A modification of the tracer technique of Ettel has been developed for determining mass-transfer coefficients in electrolytes for both electrowinning and electrorefining systems. The method involves the direct measurement of the limiting current density of a more noble tracer ion at low concentration by cyclic voltammetry techniques in an electrolyte of choice. A Ag+tracer in acid copper sulfate is used as the example. Additional tests were made by code positing the tracer with copper to compare the results of the two methods. The effect of copper ion concentration and temperature on the electrochemical and transport properties of the solution were determined. The results obtained using cyclic voltammetry techniques were found to be in good agreement with those from the standard code position determinations. Additional refinement of the technique is needed to more clearly define the limitations of the technique when used for metal deposition evaluations. © 1987, The Electrochemical Society, Inc. All rights reserved.
T. J. O'Keefe et al., "Calculation Of Mass Transfer Coefficients In Metal Deposition Using Electrochemical Tracer Techniques," Journal of the Electrochemical Society, vol. 134, no. 3, pp. 547 - 551, The Electrochemical Society, Jan 1987.
The definitive version is available at https://doi.org/10.1149/1.2100507
Materials Science and Engineering
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01 Jan 1987