Variations of cell resistance and current distribution with current feeder configurations

Two models of current feeder configurations for resistive electrodes are presented, one in which the feeders were connected at the same end of a pair of electrodes of a unit cell and one in which connection was made at opposite ends. Expressions for the cell resistance and the current distribution were derived for these two current feeder configurations on the assumption of a linear type of overpotential. The cell resistance in the ‘opposite ends’ configuration was larger than that for the ‘same ends’ arrangement. Conversely, the current distribution in the former was more uniform than that in the latter. The relation between the total cell resistance and the number of current feeders,n, was obtained. An increase inn led to a decrease in the resistive loss of the electrodes by an amount corresponding to 1/n ², irrespective of current feeder configuration, when the resistance of the electrode was not so great as that of the solution.