Formation process of perovskite-type hydride LiNiH3: In situ synchrotron radiation X-ray diffraction study

The formation process of perovskite-type hydride LiNiH3 was investigated using in situ synchrotron X-ray diffraction measurements. A mixture of LiH and Ni was hydrogenated at 873 K and 3 GPa, and the structural changes associated with hydrogenation were observed. Time-resolved diffraction profiles s...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2013-03, Vol.102 (9)
Main Authors: Sato, Ryutaro, Saitoh, Hiroyuki, Endo, Naruki, Takagi, Shigeyuki, Matsuo, Motoaki, Aoki, Katsutoshi, Orimo, Shin-ichi
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The formation process of perovskite-type hydride LiNiH3 was investigated using in situ synchrotron X-ray diffraction measurements. A mixture of LiH and Ni was hydrogenated at 873 K and 3 GPa, and the structural changes associated with hydrogenation were observed. Time-resolved diffraction profiles showed a three-step reaction: hydrogenation of Ni to NiHx, formation of LiyNi1–yH solid solution, and conversion to perovskite-type hydride LiNiH3. The solid solution, which has never been reported, plays the role of the precursor in the perovskite formation and its presence is apparently critical for synthesizing perovskite-type hydrides.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4794067