Isotopic effect of proton conductivity in gadolinium sesquioxide

Due to the higher hydrogen solubility and diffusivity, gadolinium sesquioxide (Gd2O3) could be expected as a proton conductive material. In this study, monoclinic Gd2O3 was used evaluate possible conductivity in Ar (?Ar), Ar+4% H2 (?H2), D2 (?D2), Ar+H2O (?H2O), Ar+D2O (?D2O), O2 (?O2) atmospheres temperature range from 500°C 1000°C, understand its application DT fuel system of nuclear fusion reactor. At all temperatures, ?D2 lower than that ?H2. Similarly, ?D2O always ?H2O. The isotope dependence appreciable at indicating is proton-conductive oxide elevated temperatures. However, much improvement required for use recovery, analysis, purification reactors.