6533b827fe1ef96bd12870ce

RESEARCH PRODUCT

EIS and Ac-electrogravimetry study of PB films in KCl, NaCl, and CsCl aqueous solutions

And Michel KeddamDavid Giménez-romeroJosé Juan García-jareñoFrancisco VicenteHubert PerrotClaude Gabrielli

subject

Prussian blueAqueous solutionChemistryAnalytical chemistryQuartz crystal microbalanceElectrochemistrySurfaces Coatings and FilmsDielectric spectroscopychemistry.chemical_compoundElectrogravimetryElectrodeMaterials ChemistryPhysical and Theoretical ChemistryElectrical impedance

description

Prussian Blue films have been studied by means of ac-electrogravimetry, electrochemical impedance spectroscopy, and electrochemical quartz crystal microbalance in different aqueous salt solutions. Impedance data was interpreted in terms of a model based on a potential drop at the electrode/film interface and a potential drop at the film/solution interface. Quantitative results obtained by the fitting of impedance and ac-electrogravimetry allow to conclude that the main contribution to the potential drop at the film/solution interface is due to the dehydration-hydration process of cations on entering or leaving the film.

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