Improvement of hydrogen storage characteristics of Mg by planetary ball milling under H2 with metallic element(s) and/or Fe2O3

✍ Scribed by Myoung Youp Song; Sung Nam Kwon; Jean-Louis Bobet; Hye Ryoung Park; Daniel R. Mumm

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 875 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2010.12.059

✦ Synopsis

Among samples of MgeNi, MgeNie5Fe 2 O 3 , and MgeNie5Fe, MgeNie5Fe had the highest hydriding and dehydriding rates. For the as-milled MgeNie5Fe alloy and the hydrided MgeNie5Fe alloy after activation, the weight percentages of the constituent phases were calculated using the FullProf program. The creation of defects and the diminution of Mg particle size through reactive mechanical grinding and hydridingedehydriding cycling, and the formation of the Mg 2 Ni phase are considered to increase the hydriding and dehydriding rates. Mge14Nie2Fee2Tie2Mo had higher hydriding and dehydriding rates than did any of the other samples (MgeNi, MgeNie5Fe 2 O 3 , MgeNie5Fe, and Mge14Nie6Fe 2 O 3 ) prepared in this work.