IUPAC > Gold Book > alphabetical index > H > heterogeneous diffusion rate constant in electrochemistry


heterogeneous diffusion rate constant

in electrochemistry
Defined by the equation:
k d = I l n F c A
where the limiting current I l is assumed to be due to the diffusion species of concentration c and of diffusion coefficient D. n is the charge number of the cell reaction written so that the stoichiometric coefficient of this species is unity. A is usually taken as the geometric area of the electrode, and F is the Faraday constant.
PAC, 1974, 37, 499 (Electrochemical nomenclature) on page 513
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.H02805.
Original PDF version: http://www.iupac.org/goldbook/H02805.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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