Proton Transport in the Gadolinium-Doped Layered Perovskite BaLaInO 4 .

Materials capable for use in energy generation have been actively investigated recently. Thermoelectrics, photovoltaics and electronic/ionic conductors are considered as a part of the modern energy system. Layered perovskites have many attractions, as materials with high conductivity. Gadolinium-doped layered perovskite BaLaInO 4 was obtained and investigated for the first time. The high values of conductivity were proved. The composition BaLa 0.9 Gd 0.1 InO 4 demonstrates predominantly protonic transport under wet air and low temperatures (<400 °C). The doping by rare earth metals of layered perovskite is a prospective method for significantly improving conductivity.