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采用反应球磨法制备了Mg+10%Ni2P(质量分数,下同)新型复合物,对比研究了球磨复合物和球磨纯镁的相结构与储氢性能。研究表明:在纯Mg中添加10%的Ni2P进行复合球磨,可以明显提高其吸/放氢性能。此外,添加Ni2P球磨明显地改善了镁的循环放氢性能。复合物的晶粒尺寸随着球磨时间的增加而减小;添加Ni2P能有效地抑制Mg/MgH2在吸/放氢过程中产生团聚;在Mg中添加Ni2P球磨能降低体系的放氢反应温度。
A new Mg + 10% Ni2P (mass fraction, the same below) novel composite was prepared by reactive ball milling. The phase structure and hydrogen storage properties of the ball milled composite and ball milled pure magnesium were compared. The results show that the addition of 10% Ni2P into pure Mg for ball milling can improve the performance of hydrogen absorption / desorption. In addition, the addition of Ni2P ball milling significantly improves the cyclic hydrogen desorption performance of magnesium. The grain size of the composites decreases with the increase of milling time. The addition of Ni2P can restrain the agglomeration of Mg / MgH2 effectively in the process of aspiration / desorption. The addition of Ni2P in Mg can decrease the reaction temperature of the system.