Electrode cells edge correction

Figures 10.1 and 10.2 illustrate the problem. An electrode-supported cell with a reference electrode is often sketched as shown in Figure 10.1a. However, such a sketch is very deceiving when it is used for an assessment of the current distribution. For this purpose, the sketch should be drawn to scale, i.e. the electrolyte thickness should be the relevant unit of length. When the correct length scale is used, as in Figure 10.1b, it is evident that the gap between the upper working electrode and the reference electrode is huge. This means that the current distribution around the right-hand edge of the working electrode becomes very different from the even current distribution in the main part of the cell. Furthermore, the current in the vicinity of the reference electrode becomes...

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