摘要
A study was carried out on kinetics of oxygen evolution on lead alloy anodes in sulphuric acidicelectrolyte. The influence of alloy elements Ca, Ag and Sn on the overpotential of oxygen evolution was investigated. All anodes had been subjected to a pre-polarization before the measurement of potential-currentcurves for oxygen evolution. The overpotential of oxygen evolution was found to be decreased when the alloyanode contained Ca and Ag, whereas it remained unchanged when the alloy anode contained Sn. For oxygenevolution on lead alloy anodes the TAFEL equation was valid. The b vulue for Ph and Ph-Ca anodes was approx. 100, for Ph-Ag, Ph-Ag-Ca anodes it was approx. 140. The a value for Ph Ca, Ph-Ag, Ph-Ag-Ca anodes decreased with the increase of Ca or/and Ag content. The a and b value was not influenced by Sn in theanodes.
A study was carried out on kinetics of oxygen evolution on lead alloy anodes in sulphuric acidicelectrolyte. The influence of alloy elements Ca, Ag and Sn on the overpotential of oxygen evolution was investigated. All anodes had been subjected to a pre-polarization before the measurement of potential-currentcurves for oxygen evolution. The overpotential of oxygen evolution was found to be decreased when the alloyanode contained Ca and Ag, whereas it remained unchanged when the alloy anode contained Sn. For oxygenevolution on lead alloy anodes the TAFEL equation was valid. The b vulue for Ph and Ph-Ca anodes was approx. 100, for Ph-Ag, Ph-Ag-Ca anodes it was approx. 140. The a value for Ph Ca, Ph-Ag, Ph-Ag-Ca anodes decreased with the increase of Ca or/and Ag content. The a and b value was not influenced by Sn in theanodes.
