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Hydriding Behavior of an Mg-xNi Alloys Prepared in Hydriding Combustion Synthesis  

Kim, Ji-Ho (Department of Material Science & Engineering, Han-Yang Univ.)
Choi, Duck-Kyun (Department of Material Science & Engineering, Han-Yang Univ.)
Hwang, Kwang-Taek (Korea Institute of Ceramic Engineering & Technology)
Han, Jeong-Sub (Department of Material Science & Engineering, Dong-A Univ.)
Kim, Jin-Ho (Korea Institute of Ceramic Engineering & Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.21, no.2, 2010 , pp. 123-128 More about this Journal
Abstract
Hydriding combustion synthesis (HCS) can produce full hydrides of alloys and in a short time. The conventional process based on ingot metallurgy cannot produce Mg-based alloy easily with the desired composition and the cast product needs a ling activation process for the practical use of hydrogen storage. In this study, the hydriding properties of Mg-xNi (x=5, 13.5, 54.7wt.%) alloys prepared by hydriding combustion synthesis were evaluated. The hydrogen storage capacity and kinetics of HCS Mg-xNi alloys were strongly dependent on the content of Ni. The HCS Mg-13.5wt.%Ni alloy shows the hydriding behavior to reach the maximum capacity within 30 min. and the reversible $H_2$ storage of 5.3wt.% at 623 K.
Keywords
Hydrogen storage; Hydriding combustion synthesis; Magnesium; Hydrogenation;
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