Development of nanostructured Mg sub(2)Ni alloys for hydrogen storage applications

The Mechanically Activated Self-propagating High temperature Synthesis (MASHS) has been employed to obtain nanostructured Mg sub(2)Ni alloys. MASHS process has been further improved by controlling the electrical parameter measurements during the combustion reaction under the thermal explosion mode....

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Published inInternational journal of hydrogen energy Vol. 36; no. 13; pp. 7897 - 7901
Main Authors Atias-Adrian, I C, Deorsola, F A, Ortigoza-Villalba, G A, DeBenedetti, B, Baricco, M
Format Journal Article
LanguageEnglish
Published 01.07.2011
Subjects
Alloys
Combustion
Dehydrogenation
Differential scanning calorimetry
Explosions
Hydrogen storage
Intermetallic compounds
Mathematical analysis
Nanostructure
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Summary:The Mechanically Activated Self-propagating High temperature Synthesis (MASHS) has been employed to obtain nanostructured Mg sub(2)Ni alloys. MASHS process has been further improved by controlling the electrical parameter measurements during the combustion reaction under the thermal explosion mode. The samples were hydrogenated at 20 bar and 300 degree C by means of a Pressflow Gas Controller while the dehydrogenation was conducted in a Differential Scanning Calorimetry (DSC) equipped with an H sub(2) detector of the purged gas. Nanostructured Mg sub(2)Ni demonstrated hydrogen storage capacity around 3.5 wt%. The desorption temperature was about 250 degree C at 3 degree C/min. The activation energy for dehydrogenation, calculated by the Kissinger method, was about 100 kJ/mol.
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ISSN:0360-3199
DOI:10.1016/j.ijhydene.2011.01.047