6533b852fe1ef96bd12ab9a3

RESEARCH PRODUCT

Singular points of electrochemical impedance function

Francisco VicenteDavid Giménez-romeroJosé Juan García-jareño

subject

Work (thermodynamics)ChemistryFaradaic impedanceMathematical analysisAnalytical chemistryGeneral Physics and AstronomySurfaces and InterfacesGeneral ChemistryFunction (mathematics)Singular point of a curveCondensed Matter PhysicsKinetic energyElectrochemistrySurfaces Coatings and FilmsNyquist plotElectrical impedance

description

A model of EIS response for a system with two consecutive monoelectron transfers is developed in this work. Relevant information on the mechanism of these electrochemical systems is provided by the parametrical identification of the theoretical faradaic impedance function. The kinetic parameters of this model are easily calculated through the calculus of the characteristic points of this function. This calculus allows to interpret the metals anodic dissolution according to the reaction mechanism and, therefore, allows us to establish easily the kinetic and thermodynamic behaviour of these systems with respect to any experimental parameter.

https://doi.org/10.1016/j.apsusc.2004.05.170