Preparation of nanofilm of Polyaniline/Graphene “composite” for high performance supercapacitor (green method)

Abstract

A supercapacitor electrode was prepared by fabrication of hybrid nano composite film of Polyaniline (Pani) and reduced Graphene oxide (rGO). By facile two steps: method: chemical and electrochemical. The hybrid prepared nanofilm (Pani/rGO) was characterized by (uv-vis) spectrophotometry and (FTIR) spectroscopy. The surface morphology was examined by scanning electron microscopy (SEM). The electrochemical properties and capacity estimation were carried via cyclic voltammetry (CV) and galvanic charge/discharge (GCD). The film electrical resistance was studied by electrochemical impedance microscopy (EIS).

The specific capacity of prepared hybrid film was (650 F/g at 1 A/g) with long life stability (98% of initial specific capacity after 500 cycle). and good rate capability (73.5% retention from 0.3A/g to 5A/g).