Oxygen chemisorption by SnO2-based oxide electrodes in solid electrolytes

Processes of oxygen adsorption and desorption were studied on surfaces of tin dioxide, solid solutions of SnO2 with vanadium oxide, and at the SnO2-V2O5/Na5GdSi4O12 interface. Uncharged molecular, ionized molecular, and ionized atomic forms of chemisorbed oxygen were found to be formed on the oxide semiconductor surface. The parameters of formation and decomposition of these forms were calculated, and their dependence on dopant concentration determined. It was found that ionized atomic oxygen is not desorbed from the surface of the semiconducting oxides in contact with the solid electrolyte but becomes part of the solid electrolyte