Printable magnetite and pyrrole treated magnetite based electrodes for supercapacitors

Abstract

Flexible magnetite (Fe₃O₄) based film electrodes were fabricated by combining facile wet chemistry approaches with a cost-effective spray deposition route. One-dimensional Fe₃O₄ nanowire and pyrrole treated Fe₃O₄ nanowire electrodes composed of randomly oriented interpenetrating networks exhibited a high capacitance of 106 F g⁻¹ and 190 F g⁻¹ respectively along with excellent electrochemical stability in an aqueous electrolyte. The supercapacitor configurations and the scalable fabrication technique provides a new solution for large-scale production of printable and flexible energy storage devices.