Fig. 5. (a) Fit model for the high frequency part of the EIS spectra, highlighting the RQ circuit (dashed box), and applied equation for the RQ circuit and for the calculation of the effective capacity, Ceff,1. Fitting result: (b) ohmic resistance, R0; (c) resistance of the RQ circuit, R1; (d) effective capacity of the RQ circuit, Ceff,1; (e) time constant of the RQ circuit, τ1; (f) exponent of the RQ circuit, n1. A total of 140 spectra have been analysed and the obtained parameters are shown in this figure.
