BIFURCATION-ANALYSIS FOR THE VOLMER-HEYROVSKY MECHANISM

A new shape of multisteady states current-potential curve is presented for the Volmer-Heyrovsky mechanism under Frumkin isotherm conditions. Linear stability of the steady states is studied for galvanostatic an d potentiostatic regulation by drawing the pole and zero map of the el ectrode impedance. Non-linear stability is studied by calculating line ar potential sweep voltammograms. The shapes of the voltammograms and those of steady state current-potential curves are the same as the sha pes of the curves observed in the experimental study of the pitting of metals.