# Electrochemical Admittance

## 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
- Electro-sorption

Electrochemical admittance is represented by the following equation:

Thus, corrosion currents can be calculated by measuring the admittance (?I/?E) from the above equation.

Measurement of electrochemical impedance is now favored over electrochemical admittance.