Magnesium borohydride:: A new hydrogen storage material

被引：78
|
作者：
Matsurtaga, T. [1 ]
Buchter, F. [1 ]
Miwa, K. [3 ]
Towata, S. [3 ]
Orimo, S. [4 ]
Zuettel, A. [1 ,2 ]
机构：
[1] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland
[2] EMPA, Dept Environm Energy & Mobility, Abt 138 Hydrogen & Energy, CH-8600 Dubendorf, Switzerland
[3] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan
[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
RENEWABLE ENERGY | 2008年 / 33卷 / 02期
关键词：
hydrogen absorbing materials; thermodynamic properties; thermal analysis;
D O I：
10.1016/j.renene.2007.05.004
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Magnesium borohydride (Mg(BH4)(2)) is a promising material for hydrogen storage because of its high gravimetric storage density (15.0 mass%). We intended to synthesize Mg(BH4)(2) by decomposition reaction of LiBH4 with MgCl2 by heat treatment without using a solvent, where the product consists of LiCl and a compound of magnesium, boron and hydrogen. Hydrogen desorption temperature of the product is approximately 100 K lower than that of LiBH4 and the decomposition consists of a two-step reaction. The products of the 1st and 2nd decomposition reactions are MgH2 and Mg, respectively. This result indicates the following two-step reaction (1st reaction: Mg(BH4)(2) --> MgH2 + 2B + 3H(2), 2nd reaction: MgH2 --> Mg + H-2). The first decomposition peak is dominant and is around 563 K. The 2nd decomposition occurs at the temperature greater than 590 K. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：193 / 196
页数：4
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