Journal of Electroanalytical Chemistry 379 (1994) 43-47

Effects of electromigration on polarization curves for parallel electrode reactions in the absence of supporting electrolyte

Yurij I. Kharkats a, Artjom V. Sokirko b,*, Fritz H. Bark b

a A.N. Frumkin Institute of Electrochemistry, Russian Academy of Sciences, 117071 Moscow, Russian Federation

b Department of Mechanics, Royal Institute of Technology, 10044 Stockholm, Sweden.

(Received 20 December 1993: in revised form 23 March 1994)

Abstract

Polarization curves are analyzed for two different types of parallel electrochemical reactions, with no supporting electrolyte in the solution. The consideration of the problem is based on an analytic solution in parametric form of Nernst-Planck equations for electrodiffusion with boundary conditions of the Butler-Volmer type. It is found that the current-voltage curves for such systems clearly display the interaction of ionic components due to migration current exaltation phenomena.

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