Abstract:Solid proton and oxide ion conductors have key applications in several hydrogen-based and energy related technologies. Here we report on the discovery of significant proton and oxide ion conductivity in palmierite ox-ides A3V2O8 (A = Sr, Ba), which crystallize with a framework of isolated tetrahedral VO4 units. We show that these systems present prevalent ionic conduction, with a large protonic component under humidified air (tH = 0.6 – 0.8) and high protonic mobility. In particular, the proton conductivity of… Show more
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