Transport Properties of Hydrogen Isotope Gas Mixture Through Ceramic Protonic Conductor

The blanket tritium recovery system using the hydrogen pump with solid electrolyte membrane has been proposed by the present authors. Perovskite-type ceramic such as SrCe_0.95Yb_0.05O_3-a, is one of the candidate protonic conductor for hydrogen pump and its ionic hydrogen transportation properties are being investigated. Deuterium transportation properties were investigated and were compared with H₂ to understand the isotope effect. The basic hydrogen isotope transportation property of SrCe_0.95Yb_0.05O_3-a, its technical feasibility, and issues for further development toward practical devices were revealed.