Constant phase angle impedance on solid electrolyte Na-montmorillonite / graphite

AC impedance measurements for the cells with Na-montmorillonite as solid electrolyte and either graphite or a homogeneous mixture of Na-montmorillonite and graphite as electrodes are reported. The interpretation and mathematical description of the observed constant-phase-angle (CPA) behaviour with φ > 45 ° or φ < 45 ° are given.