Electrochemical Impedance Spectroscopy EIS and AC Voltammetry 2024
Electrochemical Impedance Spectroscopy (EIS) Electrochemical impedance spectroscopy (EIS) is a robust method for examining how AC impedance varies with frequency in an electrochemical system that’s in a polarization steady state, usually at equilibrium potential. This technique offers crucial insights into electrochemical processes like charge transfer resistance, electrolyte resistance, and double-layer capacitance within the system. During EIS testing, several challenges may emerge, necessitating appropriate solutions: 1. **Electrode Polarization**: Electrode polarization can notably impact EIS measurements. It can stem from various factors, such as electrolyte resistance, charge transfer resistance, and double-layer capacitance. To counteract this, applying proper calibration methods, like subtracting the electrode polarization contribution from the impedance data, is
