The dehydrogenation process of amorphous (Mg60Ni25)92La8 alloy
作者： Lu Li , D.C. Wu , G.Y. Liang , Z.B. Sun , Y.L. Guo
DOI: 10.1016/J.JALLCOM.2008.06.087
关键词:
摘要: Abstract The dehydrogenation of the amorphous (Mg60Ni25)92La8 alloy was investigated by both galvanostatic and non-isothermal methods. process analyzed in detail differential scanning calorimetry (DSC), thermogravimetry (TG) X-ray diffraction (XRD). Experimental results showed a maximum discharge capacity 558 mAh/g at room temperature 4.5 wt.% released hydrogen heating rate 5 °C/min. divided two steps. In first step, 2 wt.% H, which corresponded to phase growth Mg2NiH4. second 2.5 wt.% corresponding Mg2NiH4 accompanied formation LaH2. During charging process, partially crystallized into phase. It found that storage larger than solute H atoms dissolved could be easily temperature, suggested restraining crystallization during useful improve capacity.
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