Charge transfer coefficient

The charge transfer coefficient, often denoted by the symbol \( \alpha \) (alpha), is a parameter used in electrochemistry to describe the efficiency of the electron transfer process during an electrochemical reaction. It plays a crucial role in determining the kinetics of electrode reactions, particularly in the context of the Butler-Volmer equation, which describes the current density (current per unit area) at an electrode as a function of overpotential.