Reversible hydrogen storage in metal-doped Mg-LiBH4 composites

被引：31

作者：

Puszkiel, J. A. ^{[1
]}

Gennari, F. C. ^{[1
]}

机构：

[1] Ctr Atom Bariloche CNEA, Inst Balseiro UNCuyo, CONICET, San Carlos De Bariloche, Argentina

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 08期

关键词：

Hydrogen storage; Borohydrides; Composite powders; Mechanical milling; HYDRIDE FORMATION; MAGNESIUM; SORPTION; KINETICS; LIBH4;

D O I：

10.1016/j.scriptamat.2008.12.038

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Composite powders of Mg50Ni and Mg15Fe with LiBH4 have been produced by short-time milling under an argon atmosphere. These composites show enhanced reversible hydrogen capacities of 7 wt% (Ni) and 5.5 wt% (Fe) at 573 K in just 300 s. The presence of LiBH4 does not modify the thermodynamic of the composites, but does account for their improved kinetic behavior. As evidence of a new kind of Mg-B interaction, MgNi3B2 is clearly identified after successive hydrogen sorption cycles below 623 K. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：667 / 670

页数：4

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