Ageing of Mg-Ni-H hydrogen storage alloys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00380254" target="_blank" >RIV/68081723:_____/12:00380254 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijhydene.2012.07.049" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2012.07.049</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2012.07.049" target="_blank" >10.1016/j.ijhydene.2012.07.049</a>
Alternative languages
Result language
angličtina
Original language name
Ageing of Mg-Ni-H hydrogen storage alloys
Original language description
In this work, ageing of Mg/Mg2Ni mixtures was investigated. It was observed that hydrogen desorption kinetics from hydrided Mg/Mg2Ni was improved considerably after ageing at room temperature for several days. The ageing was interpreted in terms of phasechanges. Even after almost complete hydridation, besides two main phases e MgH2 and Mg2NiH4 - a certain amount of Mg2NiH0.3 was always present. Similar as Mg2NiH4 phase, Mg2NiH0.3 islands were located on the surface of MgH2 grains. Mg2NiH0.3 transformedinto Mg2NiH4 at the expense of hydrogen from an adjoining MgH2 grain. In such a way, a clean double layer (Mg)eMg2NiH4 was formed, acting as a gate for easy hydrogen desorption from MgH2. It was found that the Mg2NiH4 phase was slightly enriched on non-twinned modification LT1 during the ageing. As a result, both the creation of (Mg)eMg2NiH4 desorption bridges and enrichment of Mg2NiH4 on LT1 during the ageing facilitated onset of rapid hydrogen desorption.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Hydrogen Energy
ISSN
0360-3199
e-ISSN
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Volume of the periodical
37
Issue of the periodical within the volume
OCT
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
14257-14264
UT code for WoS article
000309493600039
EID of the result in the Scopus database
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