石墨烯_聚苯胺复合材料的制备及其电化学性能_王宏智.pdf

物理化学学报(Wuli Huaxue Xuebao) January Acta Phys. -Chim. Sin. 2013, 29 (1), 117-122 117 [Article] doi: 10.3866/PKU.WHXB201210234 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* (天津大学化工学院杉山表面技术研究室, 天津 300072) 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 中图分类号: O646 Synthesis and Electrochemical Performance of Graphene/Polyaniline WANG Hong-Zhi GAO Cui-Xia ZHANG Peng YAO Su-Wei ZHANG Wei-Guo* (Shan Shan Research Office of Surface Technology, College of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China) 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 basi