Kinetics of the electroreduction of Ag2CrO4 salt films electrodeposited on silver

V. BRUNETTI; H. M. VILLULLAS; M. LÓPEZ TEIJELO

Journal of the Argentine Chemical Society

Año: 2003 p. 97 - 106

0365-0375

The electroreduction of silver chromate films prepared by anodic polarization of polycrystalline silver in solutions containing chromate was studied. The potentiodynamic current-potential behavior as well as the potentiostatic current-time dependence is adequately described by using the layer-pore resistance model. The electroreduction of the Ag2CrO4 films occurs mainly under ohmic control. The properties of the Ag2CrO4 films are dependent on the formation conditions. A current contribution of reversible kinetic characteristics attributed to the reduction of a gel-like structure is also obtained.