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Enhanced Performance of Graphene–Epoxy Flexible Capacitors by Means of Ceramic Fillers
Author(s) -
Sangermano Marco,
Buzzerio Gianfranco,
Rizzoli Rita,
Ortolani Luca,
Morandi Vittorio,
Pirri Fabrizio,
Chiolerio Alessandro
Publication year - 2015
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201400588
Subject(s) - epoxy , materials science , composite material , graphene , ceramic , dielectric , capacitor , adhesive , boehmite , polymer , nanotechnology , optoelectronics , voltage , aluminium , physics , layer (electronics) , quantum mechanics
Graphene–epoxy flexible capacitors are obtained by graphene–polymer transfer and bonding via UV‐cured epoxy adhesive. Ceramic fillers are dispersed into the epoxy resin with the aim of enhancing the capacitive behavior of the final device. Parallel plate capacitors in which epoxy resin is filled with ceramic nanoparticles demonstrate superior performance, up to two orders of magnitude better than unfilled samples. Zirconia, showing the highest dielectric constant, fails to give a stable output in the whole frequency range, as some competing phenomena occur and reduce the overall polarization of the system. Boehmite appears to be a better choice and gives reasonable performances, better than gibbsite