The usual techniques being used for the EIS analysis is PEIS and GEIS. Is it like, one of them is Faradaic and the other is non-faradaic? or is it possible to do faradaic and non-faradiac EIS analysis using both experimental methods ??
1) Potentiostatic EIS measures the impedance by applying a sinusoidal voltage to the sample and measuring the current.
2) Galvanostatic EIS (GEIS) involves the application of an AC current and the measurement of the potential. It (GEIS) is commonly used in battery and fuel cell studies. GEIS is often recommended for corrosion samples with an unstable OCP. It (GEIS) is a perfectly valid technique for EIS, but it must be used carefully to obtain valid results. It is possible for the sample to encounter "high voltage levels" that threaten the integrity of the experiment.
Dear Vidyanand,
I think Faradaic Impedance is when you are doing the measurement with the application of some biased potential to trigger the Faradaic reaction and simultaneously measuring the Impedance.
Non-Faradaic Impedance is the measurement done without application of any biased potential or at OCV.
1) Potentiostatic EIS measures the impedance by applying a sinusoidal voltage to the sample and measuring the current.
2) Galvanostatic EIS (GEIS) involves the application of an AC current and the measurement of the potential. It (GEIS) is commonly used in battery and fuel cell studies. GEIS is often recommended for corrosion samples with an unstable OCP. It (GEIS) is a perfectly valid technique for EIS, but it must be used carefully to obtain valid results. It is possible for the sample to encounter "high voltage levels" that threaten the integrity of the experiment.
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