Diffusional Dynamics of Hydride Ions in the Layered Oxyhydride SrVO₂H.

ABSTRACT: Perovskite-type oxyhydrides are hydride-ion-conducting materials of promise for several types of technological applications; however, the conductivity is often too low for practical use and, on a fundamental level, the mechanism of hydride-ion diffusion remains unclear. Here, we, with the use of neutron scattering techniques, investigate the diffusional dynamics of hydride ions in the layered perovskite-type oxyhydride SrVO₂H. By monitoring the intensity of the elastically scattered neutrons upon heating the sample from 100 to 430 K, we establish an onset temperature for diffusional hydride-ion dynamics at about 250 K. Above this temperature, the hydride ions are shown to exhibit two-dimensional diffusion restricted to the hydride-ion sublattice of SrVO₂H and that occ

SUBMITTER: Laven R 

PROVIDER: S-EPMC8154327 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature