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- What does Warburg impedance represent?
- What is Warburg impedance in EIS?
- What is Nyquist plot in impedance?
What does Warburg impedance represent?
The simplest and most common circuit element for modelling diffusion behaviour is the Warburg impedance, which models semi-infinite linear diffusion – that is, diffusion in one dimension which is only bounded by a large planar electrode on one side.
What is Warburg impedance in EIS?
The Warburg coefficients σ include the concentration of the active material (CO, CR), the diffusion coefficient (DO, DR) and the number of mobile electrons n, as shown in equation (2), which together with the angular frequency ω (replaced by the frequency f) determine the magnitude of the impedance.
What is Nyquist plot in impedance?
Electrochemical impedance spectroscopy (EIS) consists of plotting so-called Nyquist plots representing negative of the imaginary versus the real parts of the complex impedance of individual electrodes or electrochemical cells.
