“…This explains the long decay time of the polarization or depolarization current at room temperature. A similar equation, where the sum of the constant current and some exponential decays takes place, was used for depolarization currents in Benchenane- Mehor et al (2013). We note that PDC technique (measurement of the polarization and depolarization currents) does not allow us to determine which type of ions is responsible for ionic currents.…”