【摘要】 通过在多壁碳纳米管(MWCNTs)表面原位电化学聚合聚苯胺(PANI)制备聚苯胺/碳纳米管(PANI/MWCNTs)结构复合材料。用扫描电子显微镜(SEM)、X射线光电子能谱仪(XPS)对制备的聚合物形貌进行了表征。结果表明，制备的PANI/MWCNTs复合材料具有纤维状结构。采用循环伏安法(CV)和计时电流法(CP)表征该复合材料的电化学性能。通过调控了碳纳米管的管径和聚苯胺的厚度，研究其对复合材料比电容的影响规律。实验结果表明，在恒电流充放电的电流密度为0.5 mA/cm~2条件下，碳纳米管的管径为50 nm,聚苯胺循环沉积CV圈数为5圈时复合材料的比电容最大，达到147.6 F/g。以上研究为制备出新型结构的聚苯胺/碳纳米管超电容材料提供了科学指导和理论依据。更多还原

【Abstract】 The polyaniline/carbon nanotubes composites are prepared by in-situ electrochemical polymerization of polyaniline(PANI) on the surface of carbon nanotubes(MWCNTs). The morphology of the prepared composites is characterized by scanning electron microscopy(SEM) and X-ray photoelectron spectroscopy(XPS). It is found that the PANI/MWCNTs composites have a fibrous structure. The electrochemical properties of the composites are investigated by cyclic voltammetry(CV) and chronopotentiometry(CP). The specific capacitance of materials is investigated by modulating pipe diameter of multi-walled carbon nanotube and thickness of polyaniline. It is found that the specific capacitance of polyaniline/carbon nanotubes composite could reach 147.6 F/g with 50 nm pipe diameter of carbon nanotubes and 5 cycles for the deposition of polyaniline when the current density is 0.5 mA/cm~2. These studies would provide scientific guidance and theoretical basis for the preparation of polyaniline/carbon nanotubes supercapacitor materials.更多还原