Characteristics of Electrochemically Synthesized Polymer Electrodes: VI . Kinetics of the Process of Polypyrrole Oxidation

Abstract

The kinetic parameters of the process of oxidation (p‐doping) of polypyrrole in electrochemical cells containing a solution of lithium perchlorate in propylene carbonate have been determined by cyclic voltammetry, frequency response analysis, and galvanostatic pulse transients. The results are interpreted on the basis of models developed for intercalation electrodes, and the validity of the three techniques is discussed in relation to the geometry and morphology of the polymer electrode. Finally, the diffusion of the dopant ion in the polymer is evaluated and discussed.