Vertically Aligned Conductive Polymeric Nanotubes Grown on Percolated Multiwalled Carbon Nanotube Films for Supercapacitor Electrodes

Abstract

Electrodeposition assisted by nanoporous membranes is a method for synthesizing replicable nanostructures and is used for electropolymerization of conductive polymeric nanotubes (CPNTs). However, the traditional method involves the use of expensive equipment and materials for covering one side of the insulating membranes with a metallic film, which acts as an electrode in an electrodeposition process for self-supporting system fabrication. We propose an approach using multiwalled carbon nanotubes (MWCNTs) as a conductive substrate for the growth of vertically aligned polypyrrole (PPy) and poly(3,4-ethylene dioxythiophene) (PEDOT) nanotubes (when the template is removed) by electropolymerization. The hybrid system of CPNTs grown on a film of percolated MWCNTs was synthesized using electropolymerization and characterized to demonstrate its morphology and chemical composition. These vertically aligned hybrid systems of CPNTs grown on a film of percolated MWCNTs were electrochemically characterized in a three-electrode configuration showing high capacitances and power densities values compared with similar systems fabricated by more complicated routes. This approach paves the way for easy fabrication and implementation of all-organic electrodes, making them candidates for highperformance flexible energy storage devices.

Development of an all‐electrospun high‐performance textile supercapacitor for wearable device applications

“…The same behavior was obtained compared with the results from cyclic voltammetry: the PANI fibers SCs showed higher capacitances than the PANI films SCs, and the SCs with PES‐PAN separators showed negligible differences in capacitance values than the SCs with cellulose separator, despite a further EIS analysis indicates a better performance of the PES‐PAN separator that showed a higher effective capacitance, as it is discussed later in this manuscript. The curves showed nearly symmetrical triangular forms corresponding to capacitive behavior 57 . The decrease in the discharging time when increasing the current density applied to the four devices is due to the diffusion limits in charge transport presented in high currents 58 .…”

“…The curves showed nearly symmetrical triangular forms corresponding to capacitive behavior. 57 The decrease in the discharging time when increasing the current density applied to the four devices is due to the diffusion limits in charge transport presented in high currents. 58 Figure S4 shows the capacitance values of the four SC devices obtained with the GCD technique.…”