Dehydrogenation behavior of LiBH4/CaH2 composite with NbF5

被引：34

作者：

Lim, Jae-Hag ^{[1
,2
]}

Shim, Jae-Hyeok ^{[1
]}

Lee, Young-Su ^{[1
]}

Cho, Young Whan ^{[1
]}

Lee, Joonho ^{[2
]}

机构：

[1] Korea Inst Sci & Technol, Mat Sci & Technol Res Div, Seoul 136791, South Korea

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 12期

关键词：

Hydrogen storage; Hydrides; Mechanical milling; Thermodynamics; Differential scanning calorimetry;

D O I：

10.1016/j.scriptamat.2008.08.037

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dehydrogenation behavior of 6LiBH(4) + CaH2 + 0.2NbF(5) composite has been investigated. It is demonstrated that the addition of NbF5 is effective in lowering the dehydrogenation temperature of this composite. The composite starts dehydrogenation before the melting of LiBH4 and releases 9.1 wt.% hydrogen up to 400 degrees C. The equilibrium dehydrogenation temperature under I bar of hydrogen is estimated to be 309 degrees C with a reaction enthalpy change of 56.5kJ mol(-1) H-2, which is consistent with thermodynamic calculation. Crown Copyright (c) 2008 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.

引用

页码：1251 / 1254

页数：4

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