ABSTRACT

A solid-state supercapacitor was designed based on conjugated polymer – quantum dots composite synthesized by the in-situ chemical method. The polypyrrole-graphene quantum dots composite (PGC) was used to preparation of flexible supercapacitor electrode with various PVA/KOH, PVA/H3PO4, PVA/H₂SO₄, PVA/KCl gel electrolytes. It is observed that PPY-GQDs exhibited a maximum specific capacitance of 730 F/g for PVA/H₃PO₄ gel electrolyte. The Nyquist plots of supercapacitors have been measured. The optimization of concentrations of electrically conducting substances in polymer gel enhanced the electrochemical properties of the supercapacitor. This shows the latest accomplishment in this field and provides insight advancement in supercapacitor.

摘要

基于共轭聚合物-通过原位化学方法合成的量子点复合材料设计了固态超级电容器。聚吡咯-石墨烯量子点复合材料（PGC）用于制备具有各种PVA / KOH，PVA / H3PO4，PVA / H ₂ SO ₄，PVA / KCl凝胶电解质的柔性超级电容器电极。可以观察到，PPY-GQD对PVA / H ₃ PO ₄的最大比电容为730 F / g凝胶电解质。已经测量了超级电容器的奈奎斯特图。聚合物凝胶中导电物质浓度的优化增强了超级电容器的电化学性能。这显示了该领域的最新成就，并提供了超级电容器方面的见识进展。