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, SIMONE LUIGI; Rivolo, Paola; Giardi, R.; Mombello, D.; Gigot, ARNAUD NICOLAS; Serrapede, Mara; Benetto, Simone; Enrico, A.; Cocuzza, Matteo; Tresso, Elena Maria; Pirri, Candido. - In: MATERIALS RESEARCH EXPRESS. - ISSN 2053-1591. - STAMPA. - 3:6(2016), p. 065001. [10.1088/2053-1591/3/6/065001]

A novel graphene based nanocomposite for application in 3D flexible micro-supercapacitors

MARASSO, SIMONE LUIGI;RIVOLO, PAOLA;GIGOT, ARNAUD NICOLAS;SERRAPEDE, MARA;BENETTO, SIMONE;COCUZZA, MATTEO;TRESSO, Elena Maria;PIRRI, Candido
2016

Abstract

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2649415
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