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Butler-Volta Equation

Describes the rate of electrochemical reactions at an interface, considering current density, concentration, and temperature. \(i = i_{0}(1 - \exp{\frac{-mF(R-T)}{nTA}})

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The statement of the theorem

Let

i

be the net current density,

i_0

be the exchange current density,

\eta

be the overpotential,

n

be the number of electrons,

F

be the Faraday constant,

R

be the gas constant, and

T

be the absolute temperature. The current density is described by:\n

i = i_{0} \frac{nF}{RT} \left( \exp\left(\frac{nF\eta}{RT}\right) - \exp\left(-\frac{nF\eta}{RT}\right) \right)

Source: Wikipedia