In electrochemistry, the Butler–Volmer equation (named after John Alfred Valentine Butler [1] and Max Volmer), also known as Erdey-Grúz –Volmer equation, is one of the most fundamental relationships in electrochemical kinetics.

3.4 THE BUTLER-VOLMER MODEL For the cathodic branch at high ηvalues, the anodic contribution is insignificant, useful for obtaining kinetic parameters for systems in which the normal Tafelplots are complicated by mass-transfer effects

2020年9月1日 · Presentation of common forms of the Butler-Volmer equation, specifying equivalences, differences, and interconversions. Review of what different forms of the Butler-Volmer equation are used in various electrochemical applications, and why.

Typical Tafel plot of log(current) versus overpotential. The Butler-Volmer equation predicts a asymptotic linear dependence for large overpotentials, where the slope is related to the transfer coefficient and the y-intercept gives the exchange current.

3 The Butler-Volmer model results from the assumption that the chemical potential of the transition state is split between the initial and final states, together with an extra ‘chemical energy’ at the transition state such that .

2023年2月3日 · The Butler-Volmer equation is a fundamental equation in electrochemistry that plays a crucial role in modeling and understanding electrode processes. In this blog post, we’ll explore the basics of electrochemistry, the derivation and explanation of the Butler-Volmer equation, the importance of charge transfer reactions, and its applications ...

The Butler-Volmer equation is the general equation of electrochemical kinetics that approximates the real current density-overpotential relation for every case that arises depending on the values of the parameters involved.

First we discuss two limiting cases for membrane-electrode assembly with Frumkin-Butler-Volmer kinetics and stern boundary conditions. diffuse charge effect. For example, if symmetry factor is taken to be 1/2, and assume only one active cation participate in the reaction (n=1), then voltage can be expressed as.

Butler-Volmer equation is one of the most important equations in the electrochemical science and engineering and is the fundamental equation of electrode kinetics that describes the exponential relationship between the current density and the electrode potential.

2020年9月1日 · Presentation of common forms of the Butler-Volmer equation, specifying equivalences, differences, and interconversions. Review of what different forms of the Butler-Volmer equation are used in various electrochemical applications, and why.