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Structure and hydro...
Structure and hydrogen storage properties of the hexagonal Laves phase Sc(Al1-xNix)2
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- Sahlberg, Martin (författare)
- Uppsala universitet,Oorganisk kemi
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- Ångström, Jonas (författare)
- Uppsala universitet,Oorganisk kemi
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Zlotea, Claudia (författare)
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Beran, Premsyl (författare)
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Latroche, Michel (författare)
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- Pay Gómez, Ceasar (författare)
- Uppsala universitet,Strukturkemi
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- Engelska.
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Ingår i: Journal of Solid State Chemistry. - : Elsevier BV. - 0022-4596 .- 1095-726X. ; 196, s. 132-137
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The crystal structures of hydrogenated and unhydrogenated Sc(Al 1-xNi x) 2 Laves phases have been studied by combining several diffraction techniques and it is shown that hydrogen is situated interstitially in the A 2B 2-sites, which have the maximum number of scandium neighbours. The hydrogen absorption/desorption behaviour has also been investigated. It is shown that a solid solution of hydrogen forms in the mother compound. The hydrogen storage capacity exceeds 1.7 H/f.u. at 374 K, and the activation energy of hydrogen desorption was determined to 4.6 kJ/mol H 2. It is shown that these compounds share the same local coordination as Frank-Kasper-type approximants and quasicrystals, which opens up the possibility of finding many new hydride phases with these types of crystal structures.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Hydrogen storage
- Metal hydrides
- X-ray diffraction
- Approximants
- Diffraction techniques
- Hydrogen absorption
- Hydrogen desorption
- Hydrogen forms
- Hydrogen storage capacities
- Hydrogen storage properties
- Laves phasis
- Laves-phase
- Local coordination
- Mother compounds
- New hydrides
- Activation energy
- Desorption
- Hydrides
- Hydrogen
- X ray diffraction
- Scandium
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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