6533b834fe1ef96bd129cbc0

RESEARCH PRODUCT

Graphical Analysis of Electrochemical Impedance Spectroscopy of Two Consecutive Irreversible Electron Transfers. 1. Theoretical Study of the Anodic Dissolution of Metals

Keddam MDavid Giménez-romeroJosé Juan García-jareñoFrancisco Vicente

subject

Reaction mechanismChemistryBode plotFaradaic impedanceKineticsMaterials ChemistryAnalytical chemistryElectronPhysical and Theoretical ChemistryKinetic energyElectrical impedanceSurfaces Coatings and FilmsDielectric spectroscopy

description

A general function for the faradaic impedance associated to a two consecutive single electron transfer mechanism followed by a irreversible first-order step has been obtained on the basis of formal kinetics. Kinetic parameters associated to this reaction mechanism can be obtained from the different kind of plots of the impedance function: Nyquist, Cole-Cole, and different Bode plots. A strategy for obtaining all parameters is suggested and analyzed on a detailed flowchart.

https://doi.org/10.1021/jp0467954