Abstract:Bromide(Br−) ionconductivity in the LaOBr-type solid was successfully improved by partial replacement of the La3+ sites in LaOBr with Zn2+ and Sr2+. By doping Zn2+ having small ionic radius and high electronegativity together with large size of Sr2+into the La3+ sites, high concentration of Br− vacancies were successfully introduced with prohibiting the lattice collapse, and the extraordinaryhighBr− ion conductivity was obtained for the La0.80Sr0.15Zn0.05OBr0.80 solid.
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