Abstract
By means of earlier developed dynamic model of porous electrode, numerical analysis is given of the effect of the division into smaller parts of optimal volume V opt of metal-containing solution circulating through the porous electrode, which ensures both achieving of the metal preset recovery and the prescribed final porosity in the critical cross-section of the porous cathode, most strongly filled with the deposit. It is shown that the result depends significantly on the presence (or absence) of oxidant ions in the solution. In the absence of oxidant, the division of V opt is desirable; it entails some improving of the distribution uniformity and increase in the deposit eventual mass. On the contrary, in the presence of oxidant such a division brings about marked negative consequences: (1) the metal deposit stronger localization at the porous electrode front edge and (2) decrease in the deposit’s final mass. It was shown that these phenomena result from the formation of anodic zone in the porous electrode rear side in the initial stage of the processing of the second and subsequent portions of solution. This is promoted by low polarization in this part of the porous electrode and the presence of a soluble metal deposited here during the final stage of electrolysis of the solution preceding portion.
Similar content being viewed by others
References
Maslii, A.I., Bek, R.Yu., Makhnyr’, N.V., Ganin, V.M., and Sheshin, V.A., Tsvet. Metally, 1973, no. 8, p. 73.
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2005, vol. 41, p. 457 [Russ. J. Elektrochem. (Engl. Transl.), vol. 41, p. ].
Maslii, A.I., Vais, A.A., Panasenko, A.V., and Kuz’menko, L.A., Khimiya v Interesakh Ustoich. Razvitiya, 1997, vol. 5, no. 5, p. 339.
Maslii, A.I. and Vais, A.A., Gal’vanotekh. Obrab. Poverkhn., 1999, vol. 7, no. 1, p. 47.
RF Patent No. 2002, Byull. Izobret., no. 2.
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2005, vol. 41, p. 1335 [Russ. J. Elektrochem. (Engl. Transl.), vol. 41, p. 333].
Masliy, A.I, Poddubny, N.P, and Medvedev, A.Zh, in Metal Electrodeposition, Nunez, M., Ed., New York: Nova Science Publ., 2005, p. 99.
Maslii, A.I., Poddubnyi, N.P., and Medvedev, A.Zh., Elektrokhimiya, 2006, vol. 42, p. 899 [Russ. J. Elektrochem. (Engl. Transl.), vol. 42, p. 687].
Coeuret, F., J. Appl. Electrochem., 1980, vol. 10, no. 6, p. 687.
Van Zu, J. and Newman, J. // J. Electrochim. Soc., 1977, vol. 124, p. 706.
Belobaba, A.G., Maslii, A.I., Sukhorukov, D.V., and Li, Gan, Khimiya v Interesakh Ustoich. Razvitiya, 2007, vol. 15, no. 3, p. 317.
Bisang, J.M., J. Appl. Electrochem., 1996, vol. 26, no. 1, p. 135.
Varentsov, V.K. and Varentsova, V.I., Khimiya v Interesakh Ustoich. Razvitiya, 1997, vol. 4, no. 4, p. 181.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.I. Masliy, N.P. Poddubny, D.V. Sukhorukov, 2008, published in Elektrokhimiya, 2008, Vol. 44, No. 10, pp. 1177–1184.
Rights and permissions
About this article
Cite this article
Masliy, A.I., Poddubny, N.P. & Sukhorukov, D.V. Effect of solution volume on the rate of metal recovery and its distribution in porous cathode. Russ J Electrochem 44, 1092–1099 (2008). https://doi.org/10.1134/S1023193508100029
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1023193508100029