银和铝对Mg2Ni合金储氢性能的影响

被引：4

作者：

李谦

蒋利军

林勤

周国治

詹锋

郑强

尉秀英

机构：

[1] 北京有色金属研究总院能源材料及技术研究中心

[2] 北京科技大学理化系

来源：

中国有色金属学报 | 2003年 / 04期

关键词：

氢化燃烧合成; 储氢合金; Mg-Ag-Ni; Mg-Al-Ni; 储氢性能;

D O I：

10.19476/j.ysxb.1004.0609.2003.04.010

中图分类号：

TG139.7 [];

学科分类号：

摘要：

用氢化燃烧法合成Mg2-xAgxNi(x=0.05,0.1,0.2,0.5)和Mg2-xAlxNi(x=0,0.1,0.2,0.5)。PCT结果说明合成的Mg Ni Ag和Mg Ni Al储氢合金材料具有很高的活性和理想的储氢性能。对两个体系的PCT结果分别进行计算,得出温度和氢平衡压的关系式。在423K时Mg1.8Ag0.2Ni在5min之内的放氢量为2.14%/min(质量分数);Mg1.5Al0.5Ni在α+β相区的吸氢速率为4.88%/min(质量分数),放氢速率为1.26%/min(质量分数)。用XRD方法进行物相分析表明:添加少量银没有改变Mg2Ni的结构;添加铝却改变了Mg2Ni的结构,使储氢合金材料的储放氢动力学性能均得到改善。

引用

页码：864 / 870

页数：7

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