A new light-element multi-principal-elements alloy AlMg2TiZn and its potential for hydrogen storage
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00561009" target="_blank" >RIV/68081723:_____/22:00561009 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0960148122012836?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0960148122012836?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.renene.2022.08.108" target="_blank" >10.1016/j.renene.2022.08.108</a>
Alternative languages
Result language
angličtina
Original language name
A new light-element multi-principal-elements alloy AlMg2TiZn and its potential for hydrogen storage
Original language description
Hydrogen storage in a new-designed multi-principal-elements alloy (MPEA) AlMg2TiZn was studied. The chemical composition of the alloy ranks the alloy into the so-called light-elements family of MPEAs. The alloy was prepared by high energy ball milling and the measurements were carried out using Sieverts method in temperature interval 310°C–370 °C under the hydrogen-gas pressure up to 25 bar. It was found that hydrogen absorption capacity was about 1.35–1.4 wt% H2. Activation energy of hydrogen desorption, Ea = 148 ± 1 kJ/mol H2, was significantly lower than known value for pure Mg. Hydrogen absorption occurred in two steps, A1 and A2. The values of activation energy Ea = 175 ± 12 kJ/mol H2 for rapid absorption A1 and Ea = 195 ± 8 kJ/mol H2 for subsequent slow absorption A2 were close to that for Mg. It was proposed that A1 was related to formation of αMgH2, the second one, A2, was related to formation of βMgH2. Absolute value of hydride formation enthalpies, ΔH = 75 ± 3 kJ/mol H2 and ΔH = 70 ± 2 kJ/mol H2 obtained for A1 and A2, respectively, as well as value of ΔH = 76 ± 1 kJ/mol H2 for desorption were about the same as that for pure MgH2.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Renewable Energy
ISSN
0960-1481
e-ISSN
1879-0682
Volume of the periodical
198
Issue of the periodical within the volume
OCT
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
1186-1192
UT code for WoS article
000865418600006
EID of the result in the Scopus database
2-s2.0-85137642025