Journal of The Electrochemical Society · 2018 · 30 citations · 37 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryMaterials ChemistryThin FilmsElectrochromic MaterialsElectrode MaterialsElectrode-electrolyte InterfacesGraphene NanomaterialsThin Film Optical PropertiesThin-film MaterialsColoration EfficiencyElectrochemical DepositionElectrochromic DevicesElectrochromic Thin FilmsFlexible Electrochromic DevicesGraphene ElectrodesGraphene-based ElectrodesIon Diffusion
Flexible multi-color electrochromic V2O5 thin films have been prepared by electrochemical deposition on the double-layer Graphene/PET substrates. The deposited films have a layered structure with nano-crystals in the amorphous matrix, which contributes to an ultrahigh coloration efficiency of ∼555.83 cm2 C−1@800 nm and a large transmittance modulation of 68.94% @800 nm. The large interlayer distance of 1.20 nm, good electrolyte penetration, and short lithium ion diffusion distance make some key electrochromic parameters competitive in our proposed devices. The low-temperature-processed V2O5 thin films on Graphene would provide us an opportunity to design and prepare flexible electrochromic devices.
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