ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OF COBALT(II)-HEXACYANOFERRATE FILM MODIFIED ELECTRODES

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Publikationens författare: GAO ZQ, BOBACKA J, IVASKA A
Förläggare: PERGAMON-ELSEVIER SCIENCE LTD
Publiceringsår: 1993
Tidskrift: Electrochimica Acta
Tidskriftsakronym: ELECTROCHIM ACTA
Volym: 38
Nummer: 2-3
Artikelns första sida, sidnummer: 379
Artikelns sista sida, sidnummer: 385
Antal sidor: 7
ISSN: 0013-4686


Abstrakt

ac impedance studies on cobalt(II)-hexacyanoferrate (CoHCF) film modified electrodes have been carried out in different aqueous solutions. The experimental impedance data were fitted to an equivalent electrical circuit giving values of the different electrochemical parameters associated with mass transport, charge transfer and double layer. Charge transfer resistances measured at the standard potential of the system are rather low and in agreement with the highly reversible behaviour of this modified electrode as found in cyclic voltammetry. The value of the capacitance associated with the film was found to vary with the concentration of the electrolyte.


Nyckelord

CHEMICALLY MODIFIED ELECTRODE, Cobalt, HEXACYANOFERRATE, INORGANIC FILM

Senast uppdaterad 2019-15-12 vid 03:44