Aqueous Inks of Pristine Graphene for 3D Printed Microsupercapacitors with High Capacitance.

ABSTRACT: Three-dimensional (3D) printing is gaining importance as a sustainable route for the fabrication of high-performance energy storage devices. It enables the streamlined manufacture of devices with programmable geometry at different length scales down to micron-sized dimensions. Miniaturized energy storage devices are fundamental components for on-chip technologies to enable energy autonomy. In this work, we demonstrate 3D printed microsupercapacitor electrodes from aqueous inks of pristine graphene without the need of high temperature processing and functional additives. With an intrinsic electrical conductivity of ∼1370 S m^-1 and rationally designed architectures, the symmetric microsupercapacitors exhibit an exceptional areal capacitance of 1.57 F cm^-2 at 2 mA cm

SUBMITTER: Tagliaferri S 

PROVIDER: S-EPMC8482754 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature