title: New insights on laser-induced graphene electrodes for flexible supercapacitors: tunable morphology and physical properties.
abstract: In certain polymers the graphenization of carbon atoms can be obtained by laser writing owing to the easy absorption of long-wavelength radiation, which generates photo-thermal effects. On a polyimide surface this process allows the formation of a nanostructured and porous carbon network known as laser-induced graphene (LIG). Herein we report on the effect of the process parameters on the morphology and physical properties of LIG nanostructures. We show that the scan speed and the frequency of the incident radiation affect the gas evolution, inducing different structure rearrangements, an interesting nitrogen self-doping phenomenon and consequently different conduction properties. The materials were characterized by infrared and Raman spectroscopy, XPS elemental analysis, electron microscopy and electrical/electrochemical measurements. In particular the samples were tested as interdigitated electrodes into electrochemical supercapacitors and the optimized LIG arrangement was tested in parallel and series supercapacitor configurations to allow power exploitation.
authors.affiliation: Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca Degli Abruzzi, 24, I-10129 Torino, Italy. Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Corso Trento, 21, I-10129 Torino, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Lamberti
authors.forename: Francesco
authors.initials: F
authors.lastname: Perrucci
authors.forename: Matteo
authors.initials: M
authors.lastname: Caprioli
authors.forename: Mara
authors.initials: M
authors.lastname: Serrapede
authors.forename: Marco
authors.initials: M
authors.lastname: Fontana
authors.forename: Stefano
authors.initials: S
authors.lastname: Bianco
authors.forename: Sergio
authors.initials: S
authors.lastname: Ferrero
authors.forename: Elena
authors.initials: E
authors.lastname: Tresso