.cn;gwdiao@yzu.edu.cn

Hydrothermal Synthesis of Fe3O4/rGO Nanocomposites as Anode Materials for Lithium Ion Batteries

Shou-Pu ZHU1,2,Tian WU1,2,Hai-Ming SU1,2,Shan-Shan QU1,2,Yong-Juan XIE1,2,Ming CHEN1,2,*(),Guo-Wang DIAO1,2,*()   

  1. 1 College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu Province, P. R. China
    2 Key Laboratory of Environmental Materials & Environmental Engineering of Jiangsu Province, Yangzhou 225002, Jiangsu Province, P. R. China
  • Received:2016-06-27 Published:2016-11-08
  • Contact: Ming CHEN,Guo-Wang DIAO E-mail:chenming@yzu.edu.cn;gwdiao@yzu.edu.cn

摘要:

以氢氧化铁为四氧化三铁的前驱体,氧化石墨烯(GO)为还原石墨烯(rGO)的前驱体,以水合肼和二水合柠檬酸三钠为混合还原剂,采用水热法制备了还原石墨烯负载四氧化三铁纳米颗粒(Fe3O4/rGO)的复合材料。通过透射电子显微镜(TEM)、X-射线衍射(XRD)和热重分析(TGA)对产物的形貌、结构和组成进行了表征。以锂片为对电极进行了扣式电池的组装,通过恒电流充放电和循环伏安法对其电化学性能进行了测试。材料具有均一的形貌,rGO具有较高的还原程度且可以在充放电过程中缓冲Fe3O4纳米颗粒的体积变化,使得Fe3O4/rGO纳米复合物具有较好的电化学性能。

关键词: 锂离子电池, 纳米复合物, 四氧化三铁, 石墨烯, 阳极材料

Abstract:

Fe3O4/rGO nanocomposites were prepared by hydrothermal method using Fe(OH)3 as precursor of magnetite nanoparticles, graphene oxide (GO) as precursor of reduced graphene oxide (rGO), hydrazine and trisodium citrate as mixed reducing agent. The morphologies, structures and compositions of the products were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The electrochemical characteristics of assembled coin-type cells versus metallic lithium were evaluated by cyclic voltammetry and galvanostatic charge-discharge. The uniform morphology, high reductive level of rGO and the role of rGO buffering the volume changes of Fe3O4 nanoparticles in the charging-discharging process can be responsible for the good electrochemical performance of Fe3O4/rGO nanocomposites.

Key words: Lithium ion battery, Nanocomposite, Magnetite, Graphene, Anode material

MSC2000: 

  • O646