Improved hydrogen storage performance of the LiNH2-MgH2-LiBH4 system by addition of ZrCo hydride

被引：33

作者：

Zhang, Xugang ^{[1
]}

Li, Zhinian ^{[1
]}

Lv, Fang ^{[1
]}

Li, Hualing ^{[1
]}

Mi, Jing ^{[1
]}

Wang, Shumao ^{[1
]}

Liu, Xiaopeng ^{[1
]}

Jiang, Lijun ^{[1
]}

机构：

[1] Gen Res Inst NonFerrous Met, Beijing 100088, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 15期

关键词：

Hydrogen storage materials; LiNH2; LiBH4; MgH2; ZrCo hydride; N-H SYSTEM; IMIDES;

D O I：

10.1016/j.ijhydene.2010.05.095

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：

Significant improvements in the hydrogen absorption/desorption properties of the 2LiNH(2)-1.1MgH(2)-0.1LiBH(4) composite have been achieved by adding 3wt% ZrCo hydride. The composite can absorb 5.3wt% hydrogen under 7.0 MPa hydrogen pressure in 10 min and desorb 3.75wt% hydrogen under 0.1 MPa H-2 pressure in 60 min at 150 degrees C, compared with 2.75wt% and 1.67wt% hydrogen under the same hydrogenation/dehydrogenation conditions without the ZrCo hydride addition, respectively. TPD measurements showed that the dehydrogenation temperature of the ZrCo hydride-doped sample was decreased about 10 degrees C compared to that of the pristine sample. It is concluded that both the homogeneous distribution of ZrCo particles in the matrix observed by SEM and EDS and the destabilized N-H bonds detected by IR spectrum are the main reasons for the improvement of H-cycling kinetics of the 2LiNH(2)-1.1MgH(2)-0.1LiBH(4) system. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：7809 / 7814

页数：6

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