Abstract

A method has been developed for synthesis of a composite coating based on polyaniline by introducing dispersed IR-pyrolyzed polyacrylonitrile, activated by alkaline treatment, into a polymer matrix. The coating is applied from a suspension in formic acid onto a graphite foil that has been previously subjected to anodic etching to improve the wettability with an electrolyte. The produced composite electrodes for sulfuric acid supercapacitors demonstrate high stability during long-term cycling. The specific electrochemical capacitance was 0.89 F cm^–2, which is more than 2 times higher than that for an electrode with a polyaniline coating (0.41 F cm^–2) tested under the same conditions. The main contribution to the increase in the total capacitance is made by the double-layer capacitance due to the rise in the active electrode surface.

中文翻译：

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基于聚苯胺和活化红外热解聚丙烯腈作为有望的超级电容器电极材料的复合材料

摘要

已经开发出一种用于通过将经碱处理活化的分散的IR-热解聚丙烯腈引入聚合物基质中来合成基于聚苯胺的复合涂层的方法。将涂层从甲酸的悬浮液中涂到石墨箔上，该石墨箔已预先进行了阳极蚀刻，以改善与电解质的润湿性。所生产的用于硫酸超级电容器的复合电极在长期循环中显示出高稳定性。比电化学电容为0.89 F cm ^-2，比带有聚苯胺涂层的电极（0.41 F cm ^-2）高2倍以上）在相同条件下进行测试。由于有源电极表面的上升，双层电容对总电容的增加做出了主要贡献。