Electroactivity and electrochemical stability of Graphene-PANI nanocomposites for supercapacitor electrodes
Abstract
In this paper, a nanocomposite of reduced graphene oxide and polyaniline (rGO/PANI) was prepared by in-situ method, which can be directly used as electrodes materials for a flexible supercapacitor. That rGO was dispersed on PANI supporter created a rGO/PANI nanocomposite which has high surface area. At the same current density, the specific capacitance of rGO/PANI is 1121.2 F g-1, while that of rGO is 182.7 F g-1 at 1 A g-1 in H2SO4 1 M medium. After 3000 cycles working at 5 A g-1, the specific capacitance retention of rGO/PANI is about 75 % compared to the first cycle, higher than rGO (62.7 %). The graphene and conductive polymer combination, which formed a high electroacitvity and electrochemical stability nanocomposite, can be applied on coating material of supercapacitor electrode.
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