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Hydrogenation Properties of $Mg_2Ni$-5mass% Nb Composites by Mechanical Alloying  

Seok, Song (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Yeon, Kyu-Boong (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Kim, Kyoung-Il (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Yoo, Sung-Woong (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Cho, Young-Won (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Kim, Ki-Bae (Advanced Metals Research Center, Division of Materials, Korea Institute of Science and Technology)
Hong, Tae-Whan (Dept. of Materials Science and Engineering/ReSEM, Chungju National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.17, no.4, 2006 , pp. 389-394 More about this Journal
Abstract
Mg and Mg-based alloys are promising hydrogen storage alloys for renewable clean energy applications. It is a lightweight and low cost material with high hydrogen storage capacity. However, commercial applications of the Mg hydride are currently hindered by its high absorption/desorption temperature, and very slow reaction kinetics. In this work, we aim to study the absorption properties of the $Mg_2Ni$-5mass% Nb composite prepared by mechanical alloying under hydrogen. The absorption capacity of the sample is found to be about 3.0 wt.% at T=573 K and P=1.0 MPa. The absorption characteristics observed have been compared with those of the prepared $Mg_2Ni$.
Keywords
hydrogen storage alloy; metal hydride; mechanically alloying; absorption kinetic;
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