Figure 6.

Comparison of electrochemical properties of anhydrous (violet curves) and hydrous (blue curves) RuO₂ tested with the use of electrochemical impedance spectroscopy in the frequency range of 100 kHz and 0.01 Hz with an amplitude of 0.01 V and set potential value of 0.15 V in 0.01 M KCl as electrolyte, (a) electrochemical impedance spectroscopy (EIS) curves of both tested layers, inset: closer look at hydrous RuO₂, (b) real part of capacitance (C’) change vs. frequency, (c) imaginary part of capacitance (C”) change vs. frequency.