【摘要】 为了提高碳纳米管的比容,采用化学原位聚合的方法在碳纳米管的表面包覆聚苯胺,制备碳纳米管-聚苯胺纳米复合物.运用TEM和IR对样品进行了表征.通过循环伏安研究样品的电化学特性.利用恒流充放电考察基于碳纳米管-聚苯胺复合物超级电容器的性能.在相同实验条件下,对碳纳米管进行了比较分析.实验结果表明,在电流密度为10mA/cm2时,碳纳米管和碳纳米管-聚苯胺复合物的比容分别为52和201F/g.基于碳纳米管-聚苯胺纳米复合物的超级电容器的能量密度达到6.97Wh/kg,并且具有良好的功率特性.更多还原

【Abstract】 In order to increase the specific capacitance of carbon nanotubes (CNT), chemical polymeriza- tion method was used to prepare carbon nanotube-polyaniline (CNT-PANI) nanocomposite by coating polyaniline on the surface of the CNT. The product was characterized by transmission electron microscopy and infrared spectra. Cyclic voltammetry was also used to investigate its electrochemical properties. The performance of supercapacitors equipped with the CNT-PANI nanocomposite electrodes in 1 mol/L H2SO4 was evaluated by galvanostatic charge/discharge. A comparative analysis of the CNT was also conducted under similar conditions. At a current density of 10 mA/cm2, the CNT-PANI nanocomposite exhibits high specific capacitance of 201 F/g, in comparison with a value of 52 F/g for the CNT. And supercapacitors based on the CNT-PANI nanocomposite have an energy density of 6.97 Wh/kg and an outstanding power performance.更多还原