Structures and properties of La-Mg-Ni system hydrogen storage alloys

被引:0
|
作者
Xiao Fang-ming [1 ]
Wang Ying [1 ]
Tang Ren-heng [1 ]
Lu Qi-yun [1 ]
Peng Neng [1 ]
机构
[1] Guangzhou Res Inst Nonferrous Met, Res Inst Rare Met, Guangzhou 510651, Peoples R China
关键词
La-Mg-Ni; hydrogen storage alloy; structures; properties; double-roller rapid quenching;
D O I
暂无
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The double-roller rapid quenching technology was successfully used to prepare La-Mg-Ni system hydrogen storage alloys; The effects of magnesium content and heat-treatment process on the alloys properties were studied. When the alloy with 1.09%(mass fraction) Mg is heat treated,at 900 degrees C for 4 It, its discharge capacity is more than 380 mA-h/g at 0.2C, and the cyclic life is beyond 500 counts at 2C. By XRD and PCI analyzing, the results show that the alloys are composed of LaNi5 and LaNi3 phase. The hydrogen absorption/desorption pressure of the alloy increases, so does the slope of plateau, and the plateau becomes broad first and narrow again as Mg content increases. This method is simple to be suitable for production on a large scale.
引用
收藏
页码:S963 / S966
页数:4
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