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http://dx.doi.org/10.7316/khnes.2011.22.6.787

Hydriding and Dehydriding Rates of Magnesium-Nickel Alloy Fabricated by Milling under Hydrogen  

Song, Myoung-Youp (Division of Advanced Materials Engineering, Department of Hydrogen and Fuel Cells, Research Center of Advanced Materials Development, Engineering Research Institute, Chonbuk National University)
Baek, Sung-Hwan (Division of Advanced Materials Engineering, Department of Hydrogen and Fuel Cells, Research Center of Advanced Materials Development, Engineering Research Institute, Chonbuk National University)
Park, Hye-Ryoung (School of Applied Chemical Engineering, Chonnam National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.6, 2011 , pp. 787-793 More about this Journal
Abstract
A 76.5wt%Mg - 23.5wt%Ni (Mg-23.5Ni) sample was prepared by reactive mechanical grinding (RMG) and its hydriding and dehydriding properties were then investigated. Activation of the Mg-23.5Ni sample was completed only after two hydriding (under 12 bar $H_2$) - dehydriding (under 1.0 bar $H_2$) cycles at 593K. The reactive mechanical grinding of Mg with Ni is considered to facilitate nucleation and shorten diffusion distances of hydrogen atoms. After hydriding - dehydriding cycling, the Mg-23.5Ni sample contained Mg2Ni phase.
Keywords
$H_2$-storage properties of Mg; Addition of Ni; Reactive mechanical grinding; $Mg_2Ni$ formation; $Mg(OH)_2$ formation;
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Times Cited By KSCI : 5  (Citation Analysis)
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