1973 Volume 46 Issue 12 Pages 3665-3671
Potentiostatic and potentiodynamic transients are theoretically analysed on the basis of the electrochemical mechanism for the hydrogen electrode reaction. The interface was assumed to consist of the metal surface, the plane on which the adsorbed intermediate of H2+(a) stays, and the diffuse double layer. The repulsive force between the intermediates was introduced by proportional approximation. From the results the depolarization observed in Tafel plots is understood as a non-steady state phenomenon, and observation by the potential-sweep method offers information on both the features of the adsorbed intermediate and the kinetics of the step preceding the rate-determining step.
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