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

Ryutaro Sato, Hiroyuki Saitoh, Naruki Endo, Shigeyuki Takagi, Motoaki Matsuo, Katsutoshi Aoki, Shin Ichi Orimo

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number091901
JournalApplied Physics Letters
Volume102
Issue number9
DOIs
Publication statusPublished - 2013 Mar 4

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Formation process of perovskite-type hydride LiNiH<sub>3</sub>: In situ synchrotron radiation X-ray diffraction study'. Together they form a unique fingerprint.

Cite this