In this work a hybrid graphene-based flexible micro-supercapacitor (MSC) exploiting a novel composite material was fabricated and extensively characterized. TheMSCelectrodes have been obtained from a synthesized composite aerogel of reduced graphene oxide and polycrystalline nanoparticles of molybdenum (IV) oxide (MoO2) and then dispersed in a solution containing poly(3,4-ethylenedioxythiophene) (PEDOT). Usually in MSCs the electrons have to percolate through the nanostructured Three-dimensional (3D) matrix in order to reach the collectors, made by metal thin films that provide electrical contacts only on the surface of active material. In the attempt to enable a more efficient charge transfer and to allow direct electrical contact without metal deposition, in this study a highly doped PEDOT acting both as current collector and as binder for the nanocomposite material has been employed. 3D MSCs were fabricated through a Lithographie, Galvanoformung, Abformung (LIGA)-like process to obtain high aspect ratio microstructures in polydimethylsiloxane replicas. Capacitance values of 94 F g1 for the nanocomposite and of 14 mF cm-2 for the device were achieved. Moreover, bending test has demonstrated good performance preservation in aUshape conformation of the device.
A novel graphene based nanocomposite for application in 3D flexible micro-supercapacitors / Marasso, S.L.; Rivolo, P.; Giardi, R.; Mombello, D.; Gigot, A.N.; Serrapede, M.; Benetto, S.; Enrico, A.; Cocuzza, M.; Tresso, E.M.; Pirri, C.. - In: MATERIALS RESEARCH EXPRESS. - ISSN 2053-1591. - STAMPA. - 3:6(2016), p. 065001.
|Titolo:||A novel graphene based nanocomposite for application in 3D flexible micro-supercapacitors|
|Data di pubblicazione:||2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1088/2053-1591/3/6/065001|
|Appare nelle tipologie:||1.1 Articolo in rivista|