Hierarchically structured MnO₂/graphene/carbon fiber and porous graphene hydrogel wrapped copper wire for fiber-based flexible all-solid-state asymmetric supercapacitors

Abstract

Two types of fiber-based electrodes, <italic>i.e.</italic> hierarchically structured MnO₂/graphene/carbon fiber and 3D porous graphene hydrogel wrapped copper wire, were successfully fabricated for high performance flexible all-solid-state asymmetric supercapacitors.