In this paper, a polypyrrole/vertically aligned carbon nanotube (PPy/VACNT) composite has been prepared by in situ chemical polymerization of pyrrole precursor on the surface of VACNT electrode. VACNTs has been prepared by plasma enhanced chemical vapor deposition (DC-PECVD) from a mixture of H₂ and C₂H₂ and were used as 3D nanoporous substrates. Effects of different dopant anions on the charge storage properties of PPy have been studied in this work. Camphor sulfonic acid, α-naphthalene sulfonic acid, anthraquinone-2-sulfonic acid sodium salt monohydrate/5-sulfosalicylic acid dehydrate, Sodium dodecylbenzenesulfonate and sodium dodecyl sulfate were used as anionic dopants. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and X-ray diffraction were used to characterize the electrodes. Cyclic voltammetry, galvanostatic charge-discharge and impedance spectroscopy technique in 1 M HCl electrolyte were applied to investigate the electrochemical properties of electrodes. The results showed the specific capacity of electrodes was found to be in the order of the mentioned dopants at 10 mV s⁻¹ scan rate. A maximum specific capacity of 332 C g⁻¹ was obtained with PPy/VACNT which was doped with camphor sulfonic acid at 10 mV s⁻¹ scan rate. In addition, the specific capacity of this electrode increased during cycling in 1 M HCl electrolyte which shows excellent cyclic life. The results show PPy-CSA/VACNT composite electrode have excellent characters of an electrode as a consequence of porous network structure and high electrochemical conduction which provides straight and fast ion transport pathways.

本文通过在VACNT电极表面上吡咯前体的原位化学聚合反应制备了聚吡咯/垂直排列的碳纳米管（PPy / VACNT）复合材料。VACNTs是通过H ₂和C ₂ H ₂的混合物通过等离子体增强化学气相沉积（DC-PECVD）制备的并用作3D纳米多孔基质。在这项工作中，已经研究了不同掺杂阴离子对PPy电荷存储性能的影响。樟脑磺酸，α-萘磺酸，蒽醌-2-磺酸钠一水合物/ 5-磺基水杨酸脱水物，十二烷基苯磺酸钠和十二烷基硫酸钠用作阴离子掺杂剂。使用扫描电子显微镜（SEM），透射电子显微镜（TEM），拉曼光谱和X射线衍射来表征电极。采用循环伏安法，恒电流充放电和阻抗谱技术在1 M HCl电解液中研究电极的电化学性能。结果表明，在10 mV s时，电极的比容量约为上述掺杂剂的数量级。^-1扫描速率。使用以10 mV s ^-1扫描速率掺杂樟脑磺酸的PPy / VACNT获得的最大比容量为332 C g ^-1。此外，在1 M HCl电解液中循环期间，该电极的比容量增加，显示出出色的循环寿命。结果表明，由于多孔网络结构和高电化学导电性，PPy-CSA / VACNT复合电极具有优异的电极特性，可提供直且快速的离子传输路径。