Improved dehydrogenation performance of LiBH4/MgH2 composite with Pd nanoparticles addition

被引：47

作者：

Weng, B. C. ^{[1
]}

Yu, X. B. ^{[2
]}

Wu, Z. ^{[1
]}

Li, Z. L. ^{[1
]}

Huang, T. S. ^{[1
]}

Xu, N. X. ^{[1
]}

Ni, J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

[2] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 503卷 / 02期

关键词：

Lithium borohydride; Hydrogen storage material; Magnesium hydride; Pd nanoparticles; HYDROGEN STORAGE PROPERTIES; LI;

D O I：

10.1016/j.jallcom.2009.11.059

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：

The hydrogen storage properties of LiBH4/MgH2 ball milled with Pd nanoparticles were investigated. By introduction of Pd nanoparticles, the initial dehydrogenation temperature of the composite decreases from 340 to 260 degrees C and the total weight loss reaches up to 8.0 wt.% below 400 degrees C. Rehydrogenation results show 7.9 wt.% hydrogen can be rehydrogenated from the dehydrogenated product at 400 degrees C under 35 atm of hydrogen for 6 h. XRD analysis demonstrates that the hydrogen desorption of the Pd doped LiBH4/MgH2 mixture mainly includes two steps: first, at temperature above 260 degrees C, magnesium hydride reacts with Pd nanoparticles to generate Mg6Pd and the decomposition of MgH2; and then, above 350 degrees C, magnesium reacts with LiBH4 to form MgB2 and LiH. (C) 2009 Published by Elsevier B.V.

引用

页码：345 / 349

页数：5

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