Reversible hydrogen storage in the lithium borohydride-calcium hydride coupled system

被引：80

作者：

Pinkerton, F. E. ^{[1
]}

Meyer, M. S. ^{[1
]}

机构：

[1] Gen Motors Res & Dev Ctr, Mat & Proc Lab, Warren, MI 48090 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 464卷 / 1-2期

关键词：

energy storage materials; hydrogen absorbing materials; gas-solid reactions; X-ray diffraction;

D O I：

10.1016/j.jallcom.2007.09.125

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：

We report large reversible hydrogen storage in it new Coupled system, LiBH4/CaH2, via the reaction 6LiBH(4) + CaH2 <-> 6LiH + CaB6 + 10H(2) having a theoretical hydrogen capacity of 11.7 wt% and all estimated reaction enthalpy of Delta H = 59 kJ/mol H-2. Samples that include 0.25 mol (18,2 wt%) TiCl3 reproducibly store 9.1 wt% hydrogen, corresponding to 95% of the available hydrogen. H-2 is the only evolved gas detected by mass spectrometry. X-ray diffraction confirms that the sample cycles between LiBH4 and CaH2, in the hydrogenated state and LiH and CaB6 in the dehydrogenated state. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：L1 / L4

页数：4

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