Two-step synthesis of millimeter-scale flexible tubular supercapacitors.

ABSTRACT: Flexible supercapacitors have been demonstrated to be ideal energy storage devices owing to their lightweight and flexible nature and their high power density. However, conventional film-shaped devices struggle to meet the requirements of application in complicated situations, including medical instruments and wearable electronics. Here we report a hollow-structured flexible tubular supercapacitor prepared from a scalable method with the same diameter as electric wires. This new supercapacitor design allows for a large specific capacitance of 102 F g^-1 at a current density of 1 A g^-1 with excellent air-working stability over 10,000 cycles. It also shows a high energy density of 14.2 Wh kg^-1 with good rate capability even at a current density of 10 A g^-

SUBMITTER: Lu C 

PROVIDER: S-EPMC9814076 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature