The anodic oxidation of silver in sulfide solutions

Abstract

This work extends a previous study on the electrochemistry of silver electrodes in aqueous sulfide solutions.

It has been found that the voltammograms for the silver-sulfide system have additional features to those reported earlier. The nature and interpretation of the additional features is described. Peaks due to silver oxides, and chemically formed silver sulfide, are identified and discussed. Further evidence for the presence of α- and β-Ag₂S in the layer deposited during anodic oxidation of the silver was obtained from chronopotentiometric and diffraction studies.