relative electrode potential

Relative electrode potential, also known as reduction potential, is a measure of a chemical species' tendency to gain or lose electrons. This is quantified in volts and is measured against a standard reference, typically the hydrogen electrode, which is assigned a potential of zero.1

In an electrochemical cell, electrochemical reactions occur at the interface between an electrode (an electron conductor) and an electrolyte (an ionic conductor). The Nernst equation relates the electrode potential to the concentrations of the reacting species and the standard electrode potential, which is characteristic of a specific redox couple. A negative value for the potential indicates that a chemical reaction will proceed spontaneously. This concept is fundamental to understanding electrochemical reactions and is utilized in various electroanalytical methods.2314