Origin of current oscillations in a polymeric electrochemically controlled element

We present a model for describing electrical properties of an electrochemically controlled heterojunction between a conducting polymer (polyaniline) and a solid electrolyte (lithium salt doped polyethylene oxide). In particular, the difference in the kinetics of the conductivity variation for different polarities of the bias voltage and appearance of current oscillations at constant applied voltage are considered. The results of our simulation are in good agreement with published experimental data.