Kinetic study of the constant-potential electropolymerization of aniline in perchloric acid solution

Aniline was electropolymerized in perchloric acid solution at constant potentials. The chronoamperograms definitely had two different time dependences on the electrolytic current. During the initial stage, the current increased with the square of the electrolysis time and then increased linearly with the time. The electrolytic current during the polymerization was analyzed on the basis of metal electrodeposition models. The rate constant of the polymerization reaction was found to be proportional to the concentration of the anion and aniline.