Electrode potential of working electrode relative to the reference electrode when no potential or electric current is being applied to the
electrochemical cell.
Note: In the case of a reversible electrode system, the OCP is also referred to as the
equilibrium electrode potential. Otherwise, it is called the rest potential, or the corrosion potential, depending on the system being studied.
Source:
PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 653 (https://doi.org/10.1515/pac-2018-0109)