Nanocatalyst doping of Zn(BH4)2 for on-board hydrogen storage

被引：43

作者：

Srinivasan, Sesha ^{[1
]}

Escobar, Diego ^{[1
]}

Jurczyk, Michael ^{[1
]}

Goswami, Yogi ^{[1
]}

Stefanakos, Elias ^{[1
]}

机构：

[1] Univ S Florida, Coll Engn, Clean Energy Res Ctr, Tampa, FL 33620 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 462卷 / 1-2期

关键词：

zinc borohydrides; hydrogen storage; mechanochemical synthesis; thermogravimetric analysis; complex hydrides; dehydrogenation; nanocatalyst doping;

D O I：

10.1016/j.jallcom.2007.08.028

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：

In this work, we report the synthesis and characterization of Zn(BH4)(2), a new class of complex borohydrides for on-board hydrogen storage. The thermal decomposition of Zn(BH4)(2) comprises of not only the evolution of H-2, but also an appreciable amount of B-H (borane) compounds. Lowering the decomposition temperature by catalytic doping may lead to negligible release of boranes. An amount of 1.5 mol% nanoNi was estimated and found to be the optimum concentration for nanocatalyst doping of Zn(BH4)(2). Significance of the nanoNi doping, lowers the melting and thermal decomposition temperatures (at least 20-40 degrees C) of Zn(BH4)(2) as evidenced from the calorimetric analysis. At these low temperatures, the nanocatalyzed Zn(BH4)(2) exhibits reduction in the amount of borane gases released by a factor of 20 as compared to the undoped sample. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：294 / 302

页数：9

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