Improvement of hydrogen storage properties of Mg by catalytic effect of Al-containing phases in Mg-Al-Ti-Zr-C powders

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00504489" target="_blank" >RIV/68081723:_____/19:00504489 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0360319919312170?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360319919312170?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2019.03.188" target="_blank" >10.1016/j.ijhydene.2019.03.188</a>

Result language
angličtina
Original language name
Improvement of hydrogen storage properties of Mg by catalytic effect of Al-containing phases in Mg-Al-Ti-Zr-C powders
Original language description
The hydrogen storage (HS) properties and structures of ball-milled (BM) Mg-Ti-Al-Zr-C powders prepared under various milling conditions were investigated. The additions Ti, Zr, Al and C improved HS performance of Mg-based materials. The beneficial effect can be explained by catalysis of particles rich in Al, Ti and Zr located on the surface of Mg grains. The particles provide effective pathways for the hydrogen diffusion from/into the re/forming MgH2. The morphological and microstructural characteristics were investigated by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) and by X-ray diffraction (XRD). The hydrogen sorption was measured by Sieverts method. The various preparation processes of powders resulted in two phases: Mg17Al12, Mg1.95Al0.05. It was found, that mainly these phases had a strong positive effect on HS properties of studied powders. Both phases increased desorption/absorption equilibrium pressure. Improvement of desorption kinetics of powder containing phase Mg17Al12 was more expressive than powders with of Mg1.95Al0.05.
Czech name
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Czech description
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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

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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