For modern life on this planet, humans desire a pleasant existence. To fulfill this, one of the demands is to have flexible, portable, and wearable electronic devices. In this connection, flexible supercapacitors (FSCs) have recently attracted researchers’ interest as one of the most promising electrical energy storage (EES) devices owing to their foldability, lightweight, and ability to integrate with a large number of portable wearable electronics. In this investigation, we demonstrated the fabrication of a flexible supercapacitor device by using 2,2′-(1,3,8,10-tetraoxo-1,3,8,10-tetrahydroanthra2,1,9-def:6,5,10-d′,e′,f ′diisoquinoline-2,9-diyl)bis(N-(2-aminoethyl)-3-(1H-indol-3-yl)propanamide) (PDI-Trp-EDA) bolaamphiphile pillared graphene oxide (GO) as the active electrode material. Organic PDI-Trp-EDA bolaamphiphile can be derived from renewable sources. The PDI-Trp-EDA-GO/graphite foil (GF) electrode is successfully fabricated and tested for its utilization in flexible symmetric supercapacitor (FSSC) devices. The PDI-Trp-EDA-GO/GF electrode exhibits good mechanical flexibility upon bending from a 0 to 180° bending angle. As such, the FSSC device based on the PDI-Trp-EDA-GO/GF electrode displayed excellent electrochemical performance at both 0 and 180° bending angles. It is noticeable that no appreciable loss in specific capacitance of the cell is observed over 5000 galvanostatic charge–discharge cycles after bending to 180°, suggesting strong flexibility of the PDI-Trp-EDA-GO/GF electrode. In addition, excellent energy and power densities are observed. The present work demonstrates the significant potential of the PDI-Trp-EDA-GO/GF material for flexible electrical energy storage devices that can provide opportunity to fabricate eco-friendly, lightweight, mechanically robust, and high-performance FSSCs, which in turn can be assembled for powering portable and wearable electronic devices.
Ugale et al. (Fri,) studied this question.