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Current Density for Cathodic Reaction from Tafel Equation Formula

GoCurrent Density for Anodic Reaction from Tafel Equation Formula

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The Electric current density is the amount of charge per unit of time that flows through the unit area of a chosen cross-section. Check FAQs

i = (10^{\frac{η}{- A slope}}) \cdot i 0

i - Electric Current Density?η - Overpotential?A_slope - Tafel Slope?i₀ - Exchange Current Density?

Current Density for Cathodic Reaction from Tafel Equation Example

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Here is how the Current Density for Cathodic Reaction from Tafel Equation equation looks like with Values.

Here is how the Current Density for Cathodic Reaction from Tafel Equation equation looks like with Units.

Here is how the Current Density for Cathodic Reaction from Tafel Equation equation looks like.

0.0988 = (10^{\frac{0.03}{- 0.098}}) \cdot 0.2

0.0988A/m² = (10^{\frac{0.03V}{- 0.098V}}) \cdot 0.2A/m²

0.0988 = (10^{\frac{0.03}{- 0.098}}) \cdot 0.2

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Tafel Slope » fx Current Density for Cathodic Reaction from Tafel Equation

Current Density for Cathodic Reaction from Tafel Equation Solution

Follow our step by step solution on how to calculate Current Density for Cathodic Reaction from Tafel Equation?

FIRST Step Consider the formula

i = (10^{\frac{η}{- A slope}}) \cdot i 0

Next Step Substitute values of Variables

∴

i = (10^{\frac{0.03V}{- 0.098V}}) \cdot 0.2A/m²

Next Step Prepare to Evaluate

∴

i = (10^{\frac{0.03}{- 0.098}}) \cdot 0.2

Next Step Evaluate

∴

i = 0.0988342672264767A/m²

LAST Step Rounding Answer

∴

i = 0.0988A/m²

Current Density for Cathodic Reaction from Tafel Equation Formula Elements

Variables

Electric Current Density

The Electric current density is the amount of charge per unit of time that flows through the unit area of a chosen cross-section.

Symbol: i

Measurement: Surface Current DensityUnit: A/m²

Note: Value can be positive or negative.

Formulas to find Electric Current Density

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.

Symbol: η

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Overpotential

Tafel Slope

The Tafel Slope describes how the electrical current through an electrode depends on the voltage difference between the electrode and the bulk electrolyte. The Tafel slope is measured experimentally.

Symbol: A_slope

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Tafel Slope

Exchange Current Density

The Exchange Current Density is defined as the current in the absence of net electrolysis and at zero overpotential.

Symbol: i₀

Measurement: Surface Current DensityUnit: A/m²

Note: Value can be positive or negative.

Formulas to find Exchange Current Density

Other Formulas to find Electric Current Density

Go Current Density for Anodic Reaction from Tafel Equation

i = (10^{\frac{η}{A slope}}) \cdot i 0

Other formulas in Tafel Slope category

Go Overpotential for Anodic Reaction from Tafel Equation

η = + (A slope) \cdot (\log 10 (\frac{i}{i 0}))

Go Overpotential for Cathodic Reaction from Tafel Equation

η = - (A slope) \cdot (\log 10 (\frac{i}{i 0}))

Go Tafel Slope for Anodic Reaction from Tafel Equation

A slope = + \frac{η}{\log 10 (\frac{i}{i 0})}

Go Tafel Slope for Cathodic Reaction from Tafel Equation

A slope = - \frac{η}{\log 10 (\frac{i}{i 0})}

How to Evaluate Current Density for Cathodic Reaction from Tafel Equation?

Current Density for Cathodic Reaction from Tafel Equation evaluator uses Electric Current Density = (10^(Overpotential/-Tafel Slope))*Exchange Current Density to evaluate the Electric Current Density, The Current density for cathodic reaction from Tafel equation formula is defined as the product of antilog of overpotential per negative tafel slope to the exchange current density. Electric Current Density is denoted by i symbol.

How to evaluate Current Density for Cathodic Reaction from Tafel Equation using this online evaluator? To use this online evaluator for Current Density for Cathodic Reaction from Tafel Equation, enter Overpotential (η), Tafel Slope (A_slope) & Exchange Current Density (i₀) and hit the calculate button.

FAQs on Current Density for Cathodic Reaction from Tafel Equation

What is the formula to find Current Density for Cathodic Reaction from Tafel Equation?

The formula of Current Density for Cathodic Reaction from Tafel Equation is expressed as Electric Current Density = (10^(Overpotential/-Tafel Slope))*Exchange Current Density. Here is an example- 0.098834 = (10^(0.03/-0.098))*0.2.

How to calculate Current Density for Cathodic Reaction from Tafel Equation?

With Overpotential (η), Tafel Slope (A_slope) & Exchange Current Density (i₀) we can find Current Density for Cathodic Reaction from Tafel Equation using the formula - Electric Current Density = (10^(Overpotential/-Tafel Slope))*Exchange Current Density.

What are the other ways to Calculate Electric Current Density?

Here are the different ways to Calculate Electric Current Density-

Electric Current Density=(10^(Overpotential/Tafel Slope))*Exchange Current Density

Can the Current Density for Cathodic Reaction from Tafel Equation be negative?

Yes, the Current Density for Cathodic Reaction from Tafel Equation, measured in Surface Current Density can be negative.

Which unit is used to measure Current Density for Cathodic Reaction from Tafel Equation?

Current Density for Cathodic Reaction from Tafel Equation is usually measured using the Ampere per Square Meter[A/m²] for Surface Current Density. Ampere per Square Centimeter[A/m²], Ampere per Square Inch[A/m²], Ampere per Circular Mil[A/m²] are the few other units in which Current Density for Cathodic Reaction from Tafel Equation can be measured.

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Current Density for Cathodic Reaction from Tafel Equation Formula

​GoCurrent Density for Anodic Reaction from Tafel Equation Formula

Current Density for Cathodic Reaction from Tafel Equation Example

Current Density for Cathodic Reaction from Tafel Equation Solution

Current Density for Cathodic Reaction from Tafel Equation Formula Elements

Other Formulas to find Electric Current Density

Other formulas in Tafel Slope category

How to Evaluate Current Density for Cathodic Reaction from Tafel Equation?

FAQs on Current Density for Cathodic Reaction from Tafel Equation

Variable Name

GoCurrent Density for Anodic Reaction from Tafel Equation Formula