Polypyrrole-coated Membrane Filter: A Novel Binder-free Three- Dimensional Porous Electrode for Supercapacitors

In this paper, polypyrrole was prepared using the vapor phase polymerization process on membrane filter. The resulting membrane filter is flexible with electrical conductivity of 6.7 S/cm. When used as a binder-free threedimensional porous electrode for supercapacitor, such membrane filter delivers high specific capacitances of 310 and 130 F/g at current densities of 1 and 5 A/g, respectively, with excellent cycling stability. Keywords: Membrane filter, polypyrrole, supercapacitor, three-dimensional porous electrode, vapor phase polymerization.