Details

This Demonstration uses an orthonormal representation for the impedance of electrochemical systems. Two examples are dealt with, A and B.

A. equivalent circuit for a Tafelian electrochemical system with:

,

where is the angular frequency, is the charge transfer resistance and is the interfacial double-layer capacitance.

B. Randles circuit for the electrochemical (E) reaction occurring at the interface with a quiescent solution:

and

where is the Warburg parameter.

References

[1] J.-P. Diard, B. Le Gorrec and C. Montella, Cinétique electrochimique, Paris: Hermann, 1996.

[2] C. Montella, J.-P. Diard and B. Le Gorrec, Exercices de cinétique electrochimique, II Méthode d'impédance, Paris: Hermann, 2005.

[3] M. E. Orazem and B. Tribollet, Electrochemical Impedance Spectroscopy, Hoboken, NJ: John Wiley & Sons, 2008.