PVF redox cycling

Visualizing Ion and solvent transfer processes in electroactive polymer films Ch. 13 

The shape of the current-voltage curve for the first reduction half cycle depends on the time scale imposed on the system by the scan rate used in the cyclic voltammogram. We have not experimentally explored the scan 

This in turn would undergo oxidation to Osb when the potential scan was reversed. Subsequent cyclic voltammograms would then involve a path confined to the lower cube. 

If progressively slower sweep rates are used, the first reduction cycle will follow the path illustrated in Fig. 13.18. Now, the system has time to explore parts of the upper (as well as lower) cubes, although the original unsolvated states (back face of the upper cube) are never accessed, consistent with the data of Fig. 13.9 and numerous similar experiments. 

The formal potential for the first oxidation process, Ra to Oa, differs from that of the second, Rf to Of, and subsequent ones, Rl to Of, Rl to Of, Ra to Of [43], which explains why the peak potential seen in Fig. 1 of reference [37] changes between the first and subsequent cycles. 

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