Overpotential in Electrochemistry Formulas

The Overpotential is the potential difference between a half-reaction’s thermodynamically determined reduction potential and the potential at which the redox event is experimentally observed. And is denoted by η. Overpotential is usually measured using the Volt for Electric Potential. Note that the value of Overpotential is always negative.

Formulas to find Overpotential in Electrochemistry

fxOverpotential for Anodic Reaction from Tafel EquationGo

fxOverpotential for Cathodic Reaction from Tafel EquationGo

Electrochemistry formulas that make use of Overpotential

fxTafel Slope for Anodic Reaction from Tafel EquationGo

fxTafel Slope for Cathodic Reaction from Tafel EquationGo

fxCurrent Density for Anodic Reaction from Tafel EquationGo

fxCurrent Density for Cathodic Reaction from Tafel EquationGo

fxExchange Current Density for Anodic Reaction from Tafel EquationGo

fxExchange Current Density for Cathodic Reaction from Tafel EquationGo

List of variables in Electrochemistry formulas

fx Tafel Slope Go

fx Electric Current Density Go

fx Exchange Current Density Go

FAQ

What is the Overpotential?

The Overpotential is the potential difference between a half-reaction’s thermodynamically determined reduction potential and the potential at which the redox event is experimentally observed. Overpotential is usually measured using the Volt for Electric Potential. Note that the value of Overpotential is always negative.

Can the Overpotential be negative?

Yes, the Overpotential, measured in Electric Potential can be negative.

What unit is used to measure Overpotential?

Overpotential is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Overpotential can be measured.

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