The Crystal Structures in Hydrogen Absorption Reactions of REMgNi 4 -Based Alloys (RE: Rare-Earth Metals)

Toyoto Sato and Shin-ichi Orimo
Additional contact information
Toyoto Sato: Department of Engineering Science and Mechanics, College of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan
Shin-ichi Orimo: Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan

Energies, 2021, vol. 14, issue 23, 1-10

Abstract: REMgNi 4 -based alloys, RE (2−x) Mg x Ni 4 (RE: rare-earth metals; 0 < x < 2), with a AuBe 5 -type crystal structure, exhibit reversible hydrogen absorption and desorption reactions, which are known as hydrogen storage properties. These reactions involve formation of three hydride phases. The hydride formation pressures and hydrogen storage capacities are related to the radii of the RE (2−x) Mg x Ni 4 , which in turn are dependent on the radii and compositional ratios of the RE and Mg atoms. The crystal structures formed during hydrogen absorption reactions are the key to understanding the hydrogen storage properties of RE (2−x) Mg x Ni 4 . Therefore, in this review, we provide an overview of the crystal structures in the hydrogen absorption reactions focusing on RE (2−x) Mg x Ni 4 .

Keywords: hydrogen storage materials; hydrides; crystal structures (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/23/8163/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/23/8163/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:23:p:8163-:d:695705

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().