Effects of ball-milling conditions on dehydrogenation of Mg(NH2)2-MgH2

被引：39

作者：

Hu, Jianjiang

Xiong, Zhitao

Wu, Guotao

Chen, Ping

Murata, Kenji

Sakata, Ko

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Inst Appl Energy, Tokyo, Japan

来源：

JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 01期

关键词：

magnesium amide; magnesium hydride; ball-milling time; imide formation; hydrogen desorption;

D O I：

10.1016/j.jpowsour.2006.04.005

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 dependence of chemical reaction between Mg(NH2)(2) and MgH2 on the ball-milling conditions has been investigated. While the decomposition of the component Mg(NH2)(2) resulted in gaseous products consisting mainly of ammonia, the mixtures of Mg(NH2)(2)-MgH2 prepared by ball-milling released H-2 at temperatures as low as 65 degrees C. In addition, the increase in ball-milling time can effectively suppress the ammonia evolution during the thermal treatment. The conversion of the amide and hydride to imide-like structure was demonstrated by FTIR and XRD characterization. A total amount of 4.8 wt.% of H-2 could be released from the investigated system. (c) 2006 Elsevier B.V. All rights reserved.

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收藏

页码：120 / 125

页数：6

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