Mg-M-LiH alloys prepared by mechanical milling and their hydrogen storage characteristics

被引:12
作者
Suarez-Alcantara, K. [1 ]
Palacios-Lazcano, A. F. [2 ]
Funatsu, T. [3 ]
Cabanas-Moreno, J. G. [4 ]
机构
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat Sede Morelia, Unidad Morelia, Morelia 58190, Michoacan, Mexico
[2] ESIME Zacatenco, Unidad Profes Adolfo Lopez Mateos, Mexico City 07738, DF, Mexico
[3] Techno Syst CO LTD, Takatsuki, Osaka, Japan
[4] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico
关键词
Hydrogen storage; Mg-M-LiH alloys; Magnesium hydride; Mechanical alloying; SORPTION KINETICS; THERMAL-DECOMPOSITION; MAGNESIUM HYDRIDE; TRANSITION-METALS; NB2O5; TEMPERATURE;
D O I
10.1016/j.ijhydene.2015.04.083
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Mg96M2(LiH)(2) (M = Y, Zn, Al, Ag), Mg-98(LiH)(2) and Mg-96(LiH)(4) powder alloys were produced by ball milling and deliberately air-exposed by 12 h in order to investigate their hydrogen storage properties. The addition of LiH at the level of 2 mol% had a beneficial effect on the ldnetics of the hydriding and dehydriding processes at 300 and 350 degrees C compared to mechanically milled and air-exposed Mg powders. However, the additions of Al, Ag, Zn and Y had an opposite effect on the hydriding/dehydriding kinetics. The addition of Al provided a small advantage in the capacity of hydrogen storage among the tested materials. The effects of air-exposure were analyzed, it was demonstrated that among a set of Mg and Mg-alloys heavily oxidized the hydrogen storage is still viable. Copyright (c) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:17344 / 17353
页数:10
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