Effect of impurity N₂ concentration on the hydriding kinetics of Na-doped Mg-Ni alloys

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• 作者：Xuan Quy Tran^a ; ^{xuan.tran@uqconnect.edu.au} ; Stuart D. McDonald^a ; Qinfen Gu^b ; Xin Fu Tan^c ; Kazuhiro Nogita^a
• 关键词：Synchrotron X-ray diffraction ; Hydrides ; Hydrogen storage ; Magnesium alloys ; Hydrogen separation
• 刊名：International Journal of Hydrogen Energy
• 出版年：2017
• 出版时间：5 January 2017
• 年：2017
• 卷：42
• 期：1
• 页码：366-375
• 全文大小：2429 K
• 卷排序：42

文摘

In-situ Synchrotron XRD for hydrogen absorption of Mg–Ni alloys is demonstrated. A N2 content as low as 0.5 mol% can completely inhibit the hydriding of pure Mg2Ni. Na-doped Mg2Ni remains relatively unaffected even at up to 5 mol% of N2. The activated Mg–Ni alloy shows excellent hydriding kinetics under 1 mol% of N2. The effect of Na is assessed based on microstructural effect and chemical analysis.