Destabilizing Role of the Double Layer for a Dissolution-Depassivation Mechanism

Science Direct Working Paper No S1574-0331(04)70445-2

39 Pages Posted: 30 May 2017 Last revised: 23 Dec 2017

See all articles by Jean-Paul Diard

Jean-Paul Diard

Laboratoire d’´Electrochimie et de Physicochimie des Mat´eriaux et Interfaces

C. Montella

Institut des Sciences et Techniques de Grenoble

Date Written: March 2001

Abstract

A new dissolution-depassivation mechanism showing a non-trivial complex S-shaped polarization curve due to the Frumkin isotherm hypothesis has been studied. A potential domain exists for sufficiently low values of the Frumkin interaction parameter where a negative differential resistance is observed. For this mechanism, the electrode potential acts as an essential system variable due to the double layer capacitance. Harmonic and relaxation oscillations can be observed for the dissolution-depassivation mechanism under galvanostatic control. Hopf bifurcation gives rise to oscillations under galvanostatic control only for sufficiently high values of the double layer capacitance. Bifurcation diagrams are plotted.

Keywords: Hopf bifurcation, oscillation, double layer capacitance, EIS

Suggested Citation

Diard, Jean-Paul and Montella, C., Destabilizing Role of the Double Layer for a Dissolution-Depassivation Mechanism (March 2001). Science Direct Working Paper No S1574-0331(04)70445-2, Available at SSRN: https://ssrn.com/abstract=2969426

Jean-Paul Diard (Contact Author)

Laboratoire d’´Electrochimie et de Physicochimie des Mat´eriaux et Interfaces ( email )

UMR 5631 CNRS-INPG, associ´e` a l’UJF, Domaine Un
Saint Martin d’H`eres, 38402
France

C. Montella

Institut des Sciences et Techniques de Grenoble

Grenoble
France

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