平衡、非平衡、交流状态下电化学双电层建模的初学者指南

张露露, 李琛坤, 黄俊

A Beginners’ Guide to Modelling of Electric Double Layer under Equilibrium, Nonequilibrium and AC Conditions

Lu-Lu Zhang, Chen-Kun Li, Jun Huang

Figure 10. (A) A simple RC electrical circuit; (B) The Nyquist plot; (C) The Bode plot of amplitude; (D) The Bode plot of phase angle. The parameters used for calculation are as follows, R0 = R = 1 Ω, C = 0.5 F, and the frequency range: 1 × 10-4 Hz to 1 × 104 Hz. Matlab script of this model is provided in the supporting information. (color on line)pedance amplitude and the frequency is shown in Figure 10(C). At very low frequencies, the amplitude of im-pedance is equal to R + R0. At very high frequencies, the amplitude of impedance approaches R0. Figure 10(D) shows how the phase angle varies with frequency. There is only a characteristic frequency at 1/RC which corresponds to the peak in the Nyquist plot. Notably, the peak frequency in the Bode plot deviates from 1/RC[57].