Wet spinning of hollow graphene fibers with high capacitance
Publication Name
Chemical Engineering Journal
Abstract
Herein, we report a facile coaxial wet-spinning strategy to continuously produce hollow graphene fibers (HGF) with the merits of high conductivity, excellent flexibility, and enhanced electrode–electrolyte contact. The hollow structure is achieved by introducing reductant-containing coagulant solution into the fiber core with a composition identical to the spinning bath. The produced fibers were assembled into a supercapacitor device with an ultra-high specific capacitance of 711 mF/cm2 (i.e. 33.5 mF/cm or 190F/cm3). The combination of outstanding electrochemical and mechanical properties makes this HGF a promising candidate for use in wearable supercapacitors and electronics.
Open Access Status
This publication is not available as open access
Volume
453
Article Number
139920
Funding Number
CE 140100012
Funding Sponsor
Australian National Fabrication Facility