EIS data, often presented as Nyquist or Bode plots, can reveal various electrochemical properties of a catalytic system. Key parameters that can be derived include:
Charge Transfer Resistance (Rct): Indicates the resistance to charge transfer at the catalyst interface, which is a measure of the catalytic activity. Double Layer Capacitance (Cdl): Reflects the capacity of the catalyst surface to store charge, providing insights into the surface area and morphology. Warburg Impedance: Related to the diffusion of reactants or products in the system, which can indicate mass transport limitations. Inductive Elements: Sometimes present in the spectra, pointing to specific reaction intermediates or adsorption phenomena.
