Reversible hydrogen storage from 6LiBH4 MCl3 (M = Ce, Gd) composites by in-situ formation of MH2

被引：37

作者：

Gennari, F. C. ^{[1
,2
]}

Fernandez Albanesi, L. ^{[1
]}

Puszkiel, J. A. ^{[1
,2
]}

Arneodo Larochette, P. ^{[1
,2
]}

机构：

[1] Ctr Atom Bariloche CNEA, San Carlos De Bariloche, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 01期

关键词：

Complex hydrides; Borohydrides; Composite powders; Mechanical milling; Borides; STABILITY; HYDRIDES;

D O I：

10.1016/j.ijhydene.2010.10.010

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：

Different destabilized LiBH4 systems with several interacting components are being explored for hydrogen storage applications. In this study, hydrogen sorption properties of as-milled 6LiBH(4-)MCl(3) composites (M = Ce, Gd) are investigated by X-ray diffraction, differential scanning calorimetry and thermovolumetric measurements. The chemical interaction between metal halides and LiBH4 decreases the dehydrogenation temperature in comparison with as-milled LiBH4. Hydrogen release starts at 220 degrees C from the decomposition of M(BH4)(3) formed during milling and proceeds through destabilization of LiBH4 by in-situ formed MH2. The dehydrogenation products CeB6-LiH and GdB4-LiH can be rehydrided under moderate conditions, i.e 400 degrees C and 6.0 MPa of hydrogen pressure for 2 h without catalyst. A new 6LiBH(4)-CeCl3-3LiH composite shows promissory hydrogen storage properties via the formation by milling of CeH2+x Our study is the first work about reversible hydrogen storage in LiBH4-MCl3 composites destabilized by in-situ formed MH2. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：563 / 570

页数：8

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