1070-4272/02/7507-1079$27.00C2002 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 75, No. 7, 2002, pp. 1079!1081. Translated from Zhurnal Prikladnoi Khimii, Vol. 75, No. 7,
2002, pp. 1096!1098.
Original Russian Text Copyright C 2002 by Ivanova, Gerasimchuk, Vlasenko.
AND CORROSION PROTECTION OF METALS
Kinetics of Copper(II) Electrodeposition from Dilute
Electrolytes with a Bipolar Electrode
N. D. Ivanova, A. I. Gerasimchuk, and N. E. Vlasenko
Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of the Ukraine,
Received December 11, 2001
Abstract-Results obtained in electrodeposition of copper(II) from sulfate solutions with a bipolar electrode
The principle of operation of the bipolar electrode
and its industrial applications are known , but this
electrode remains unconventional and its possibilities
are far from being exhausted.
Noteworthy is the fact that the bipolar electrode
allows very high current densities, occasionally ex-
ceeding by a factor of several tens those on monopolar
electrodes . The kinetics of the electrochemical
process on the bipolar electrode has not been studied
at all, and, therefore, the aim of this study is to
analyze the mass transfer and its components.
The main distinction of the bipolar electrode from
the monopolar one is that current is not fed directly to
this electrode, being supplied to auxiliary electrodes
Fig. 1. Schematic arrangement of electrodes and their electrical equivalents. Electrode: (a) monopolar and (b) bipolar.
In studying the mass transfer, we measured sta-
tionary polarization curves (by points) with and with-
out a supporting electrolyte (1 M Na
The experimental error did not exceed 3%. As objects
of study served dilute solutions which modeled wash-
ing water from the copper plating process. The con-
centration of copper ions was varied between 0.003
and 0.015 M. To our knowledge, the bipolar electrode
has not been used in such cases previously, and, there-
fore, the investigations performed expand its applica-
Figure 2a presents typical stationary polarization
curves for electrodeposition of copper. On introducing
a supporting electrolyte, the curves virtually coincide
in the limiting current range for monopolar and bi-