Electrode reaction of silver on a silver bromide crystal

The electrode reactions of silver on a silver bromide single crystal were observed employing a current step method with a small amount of electricity passed. Special attention was paid to the preparation of the electrode contact. From the overvoltage change, the kinetic parameters, i_O, Fv and a_O were obtained in the temperature range 300-400°C. It is concluded that the reactions proceed with two steps, the one is a formation of interfacial silver ions, through a charge transfer process and the other the incorporation of the formed ion into the electrolyte crystal, which is a specific character for the solid electrolyte system. In this system, the iterfacial silver ion seems to be incorporated through a vacant site of lattice with an accompanying surface diffusion.