Conducting Polymer Hydrogels as 3D Electrodes: Applications for Supercapacitors

Abstract

The prepn. of highly-swelled hydrogel electrodes made of an aq. dispersion of PEDOT-PSS (poly(3,4-ethylene-dioxythiophene)-poly(styrenesulfonate), trade-name Baytron-P) ionically crosslinked into a nanometer-scale conducting network on Au is described. A composite made by electrochem. growing polypyrrole on the electrode had improved mech. properties and higher capacitance. The morphol. of the electrodes was studied using AFM and Auger electron spectroscopy, and the applicability of the electrodes in supercapacitors was evaluated by chrono-potentiometric studies and impedance measurements. [on SciFinder(R)]