The above-discussed results show that to obtain reliable EIS data it is important that the system is stable in the time interval required to complete the measurement one-by-one frequency in the entire frequency range (usually about 20 min). At the same time, any changes that occurred in the system, mostly discrepancies between the real-time OCP and potential fixed for the EIS measurement, would cause a change in the EIS response . To minimize the effect of non-stationarity on the EIS measurements of electrochemical systems it is possible to utilize multisine dynamic EIS. The general idea of this approach is to obtain the impedance of the system by applying a multicomponent perturbation signal , which significantly reduces the measurement time. In our approach, we utilize the lowest frequency of 0.7 Hz .