微孔炭/聚苯胺纳米线复合材料的制备及其电化学电容性能

纳米线型导电聚合物是一种具有良好应用前景的超级电容器电极材料,该文用简易的原位化学氧化法制备了微孔炭/聚苯胺纳米线(MC/PANI)复合材料,并以此复合材料为活性物质制备工作电极,在1 mol/L H2SO4中,通过循环伏安、交流阻抗和恒流充放电技术考察了其电化学电容性能,结果表明,在0.2 A/g的电流密度下,MC/PANI电极首次充放电比电容可达到329 F/g,高于PANI电极的259 F/g,且MC/PANI电极电荷传递电阻(Rct)小于MC和PANI,可见纳米线型PANI可加强电极材料的电化学性能。

Synthesis of Microporous Carbon-Polyaniline Nanowire Composites and Their Electrochemical Capacitive Performance

Conductive polymer nanowires arrays have promising applications in supercapacitor electrode materials.This paper reports a facile approach to synthesizing microporous carbon-polyaniline nanowire(MC/PANI) composites.Then,the working electrode was prepared with MC/PANI composites as the active substance,and its electrochemical capacitance was characterized by means of cyclic voltammetry,A.C.impedance and galvanostatic charge-discharge in 1 mol/L H2SO4 solution.The results indicate that the specific capacitance of the MC/PANI electrode can be as high as 329 F/g at a current density of 0.2 A/g,which is higher than 259 F/g of PANI electrode under the same conditions,and that the charge transfer resistance(Rct) of MC/PANI is smaller than that of MC or PANI.Therefore,it is demonstrated that the PANI nanowires could enhance the electrochemical performance of electrode materials.