Electric behavior of interlayer water in graphene oxide films

•Current–voltage characteristics of graphene oxide (GO) films.•The three distinctly different states of GO films.•A decrease in current with time at a constant voltage.•Elimination of water in the absence of electrochemical processes.•The theoretical model of water diffusivity in the process of elec...

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Bibliographic Details
Published in:Chemical physics letters 2016-03, Vol.648, p.87-90
Main Authors: Smirnov, V.A., Vasil’ev, V.P., Denisov, N.N., Baskakova, Yu.V., Dubovitskii, V.A.
Format: Article
Language:English
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Summary:•Current–voltage characteristics of graphene oxide (GO) films.•The three distinctly different states of GO films.•A decrease in current with time at a constant voltage.•Elimination of water in the absence of electrochemical processes.•The theoretical model of water diffusivity in the process of electroconductivity. Current–voltage characteristics of graphene oxide (GO) films were explored in water vapor as a function of film water content. It has been found that the films under study may contain free and bound water that can be completely eliminated in vacuum. A new phenomenon – a decrease in current with time at a constant voltage – was revealed. This was associated with elimination of water in the absence of electrochemical processes. The theoretical model was suggested to rationalize the behavior of water diffusivity in the process of electroconductivity.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2016.01.072