Laser photonic-reduction stamping for graphene-based micro-supercapacitors ultrafast fabrication.

ABSTRACT: Micro-supercapacitors are promising miniaturized energy storage devices that have attracted considerable research interest. However, their widespread use is limited by inefficient microfabrication technologies and their low energy density. Here, a flexible, designable micro-supercapacitor can be fabricated by a single pulse laser photonic-reduction stamping. A thousand spatially shaped laser pulses can be generated in one second, and over 30,000 micro-supercapacitors are produced within 10 minutes. The micro-supercapacitor and narrow gaps were dozens of microns and 500 nm, respectively. With the unique three-dimensional structure of laser-induced graphene based electrode, a single micro-supercapacitor exhibits an ultra-high energy density (0.23 Wh cm^-3), an ultra-small time cons

SUBMITTER: Yuan Y 

PROVIDER: S-EPMC7712890 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature