Abstract
Using an extended dynamic model of liquid flow-through porous electrode (PE), the effect of kinetics of deposition of individual components and conditions of potentiostatic electrolysis on the dynamics and final parameters (the cathodic deposit weight, the ratio between the amounts of components, and the spatial distribution of components) of codeposition of two metals M1 and M2 is studied. An equipotential PE operating in the direct-flow mode in the absence of anodic dissolution of electronegative component M2 is considered. The effects of concentration, exchange currents, a difference between the equilibrium potentials M1 and M2, a prescribed voltage on PE, and solution flow velocity and direction are analyzed. It is shown that, for this version of codeposition of metals, the rates of M1 and M2 deposition averaged over the PE width are constant in time. However, this does not mean that their local deposition rates are constant. The general tendency is that the metal deposition rate on the rear part of PE decreases with the time, whereas the deposition rate on the frontal zone of PE, which is closer to the anode, increases. As a result, the final profiles for M1 and M2, which are calculated for equal deposition times taking into account and ignoring the redistribution of current during the deposition, differ essentially.
Similar content being viewed by others
References
Mineev, G.G. and Panchenko, A.F., Rastvoriteli zolota i serebra v gidrometallurgii (Solvents of Gold and Silver in Hydrometallurgy), Moscow: Metallurgiya, 1994.
Bek, R.Yu., Vozdeistvie gal’vanicheskikh proizvodstv na okruzhayushchuyu sredu i sposoby snizheniya nanosimogo ushcherba (An Adverse Effect of Plating Industry on the Environment and Methods of Reducing It), Novosibirsk: GPNTB SO RAN, 1991.
Stefanyuk, S.L., Itogi Nauki Tekh., Ser.: Metall. Tsvetn. Met., Moscow: VINITI, 1988, vol. 18, p. 68.
Brandon, N.P., Kelsall, G.H., Muller, T., Olijve, R., Schmidt, M., and Yin, Q., in Energy and Electrochemical Processes for a Cleaner Environment. The Electrochemical Society Proceedings Series, Pennington, N.J., 2001, vol. 2001-23, p. 323.
Alkire, R.C. and Gould, R.M., J. Electrochem. Soc., 1976, vol. 123, no. 12, p. 1842.
Koshev, A.N., Varentsov, V.K., and Kamburg, V.G., Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim., 1984, vol. 17, no. 6, p. 24.
Pilone, D. and Kelsall, G.H., J. Electrochem. Soc., 2006, vol. 153, no. 5, p. D85.
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2005, vol. 41, p. 333 [Russ. J. Electrochem. (Engl. Transl.), vol. 41, p. 294].
Masliy, A.I., Poddubny, N.P., Medvedev, A.Zh., Zherebilov, A.F., and Sukhorukov, D.V., J. Electroanal. Chem., 2008, vol. 623, no. 2, p. 155.
Maslii, A.I., Medvedev, A.Zh., and Poddubnyi, N.P., Elektrokhimiya, 2005, vol. 41, p. 1335 [Russ. J. Electrochem. (Engl. Transl.), vol. 41, no. 11, p. 1191].
Medvedev, A.Zh., Zherebilov, A.F., Maslii, A.I., and Poddubnyi, N.P., Elektrokhimiya, 2008, vol. 44, p. 818 [Russ. J. Electrochem. (Engl. Transl.), vol. 44, no. 11, p. 761].
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2006, vol. 42, p. 899 [Russ. J. Electrochem. (Engl. Transl.), vol. 42, p. 807].
Masliy, A.I. and Poddubny, N., P, J. Appl. Electrochem., 1997, vol. 27, p. 1045.
Maslii, A.I. and Poddubnyi, N.P., Elektrokhimiya, 1997, vol. 33, p. 919 [Russ. J. Electrochem. (Engl. Transl.), vol. 33, p. 834].
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2006, vol. 42, p. 286 [Russ. J. Electrochem. (Engl. Transl.), vol. 42, p. 245]
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.I. Maslii, N.P. Poddubnyi, A.Zh. Medvedev, 2010, published in Elektrokhimiya, 2010, Vol. 46, No. 4, pp. 433–443.
Rights and permissions
About this article
Cite this article
Maslii, A.I., Poddubnyi, N.P. & Medvedev, A.Z. Dynamics of codeposition of metals inside porous electrode operating in direct-flow mode. Russ J Electrochem 46, 411–421 (2010). https://doi.org/10.1134/S1023193510040063
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1023193510040063