The Anodic Surface Oxidation of Gold
- 1 January 1961
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 108 (8) , 726-731
- https://doi.org/10.1149/1.2428206
Abstract
The surface oxidation of a smooth gold electrode in perchloric acid was studied by constant potential anodization and constant current cathodization under various conditions. The anodic reaction is explained as a mixed process of oxygen evolution and the formation of chemisorbed oxygen atoms which are presumed to take the configuration of auric oxide when more than one layer thick. The grain boundary diffusion of oxygen atoms may account for the residual current and the increase in the extent of oxidation at constant potential. Electron micrographs and double layer capacities are consistent with the other findings.Keywords
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