物理化学学报 >> 2013, Vol. 29 >> Issue (01): 117-122.doi: 10.3866/PKU.WHXB201210234

电化学和新能源 上一篇    下一篇

石墨烯/聚苯胺复合材料的制备及其电化学性能

王宏智, 高翠侠, 张鹏, 姚素薇, 张卫国   

  1. 天津大学化工学院杉山表面技术研究室, 天津 300072
  • 收稿日期:2012-08-24 修回日期:2012-10-22 发布日期:2012-12-14
  • 通讯作者: 张卫国 E-mail:zwg@tju.edu.cn
  • 基金资助:

    天津市自然科学基金(11JCYBJC01900)资助项目

Synthesis and Electrochemical Performance of Graphene/Polyaniline

WANG Hong-Zhi, GAO Cui-Xia, ZHANG Peng, YAO Su-Wei, ZHANG Wei-Guo   

  1. Shan Shan Research Office of Surface Technology, College of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
  • Received:2012-08-24 Revised:2012-10-22 Published:2012-12-14
  • Supported by:

    The project was supported by the Natural Science Foundation of Tianjin, China (11JCYBJC01900).

摘要:

以苯胺和氧化石墨烯(GO)为原料, 采用电化学方法制备了石墨烯/聚苯胺(GP)复合材料. 利用X射线衍射(XRD)、扫描电镜(SEM)、拉曼(Raman)光谱、X射线光电子能谱分析(XPS)对其结构、微观形貌进行了表征,并对复合材料电化学性能进行了测试. 结果表明, 复合材料保持了石墨烯的基本形貌, 聚苯胺颗粒均匀地分散在石墨烯表面, 复合材料在500 mA·g-1的电流密度下比电容达到352 F·g-1, 1000 mA·g-1下比电容为315 F·g-1, 经过1000 次的充放电循环后容量保持率达到90%, 远大于石墨烯和聚苯胺单体的比电容. 复合材料放电效率高, 电解质离子易于在电极中扩散和迁移.

关键词: 石墨烯, 聚苯胺, 复合, 电化学制备, 性能

Abstract:

Graphene/polyaniline composites (GP) were prepared from aniline and graphite oxide using an electrochemical method. The structure characterization and surface morphology were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS), and its electrochemical properties were measured. The results show that the composite keeps the basic morphology of graphene and that the polyaniline particles are uniformly dispersed. The specific capacitances of the composite materials reach 352 and 315 F·g-1 at 500 and 1000 mA·g-1, respectively, higher than those of graphene and polyaniline. The majority (90%) of the capacitance remains after 1000 cycles of charge and recharge at 1000 mA·g-1. The composite shows potential for use in supercapacitors.

Key words: Graphene, Polyaniline, Composite, Electrochemical preparation, Property

MSC2000: 

  • O646