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Charge transport in prussian blue films deposited on ito electrodes

✍ Scribed by J.J. García-Jareño; J. Navarro-Laboulais; F. Vicente

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
782 KB
Volume
41
Category
Article
ISSN
0013-4686

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✦ Synopsis

Charge

transport processes that can occur in Prussian Blue films deposited on IT0 (indiumtin oxidef electrodes in contact with aqueous solutions have been studied. The concentration in the solution of some ions such as the proton or the potassium influence the films conductivity as well as the degree of hydration of the film. This points to the fact that Prussian Blue films act as ionic conductors when they are immersed in aqueous solutions. Furthermore, the apparent diffusion coefficient calculated from impedance spectra of PB films increases with the temperature which confirms the idea of an ionic conductor. The impedance spectra for the Eve&t's Salt films, however, differ from the PB films and is much less sensitive to temperature.

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