Synthesis and H- conductivity of a new oxyhydride Ba2YHO3 with anion-ordered rock-salt layers.
Haq NawazFumikata TakeiriAkihide KuwabaraMasao YonemuraGenki KobayashiPublished in: Chemical communications (Cambridge, England) (2020)
A new layered perovskite oxyhydride Ba2YHO3 was synthesized via high pressure synthesis. Powder X-ray and neutron diffraction experiments revealed that in Ba2YHO3 the ordered H- and O2- anions form [Ba2H2] rock-salt layers wherein H- conduction is allowed. The conductivity reached 0.1 mS cm-1 at 350 °C, which is higher than that of isostructural Ba2ScHO3 with anion-disordered [Ba2HO] layers.