Synergistic hydrogen desorption properties of the 4LiAlH₄ + Mg₂NiH₄ composite

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• 作者：Shanshan Li^a ; ^b ; Yunfeng Zhu^a ; ^b ; ^{yfzhu@njtech.edu.cn} ; Yana Liu^a ; ^b ; Yao Zhang^b ; ^c ; ^{zhangyao@seu.edu.cn} ; Huaijun Lin^a ; ^b ; Xiangqian Ding^a ; ^b ; Liquan Li^a ; ^b
• 关键词：Mg2NiH4 ; LiAlH4 ; Hydriding combustion synthesis ; Mechanical milling ; Mutual destabilization ; Dehydrogenation reaction
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：697
• 期：Complete
• 页码：80-85
• 全文大小：1728 K
• 卷排序：697

文摘

A novel 4LiAlH4 + Mg2NiH4 composite was synthesized. The synergistic hydrogen desorption effect has been discovered for the first time. Mg2NiH4 promotes decomposition of LiAlH4 in MM and thermal desorption process. In situ formed Al can destabilize Mg2NiH4 via a new reaction pathway. The composite shows ultrafast re-hydrogenation kinetics in initial three cycles.