Abstract
The rotating ring‐disk electrode technique was used to detect the presence of soluble Pb(IV) species generated during the anodic charging of the lead dioxide electrode in . By potentiostatting a gold ring at 0.2V vs. while scanning the lead disk between 0.8 and 1.7V, it was possible to observe a small cathodic ring current corresponding to the anodic current waves on the disk, and attributable to the reduction of Pb(IV) to Pb(II). This paper presents evidence for the generation of soluble Pb(IV) as an unstable intermediate during the charging of the electrode. The effect of addition of small amounts of to the electrolyte is also illustrated.
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