氢化燃烧合成复合机械球磨制备Mg95Ni5+NbF5放氢性能及其机理研究[EB/OL]
北京：中国科技论文在线
添加0
5 mol% NbF5机械球磨5 h可使Mg95Ni5的放氢性能达到最佳
） 摘要： 本文研究了氢化燃烧合成复合高能球磨制备Mg95Ni5+NbF5放氢性能及其机理
新型能源材料 【收录情况】 中国科技论文在线： 卫灵君
） Abstract： The hydrogen desorption property and mechanism of Mg95Ni5+NbF5 composite prepared by hydriding combustion synthesis and mechanical milling (HCS+MM) was investigated
The hydrogen desorption kinetics of Mg95Ni5 composite with 0
1, 0
2, 0
5, 1 mol% NbF5 after 3, 5, 7, 10 h mechanical milling (MM) at 473, 493, 523K were measured respectively
At 523K, Mg95Ni5 composite with 0
5 mol% NbF5 milled for 5 h can desorb 5
1 wt
% of H2 in 60 min
The apparent activation energy of the Mg95Ni5 + 0
5 mol% NbF5 system calculated by Arrhenius equation is only 127
74 kJ/mol, which is lower than the pristine system
XRD examination suggested that the formation of MgF2 and Nb-series products with various high valence states may contribute to kinetic improvement
Keywords： Materials Science; Hydrogen desorption property; NbF5; Catalytic effect 下载PDF阅读器 PDF全文下载： 初稿 （ 162 ） 作者简介： 卫灵君（1985-）
放氢性能
新型能源材料 通信联系人： 李李泉（1955-）
主要考察了不同添加量（0
1, 0
2, 0
5, 1 mol%）以及不同球磨时间（3, 5, 7, 10 h）球磨的HCS产物Mg95Ni5分别在不同温度（473, 493, 523K）下的放氢性能
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