中文摘要：

采用恒电流法制备了具有可快速充放电性能的对甲基苯磺酸根（TOS^-）掺杂聚吡咯／功能化单壁碳纳米管（PPy-TOS／F-SWNTs）复合材料，扫描电镜（SEM）结果表明该复合材料呈纳米棒状构成的多孔结构，棒径约为70nm；比表面积（BET）测试分析表明该复合材料有着较高的比表面积（12．64m2．g^-1）和大的介孔孔隙率（20—40nm）．循环伏安（CV）、电化学阻抗谱（EIS）和恒电流充放A（GC）电化学分析表明该材料具有优异的快速充放电性能，在800mV的电位窗和2．5A·g^-1（功率密度为2kw·kg^-1）的电流密度下该材料具有211F．g^-1的比容量（能量密度为18.7wh·kg^-1），而当充放电电流高达80A·g^-1（功率密度为60kW·kg^-1）时比容量仍可达141．8F·g^-1（能量密度为12．6Wh·k^g-1），同时该材料还表现出优异的稳定性，在10A·g^-1大电流下经历10000圈循环后容量仍保持95．2％．

英文摘要：

Fast charge-discharge composite materials of conducting polypyrrole and functionalized single-walled carbon nanotubes doped with p-toluenesulfonate （PPy-TOS/F-SWNTs） were prepared by galvanostatic electrochemical polymerization. Scanning Electron Microscope （SEM） images showed that the composite had a nano-rod structure with a diameter of about 70 nm. Nitrogen adsorption-desorption experinents were used to characterize the specific surface area （BET） （up to 12.64 m2. g-1） and pore sizes of the composite. Electrochemical properties of the composites were studied by cyclic voltammetry （CV）, electrochemical impedance spectroscopy （EIS）, and galvanostatic charge-discharge （GC） measurements. The specific capacitance of this composite is about 211 F. g-1 （energy density： 18.7 Who kg-1） at a current density of 2.5 A- g-l, and 141.8 F. g-1 （energy density： 12.6 Wh- kg-1） at large current density of 80 A. g-1. The composite had excellent cyclability with a capacity retention of about 95.2% after 10000 cycles at a current density of 10 A. g-1. All these results indicate that this new composite material has a very rapidly charge-discharge ability.