Definition - What does Electrochemical Admittance mean?
Electrochemical admittance is the reciprocal of electrochemical impedance (I/E), which is a measure of the ability of a circuit to resist the flow of electrical current (E/I). Electrochemical impedance is similar to resistance in electric circuits.
Electrochemical admittance is useful in determining corrosion currents.
Corrosionpedia explains Electrochemical Admittance
Electrochemical admittance is related to electrochemical parameters and can be used to obtain information about:
- Electrode kinetics
- Corrosion currents
Electrochemical admittance is represented by the following equation:
Thus, corrosion currents can be calculated by measuring the admittance (ΔI/ΔE) from the above equation.
Measurement of electrochemical impedance is now favored over electrochemical admittance.