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Research Article
ScienceAsia 30 (2004): 375-381 |doi: 10.2306/scienceasia1513-1874.2004.30.375
Experimental investigation of the current distribution in
Mohler cell and Rotating Cylinder Hull cell
Manida Teeratananon,a Kejvalee Pruksathorn,a Somsak Damronglerd,a* Franck Dupuy,b Hugues Vergnes,b Bernard Fenouilletc and Patrick Duverneuilc
ABSTRACT: Two electroplating test cells have been proposed and tested to analyze the performance of plating
solutions by studying the reaction distribution on the cathode during deposition of copper electrolyte. The
first one is a modified Mohler cell composed of a rectangular electrolytic cell with forced electrolyte flow and
two flat electrodes (an insulating separator is inserted between the cathode and anode). This screen modifies
the electric field distribution, and leads to a non-uniform current distribution or deposit thickness on the
cathode panel. The other is a rotating cylinder Hull cell consisting of an inner rotating cylinder electrode
coaxial with a stationary outer insulating tube to produce a non-uniform current distribution along the
length of a cylinder cathode. These kinds of cells are developed to overcome the absence of a controlled mass
transport condition associated with the tradition Hull cell. From the experimental results, it appears that the
rotating cylinder Hull cell is a better device to characterize and control electrolytic bath, while the experimental
errors of the continuous Mohler cell were accounted for using simulation.
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a Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
b Institut National Polytechnique de Toulouse, 6 Allee Emile Monso 31029 Toulouse Cedex 4, France.
c Ecole Nationale Superieure des Ingenieurs en Arts Chimiques et Technologiques, 118, route de Narbonne 31077 Toulouse Cedex 4, France.
* Corresponding author, E-mail: dsomsak@sc.chula.ac.th
Received 26 Nov 2003,
Accepted 31 Aug 2004
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