Abstract
The anodic dissolution of vanadium in perchloric acid and hydrochloric acid has been studied using wire, rotating disc and ring-disc electrodes. The product of the reaction is V(IV). The rate of reaction is independent of the hydrogen ion concentration and the nature of the anion. The dissolution currents are also independent of the rotation speed of a disc electrode. The experimental data suggest that the rate-determining step is V → V(I)ads + e with an exchange current density at the V/V(IV) reversible potential of 8.0×10−11 mA cm−2.
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