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Electrochemical oxidation of iron (II) ions on lead alloy anodes
Journal article   Open access   Peer reviewed

Electrochemical oxidation of iron (II) ions on lead alloy anodes

V. Tjandrawan and M.J. Nicol
Hydrometallurgy, Vol.131-132, pp.81-88
2013
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Abstract

The anodic oxidation of iron(II) ions on Pb-Ca-Sn anodes in sulphate solutions has been studied using cyclic voltammetry and potentiostatic methods. The oxidation of iron(II) on these anodes does not occur on a lead sulphate surface but occurs readily on a lead dioxide surface. The rate of the oxidation of iron(II) at the anodes is controlled by mass transport to the anode surface. Chemical reaction between iron(II) and PbO2 on the surface of the anodes is rapid. In the presence of manganese ions, oxidation of iron(II) also occurs on the surface of manganese oxides which can also rapidly oxidise iron(II). The presence of iron(II) in the electrolyte will increase the rate of "sulfation" of anodes during power disruptions in copper tankhouses. Limited experiments with a Pb-Ag anode showed very similar results.

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Citation topics
2 Chemistry
2.210 Corrosion & Deposition Chemistry
2.210.2222 Lead-Acid Battery
Web Of Science research areas
Metallurgy & Metallurgical Engineering
ESI research areas
Materials Science
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