Fabrication of High-Performance Flexible Supercapacitor Electrodes with Poly(3,4-ethylenedioxythiophene) (PEDOT) Grown on Carbon-Deposited Polyurethane Sponge

Composite porous supercapacitor electrodes were prepared by growing poly(3,4-ethylenedioxythiophene) (PEDOT) on graphite nanoplatelet- or graphene nanoplatelet-deposited open-cell polyurethane (PU) sponges via a vapor phase polymerization (VPP) method. The resulting composite exhibited great capacitive performance, with PEDOT acting as both the conductive binder and active material. chemical composition was characterized Raman spectroscopy surface morphology scanning electron microscopy (SEM). Cyclic voltammetry (CV), charge-discharge (CD) tests electrochemical impedance utilized to study electrical performance of produced in symmetrically configured cells. carbon material deposited PU substrates temperature affected significantly properties sponges. highest areal specific capacitance 798.2 mF cm−2 obtained sponge fabricated VPP at 110 °C substrate. retention this electrode 101.0% after 10,000 charging–discharging cycles. high flexibility, capacitance, excellent long-term cycling stability low cost make these promising materials for supercapacitors.