In recent years, special attention of energy researchers has been paid to application of polymer–carbon dots composite in energy storage systems. In this work, for the first time, we introduced a combination of polyaniline, carbon dots, polypyrrole and graphene as high performance supercapacitor. Synergistic effect of conductive polymers combined with specific properties of graphene and carbon dots improved the electrochemical performance of supercapacitor. Carbon dots was prepared from carrot juice hydrothermally as a biomass carbon source and polyaniline–carbon dots was synthesized via in-situ polymerization. Electrochemical performance of polyaniline with different carbon dots content was investigated and nanocomposite of polyaniline with 10 wt% carbon dots was selected to mix with polypyrrole–graphene to obtain a high potential window supercapacitor. The as-prepared composite was characterized by several spectroscopic and microscopic techniques. The electrochemical properties of this electrode were studied by cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy techniques. A polyaniline–carbon dots (10%)/polypyrrole–graphene has showed the maximum specific capacitance of 396 F g⁻¹. Value of specific capacity remained at 62% under the current density of 5 A g⁻¹.

近年来，能源研究人员对聚合物-碳点复合材料在储能系统中的应用给予了特别的关注。在这项工作中，我们首次引入了聚苯胺，碳点，聚吡咯和石墨烯的组合作为高性能超级电容器。导电聚合物的协同作用与石墨烯和碳点的特殊性能相结合，改善了超级电容器的电化学性能。碳点由胡萝卜汁水热制备，作为生物质碳源，聚苯胺-碳点通过原位聚合合成。研究了具有不同碳点含量的聚苯胺的电化学性能，并选择了具有10 wt％碳点的聚苯胺的纳米复合材料与聚吡咯-石墨烯混合以获得高潜力的窗口超级电容器。所制备的复合材料通过几种光谱学和显微技术表征。通过循环伏安法，恒电流充/放电和电化学阻抗谱技术研究了该电极的电化学性能。聚苯胺-碳点（10％）/聚吡咯-石墨烯的最大比电容为396 F g 和电化学阻抗谱技术。聚苯胺-碳点（10％）/聚吡咯-石墨烯的最大比电容为396 F g 和电化学阻抗谱技术。聚苯胺-碳点（10％）/聚吡咯-石墨烯的最大比电容为396 F g^-1。在5 A g ^-1的电流密度下，比电容的值保持在62％。