Hydrogen storage properties of the supersaturated Mg12YNi solid solution

Hydrogen storage properties of the supersaturated Mg12YNi solid solution
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过饱和Mg12YNi固溶体的储氢特性

DOI:
10.1016/j.jallcom.2010.07.214
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发表时间:
2010-10
影响因子:
6.2
通讯作者:
Q.A. Zhang
Q.A. Zhang
中科院分区:
材料科学2区
文献类型:
--
作者:
T.Z. Si;Y.F. Liu;Q.A. Zhang

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采用熔体快淬技术制备了Mg 12 YNi过饱和固溶体,并对其加氢行为和吸放氢性能进行了研究。发现在473- 573 K的氢化过程中,Mg 2Ni和Y的析出伴随着MgH 2的生成。Mg_2Ni和Y的掺杂对后续的吸放氢有催化作用。因此,过饱和Mg 12 YNi固溶体具有良好的活化性能和改善的吸/放氢动力学。
A supersaturated Mg12YNi solid solution was successfully prepared by melt-spinning technique and its hydrogenation behavior and hydrogen absorption/desorption properties were investigated in detail. It was found that the hydrides of Mg2Ni and Y are formed accompanying the formation of MgH2during the hydrogenation process at 473–573K. The hydrides of Mg2Ni and Y have a catalytic effect on the subsequent hydrogen absorption/desorption. Thus, the supersaturated Mg12YNi solid solution has a good activation property and an improved kinetics of hydrogen absorption/desorption.
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