Hydrogen-storage properties of Mg–23.5Ni–(0 and 5)Cu prepared by melt spinning and crystallization heat treatment
- 作者：Myoung Youp Song ; Sung Nam Kwon ; Jong-Soo Bae ; Seong-Hyeon Hong
- 关键词：Hydrogen storage ; Melt spinning ; Cystallization heat treatment ; Mg– ; 23.5Ni– ; 5Cu alloy ; Hydriding and dehydriding rates
- 刊名：International Journal of Hydrogen Energy
- 出版年：2008
- 期刊代码：42_03603199
- 类别：ch
- 出版时间：March 2008
- 卷：33
- 期：6
- 页码：1711-1718
- 文件大小：612 K
摘要
Mg–23.5 wt%Ni and Mg–23.5 wt%Ni–5 wt%Cu alloys for hydrogen storage were prepared by melt spinning and crystallization heat treatment. The alloys were ground by a planetary ball mill for 2 h in order to obtain a fine powder. The activated Mg–23.5Ni and Mg–23.5Ni–5Cu alloys absorbed 4.34 and 4.84 wt%H, respectively, at 573 K under 12 bar H2 for 60 min. The activated Mg–23.5Ni and Mg–23.5Ni–5Cu alloys desorbed 4.27 and 4.81 wt%H, respectively, at 573 K under 1.0 bar H2 for 30 min. The hydriding rates of the alloys are quite high, even at 473 K, while the dehydriding rates of the samples at 473 K are nearly zero.