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A note on electrolysis with forced convection at large peclet number in a channel and an excess of supporting electrolyte
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Processteknisk strömningsmekanik.
2008 (engelsk)Inngår i: Russian journal of electrochemistry, ISSN 1023-1935, E-ISSN 1608-3342, Vol. 44, nr 4, s. 470-478Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Electrolysis of an aqueous solution of a metal salt with an excess of supporting electrolyte flowing in a two-dimensional channel is considered. The reaction kinetics is modeled by a Butler - Volmer law. The metal electrodes are symmetrically flush mounted in the channel walls, which are otherwise electrically insulating. Using the perturbation scheme originally proposed by Levich for electrolytes with an excess of supporting electrolyte, a solution in closed form, involving the root of a transcendental algebraic equation, is obtained for the polarization curve. For small and large values of the potential difference between the electrodes, explicit expressions for the polarization curve and the distributions of electric current and concentration on the electrodes are obtained. Particular attention is given to the conditions prevailing during the asymptotic approach to the limiting current.

sted, utgiver, år, opplag, sider
2008. Vol. 44, nr 4, s. 470-478
Emneord [en]
electrolysis, excess of supporting electrolyte, forced convection, polarization curve, analytic solution, plane
Identifikatorer
URN: urn:nbn:se:kth:diva-17549DOI: 10.1134/s1023193508040137ISI: 000256087400013Scopus ID: 2-s2.0-44249108330OAI: oai:DiVA.org:kth-17549DiVA, id: diva2:335593
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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