The system will be going down for regular maintenance. Please save your work and logout.
Improvement of hydriding and dehydriding rates of Mg via addition of transition elements Ni, Fe, and Ti
SONG, Myoung-Youp
Division of Advanced Materials Engineering, Research Center of Advanced Materials Development
See more >
Division of Advanced Materials Engineering, Research Center of Advanced Materials Development
SONG, Myoung-Youp
Division of Advanced Materials Engineering, Research Center of Advanced Materials Development
< Reduce
Division of Advanced Materials Engineering, Research Center of Advanced Materials Development
Language
en
Article de revue
This item was published in
International Journal of Hydrogen Energy. 2011, vol. 36, n° 20, p. 12932-12938
Elsevier
English Abstract
An Mg-10wt%Ni-5wt%Fe-5wt%Ti sample was prepared by mechanical grinding under H<sub>2</sub> (reactive mechanical grinding) using a planetary ball mill. The phases and their weight percentages were analyzed with the Full ...Read more >
An Mg-10wt%Ni-5wt%Fe-5wt%Ti sample was prepared by mechanical grinding under H<sub>2</sub> (reactive mechanical grinding) using a planetary ball mill. The phases and their weight percentages were analyzed with the Full Proof program from the XRD patterns of the Mg-10Ni-5Fe-5Ti samples after reactive mechanical grinding and after dehydriding at the seventh cycle. The Mg-10Ni-5Fe-5Ti sample after reactive mechanical grinding contained Mg, TiH<sub>2</sub>, MgH<sub>2</sub>, and Ni phases, and the sample dehydrided at the seventh cycle contained Mg, TiH<sub>2</sub>, MgO, Mg<sub>2</sub>Ni, and Fe phases. The prepared Mg-10Ni-5Fe-5Ti sample had an effective hydrogen-storage capacity larger than 5 wt%H. The activated Mg-10Ni-5Fe-5Ti sample absorbed 5.31 and 5.51 wt%H for 5 and 60 min, respectively, at 573 K under 12 bar H<sub>2</sub> and desorbed 1.58, 3.64, and 5.18 wt%H for 10, 30, and 60 min, respectively, at 573 K under 1.0 bar H<sub>2</sub>. The effects of reactive mechanical grinding, hydriding-dehydriding cycling, and addition of transition elements Ni, Fe, and Ti were discussed.Read less <
English Keywords
Hydrogen-storage material
Reactive mechanical grinding (RMG)
Magnesium
Nickel
Titanium
Temperature dependence
Origin
Hal imported