TY - JOUR
T1 - Formation process of perovskite-type hydride LiNiH3
T2 - In situ synchrotron radiation X-ray diffraction study
AU - Sato, Ryutaro
AU - Saitoh, Hiroyuki
AU - Endo, Naruki
AU - Takagi, Shigeyuki
AU - Matsuo, Motoaki
AU - Aoki, Katsutoshi
AU - Orimo, Shin Ichi
PY - 2013/3/4
Y1 - 2013/3/4
N2 - 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.
AB - 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.
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U2 - 10.1063/1.4794067
DO - 10.1063/1.4794067
M3 - Article
AN - SCOPUS:84875164237
SN - 0003-6951
VL - 102
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 9
M1 - 091901
ER -