IUPAC - diffusion layer thickness (D01726)

diffusion layer thickness

https://doi.org/10.1351/goldbook.D01726

Defined by the equation:

δ = \frac{D}{k_{d}} = \frac{n F D c A}{l_{i}}

where

D

is the diffusion coefficient,

k_{d}

is the heterogeneous diffusion rate constant,

F

is the Faraday constant,

c

is the concentration,

A

is the geometric area of the electrode,

l_{i}

is the limiting current and

n

is the charge number of the cell reaction.

Source:
PAC, 1974, 37, 499. (Electrochemical nomenclature) on page 513 [Terms] [Paper]

Citation: 'diffusion layer thickness' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.D01726 RIS BibTex EndNote

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Last revised: February 24, 2014

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diffusion layer thickness