RT info:eu-repo/semantics/article
T1 Flexible Viologen Electrochromic Devices with Low Operational Voltages Using Reduced Graphene Oxide Electrodes
A1 Palenzuela, Jesús
A1 Viñuales, Ana
A1 Odriozola, Ibon
A1 Cabañero, Germán
A1 Grande, Hans J.
A1 Ruiz Fernández, Virginia
K1 Electrochromism
K1 Flexible electrodes
K1 Graphene oxide
K1 Viologen
K1 Electroquímica
K1 Electrochemistry
K1 Electrotecnia
K1 Electrical engineering
AB Reduced graphene oxide (RGO) films have been electrodeposited on indium tin oxide-coated polyethylene terephthalate (ITO-PET) substrates from graphene oxide (GO) solutions, and the resulting flexible transparent electrodes have been used in electrochromic devices of ethyl viologen (EtV2+). The electrochromic performance of devices with bare ITO-PET electrodes and ITO-PET coated with RGO has been compared. Under continuous cycling tests up to large voltages, the RGO film was oxidized and dispersed in the electrochromic mixture. The resulting devices, which contained GO and RGO in the electrochromic mixture, showed lower switching voltages between the colored and bleached states. This electrocatalytic activity of the solution-phase GO/RGO pair toward the electrochemical reaction of the electrochromic redox couple (the dication EtV2+ and the radical cation EtV+•) allowed devices with an optical contrast higher than the contrast of those free of GO at the same applied voltage.
PB American Chemical Society
SN 1944-8244
YR 2014
FD 2014-08
LK http://hdl.handle.net/10259/10303
UL http://hdl.handle.net/10259/10303
LA eng
NO Financial support from the Spanish MICINN (V .R. Ramón y Cajal Program) and the Basque Government (Etortek Program, nanoIKER Project IE11-304) is gratefully acknowledged.
DS Repositorio Institucional de la Universidad de Burgos
RD 13-mar-2025