Structures and properties of La-Mg-Ni system hydrogen storage alloys
来源期刊：中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)
论文作者：肖方明 王英 唐仁衡 卢其云 彭能
文章页码：963 - 966
Key words：La-Mg-Ni; hydrogen storage alloy; structures; properties; double-roller rapid quenching
Abstract: 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 ℃ for 4 h , 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.
基金信息：the Natural Science Foundation of Guangdong Province, China
