A Rapid Method for Determining the Complete Frequency-Dependent Electrode Impedance Response

Traditionally, capturing the low frequency response of electrodes involves having to capture the entire frequency range of impedance. The most critical impedance element of an electrode typically involves the low frequency response where the electrode polarization resistance is determined. Depending on the electrode and electrolyte, low frequency impedance measurements may take hours or longer to complete, which limits the utility of impedance monitoring of electrochemically active systems. In order to combat this problem, Clemson University researchers have developed a method that can significantly reduce the time of measurements from hours/days to minutes/seconds. This will make it easier to measure impedance of electrode systems in real-time, and will significantly extend the range of frequencies, over which the impedance can be determined, beyond the range measured.
Jeremy Gilbert
2019-021