1:45 PM - 2:00 PM
[13p-D411-1] [Young Scientist Presentation Award Speech] Fast H− conduction and diffusion mechanism in lanthanum oxyhydride LaH3−2xOx
Keywords:ionic conduction, hydride ion, oxyhydride
H− conduction in lanthanum oxyhydride was investigated. Lanthanum oxyhydride (LaH3−2xOx) with x = 0.25 shows high H− conductivity of 2.6 × 10−2 S cm−1 at 340°C. In molecular dynamics simulations, characteristic phenomenon that is a cooperative migration of H− is observed. This indicates that H− conduction in lanthanum oxyhydride originates from the interstitialcy diffusion.