What is the best source to learn EIS procedure and associated analysis of results to compare different tested samples subjected to different experimental conditions? Would be great help if explained in rather simple language. Thank you.
In addition to Artur's comments,
While the i–V curve provides general quantification of fuel cell performance, a more sophisticated test is required to accurately differentiate between all the major sources of losses of constituent parts (electrodes,electrolyte) in a fuel cell.
Like resistance, impedance is a measure of the ability of a system to impede the flow of electrical current. Unlike resistance, impedance can deal with time- or frequency-dependent phenomena. Impedance measurements are made at hundreds of different frequencies. EIS plots generally summarize the impedance behavior of a system over many orders of magnitude in frequency. In normal EIS practice, a 1–20-mV alternating current (AC) signal is applied to the cell. This signal is generally small enough to confine us to a pseudolinear segment of the cell’s i–V curve.
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