Development of nanostructured Mg2Ni alloys for hydrogen storage applications

✍ Scribed by I.C. Atias-Adrian; F.A. Deorsola; G.A. Ortigoza-Villalba; B. DeBenedetti; M. Baricco

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 601 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2011.01.047

✦ Synopsis

The Mechanically Activated Self-propagating High temperature Synthesis (MASHS) has been employed to obtain nanostructured Mg 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 C by means of a Pressflow Gas Controller while the dehydrogenation was conducted in a Differential Scanning Calorimetry (DSC) equipped with an H 2 detector of the purged gas.

Nanostructured Mg 2 Ni demonstrated hydrogen storage capacity around 3.5 wt%. The desorption temperature was about 250 C at 3 C/min. The activation energy for dehydrogenation, calculated by the Kissinger method, was about 100 kJ/mol.