title: Symmetric transparent and flexible supercapacitor based on bio-inspired graphene-wrapped Fe2O3nanowire networks.
abstract: Transition metal oxides with high specific capacitance materials are ideal for a new generation of high-performance transparent supercapacitors but are rarely reported. Commonly, the synthesis of the required nanostructured materials is a crucial step required to achieve the transparency of the device. In this study, a Fe2O3nanowire network transparent film is developed simply through air-solution interface reactions and wrapped in graphene shells for use as transparent electrodes. The Fe2O3nanowire networks surrounded by the graphene layer exhibit an effective encapsulation structure, providing rapid three-dimensional electron and ion transport pathways. The specific areal capacitance (3.3 mF cm-2at a scan rate of 10 mV s-1) was greatly improved, which is at least one hundred times higher than that for transparent devices based on planar chemical vapor deposition graphene. Furthermore, the films have a power density of 191.3 W cm-3, which is higher than that of electrolytic capacitors, an energy density of 8 mWh cm-3, which is comparable to that of lithium thin-film batteries, and superior cycling stability.
authors.affiliation: School of Material and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
authors.forename: Xuankai
authors.initials: X
authors.lastname: Huang
authors.forename: Haiyan
authors.initials: H
authors.lastname: Zhang
authors.forename: Na
authors.initials: N
authors.lastname: Li