Graphical analysis of electrochemical impedance spectroscopy of two consecutive irreversible electron transfers. 1. Theoretical study of the anodic dissolution of metals.
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.
García-Jareño
J J
JJ
Departament de Química Física, Universitat de València, C/Dr Moliner, 50, 46100, Burjassot, València, Spain.
Giménez-Romero
D
D
Keddam
M
M
Vicente
F
F