Author: Wein O.
Publisher: MAIK Nauka/Interperiodica
ISSN: 1023-1935
Source: Russian Journal of Electrochemistry, Vol.48, Iss.7, 2012-07, pp. : 704-711
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Abstract
The limiting-current technique, employed e.g. in electrodiffusion flow diagnostics, is based on an oversimplified electrochemical concept, which accounts only for the convective transport of depolarizers across a diffusion layer with constant bulk and wall concentrations. However, there are additional transport resistances that cannot be neglected: Faradaic resistance at surface of working electrode, and Ohmic losses in the bulk of electrolyte solution. Effect of these additional resistances is analyzed using the Nernst model of a two-electrode cell (no reference electrode). The Faradaic resistances due to electrode kinetics are considered for a single redox couple O +
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