EIS of multistep mechanisms
I have developed a general theory for the electrochemical impedance of multistep mechanisms. This theory enables prediction of the number of bends in a Bode plot for an arbitrary mechanistic scheme, without a detailed mathematical analysis, and predicts types of equivalent circuits for some classes of mechanisms.
A tutorial introduction to some aspects of the theory is given in this powerpoint presentation, which is an annotated and slightly expanded version of a talk given at the 6th International Symposium on Electrochemical Impedance Spectroscopy, Cocoa Beach, Florida, 2004.
- D.A. Harrington and P. van den Driessche, Mechanism and Equivalent Circuits in EIS, Electrochim. Acta, 56 (2011) 8005-8013.
- D.A. Harrington and P. van den Driessche, Equivalent Circuits for Some
Surface Electrochemical Mechanisms, J. Electroanal. Chem., 567 (2004)
153-166.
- J. D. Campbell, D. A. Harrington, P. van den Driessche and J. Watmough,
Stability of Surface Mechanisms with Three Species and Mass-Action Kinetics, J. Math. Chem., 32 (2002) 281-301.
- D.A. Harrington and P. van den Driessche, Stability and Electrochemical
Impedance of Mechanisms with a Single Adsorbed Species, J. Electroanal.
Chem., 501 (2001) 222-234.
- D.A. Harrington, Stability and Inductive Behaviour in Electrochemical Impedance, Proc. of Corrosion and Prevention 2000, November 19-22, Auckland, Proceedings Volume 2000, paper 112 pp. 1-7, Australasian Corrosion Association, Brentford Square, Victoria, Australia.
- D.A. Harrington and P. van den Driessche, Impedance of Multistep
Mechanisms: Equivalent Circuits at Equilibrium, Electrochim. Acta, 44
(1999) 4321-4329.
- D.A. Harrington, Electrochemical Impedance of Multistep Mechanisms:
Mechanisms with Static Species, J. Electroanal. Chem., 449 (1998) 29-37.
- D.A. Harrington, Electrochemical Impedance of Multistep Mechanisms: A
General Theory, J. Electroanal. Chem., 449 (1998) 9-28.
- D.A. Harrington, Electrochemical Impedance of Multistep Mechanisms:
Mechanisms with Diffusing Species, J. Electroanal. Chem., 403 (1996)
11-24.
EIS for large amplitude signals
A theory for large-amplitude and second-harmonic impedances for mechanisms with a single adsorbed species was presented in Can. J. Chem., 75 (1997) 1508 , and the MAPLE worksheet is available for download.