Hollow polypyrrole films: Applications for energy storage devices

Hexagonally arrayed structures of colloidal crystals with uniform particle size are good candidates for templates for synthesizing porous nanostructures. Herein, we present the first reported use of three-dimensionally (3D) ordered porous structures to increase the energy storage abilities of conducting polymer based energy storage devices. A robust 3D colloidal crystal template was prepared using a colloidal suspension. Polypyrrole (PPy) was deposited into the interstices between the colloidal spheres by electrochemical infiltration. PPy inverse nanoporous structures were obtained by dissolving the colloidal template in a solvent (99.5% Benzene). The morphologies of nanoporous PPy structures and their electrochemical characteristics were investigated.