New metal-N-H system composed of Mg(NH2)2 and LiH for hydrogen storage

被引:284
作者
Leng, HY
Ichikawa, T
Hino, S
Hanada, N
Isobe, S
Fujii, H
机构
[1] Hiroshima Univ, Grad Sch Adv Sci & Matter, Higashihiroshima 7398530, Japan
[2] Hiroshima Univ, Nat Sci Ctr Basic Res & Dev, Higashihiroshima 7398526, Japan
关键词
D O I
10.1021/jp048002j
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
We have investigated the hydrogen storage properties of a ball-milled mixture of 3Mg(NH2)(2) and 8LiH after first synthesizing Mg(NH2)(2) by ball milling MgH2 under an atmosphere of NH3 gas at room temperature. The thermal desorption mass spectra of the mixture without any catalysts indicated that a large amount of hydrogen (similar to7 wt %) was desorbed from 140 degreesC, and the desorption peaked at similar to190 degreesC under a heating rate of 5 degreesC/min with almost no ammonia emission. Moreover, the reversibility of the hydrogen absorption/desorption reactions was confirmed to be complete. The above results indicate that this system is one of the promising metal-N-H systems for hydrogen storage.
引用
收藏
页码:8763 / 8765
页数:3
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