Advanced negative electrode of Fe2O3/graphene oxide paper for high energy supercapacitors

The development of Fe2O3 with high conductivity and energy density is crucial for practical utilizations of supercapacitors. Here, we demonstrated the preparation of novel Fe2O3/graphene oxide paper (Fe2O3/GP) hybrid electrode for high density supercapacitors. Due to the characteristic features of large surface areas and fast electron transportation, the specific areal capacitance of the Fe2O3/GP was around 3.08 F cm(-2) at the charge-discharge current density of 5 mA cm(-2), which is nearly 14 times of the Fe2O3/carbon paper (Fe2O3/CP, 0.22 F cm(-2)). More importantly, the Fe2O3/GP hybrid electrode also retained about 95% of the initial capacitance after long-term cyclic process. These findings would help us to develop high effective and stable materials for energy storage devices. (C) 2017 Published by Elsevier Ltd.