Synthesis and characterization of (polypyrrole/carbon) nanotubes/metal oxide composites for application as supercapacitors

摘要

The production of nanostructured organic materials represents an interesting and promising area of investigation if considered the increasing demand for ecofriendly techniques which require good levels of high power density and energy density. In this work we have explored the synthesis of hybrid composites based on interaction of carbon nanotubes, polypyrrole nanofibers and metal oxide nanoparticles. Electrical characterization of resulting powder indicates that improvement in the conductivity is verified with mutual inclusion of carbon nanotubes and metal oxide particles, as a result of synergistic interaction of electrical double layer capacitance (EDLC) and pseudocapacitance of components. Electrochemical properties of material indicate that superior specific energy density is result of strong interaction between nanotubes and homogeneous distribution of metal oxide nanoparticles on surface of synthesized nanotubes.