Harmonic impedance spectroscopy. Theory and experimental results for reversible and quasi-reversible redox systems

Danny K Y Wong*, Douglas R. MacFarlane

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    Theoretical equations are developed for the second and higher harmonic responses of reversible and quasireversible redox reactions to an applied sinusoidal waveform as a function of frequency. Finite layer diffusion is taken into account in the theoretical development in order to describe the low-frequency response appropriately. The description is considerably simplified by the definition of a harmonic impedance function. Experimental results are presented for the redox systems ferrocene/ferricinium ion in tetraethylammonium perchlorate and ferrocyanide/ferricyanide in aqueous potassium chloride and are compared quantitatively with the theoretical results.

    Original languageEnglish
    Pages (from-to)2134-2142
    Number of pages9
    JournalJournal of Physical Chemistry
    Volume99
    Issue number7
    Publication statusPublished - 1995

    Fingerprint

    Dive into the research topics of 'Harmonic impedance spectroscopy. Theory and experimental results for reversible and quasi-reversible redox systems'. Together they form a unique fingerprint.

    Cite this