| 自支撑石墨烯/聚苯胺纳米纤维薄膜的制备及其电化学电容行为 |
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| 引用本文： | 卢向军,窦辉,杨苏东,郝亮,张方,张校刚.自支撑石墨烯/聚苯胺纳米纤维薄膜的制备及其电化学电容行为[J].物理化学学报,2011,27(10):2333-2339. |
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| 作者姓名： | 卢向军 窦辉 杨苏东 郝亮 张方 张校刚 |
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| 作者单位： | College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China |
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| 基金项目： | 国家重点基础研究发展计划(973)项目，国家自然科学基金 |
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| 摘 要： | 用真空抽滤氧化石墨（GO）与聚苯胺（PANI）纳米纤维的混合分散溶液,流动组装得到自支撑GO/PANI复合薄膜,再利用气态水合肼还原其中的GO,最后重新氧化和掺杂还原态PANI,制备了自支撑石墨烯（GN）/PANI薄膜.扫描电子显微镜（SEM）结果显示,GN/PANI薄膜为层状结构,且PANI纳米纤维均匀插层于GN片间.PANI纳米纤维在复合薄膜中的存在有效增大了GN之间的层间距,有利于电解液离也GN充分接触.GN的高电导性则有利于PANI氧化还原过程中的电荷传输.电化学测试表明,GN/PANI薄膜在1 mol·L-1HCl电解液中具有良好的电化学电容性能,在0.1 A·g-1的电流密度下的比容量为495 F·g-1,在3A·g-1时为313 F·g-1.经过2000次连续充放电,其具有90%的电容保持率,表明该复合材料具有良好的电化学稳定性.
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| 关 键 词： | 石墨烯 聚苯胺 超级电容器 自支撑电极 |
| 收稿时间： | 2011-06-03 |
| 修稿时间： | 2011-08-23 |
Fabrication and Electrochemical Capacitive Behavior of Freestanding Graphene/Polyaniline Nanofibre Film |
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| LU Xiang-Jun,DOU Hui,YANG Su-Dong,HAO Liang,ZHANG Fang,ZHANG Xiao-Gang.Fabrication and Electrochemical Capacitive Behavior of Freestanding Graphene/Polyaniline Nanofibre Film[J].Acta Physico-Chimica Sinica,2011,27(10):2333-2339. |
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| Authors: | LU Xiang-Jun DOU Hui YANG Su-Dong HAO Liang ZHANG Fang ZHANG Xiao-Gang |
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| Institution: | College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China |
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| Abstract: | A freestanding film composed of graphene(GN) sheets and polyaniline(PANI) nanofibres was fabricated by reducing a graphite oxide(GO)/PANI precursor that was prepared by flow-directed assembly from a complex dispersion of GO and PANI.This was followed by reoxidation and redoping of the reduced PANI in the composite to restore the conducting PANI structure.A scanning electron microscope(SEM) image indicates that the GN/PANI film is a layered structure with PANI nanofibres uniformly sandwiched between the GN s... |
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| Keywords: | Graphene Polyaniline Supercapacitor Freestanding electrode |
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