Rotating disk electrode theoretical treatments

Theoretical treatment of polarographic curves for the calculation of values of jo has been described [65Hey, 66Hey], for an overview see [94Gal], a further evaluation procedure has been described [6801d]. Experimental details, in particular of solid electrodes in combination with a rotating disk electrode have been reported elsewhere [84Guy]. (Data obtained with this method are labelled PP.)... 

To carry out theoretical studies of oxidation-reduction reactions, it is often of interest to know how kf. in Equation 2.5-6 is affected by the hydrodynamics of the system. A common method for obtaining a rigorous description of the hydrodynamic flow of stirred solution is based on measurements made with a rotating disk electrode (RDE). such as the one illustrated in Figure 25-21a and b. When Ihe disk electrode is rotated rapidly, the flow pattern shown by the arrows in the figure is set up. At the surface of the disk, the liquid moves out horizontally from the center of the de-% icc, which produces an upward axial flow to replenish Ihe displaced liquid. A rigorous treatment of the hydrodynamics is possible in this case and leads to the I.evich equation ... 

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