In-situ investigation of the hydrogen release mechanism in bulk Mg₂NiH₄

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• 作者：Xuan Quy Tran^a ; ^{xuan.tran@uqconnect.edu.au} ; Stuart D. McDonald^a ; Qinfen Gu^b ; Tomokazu Yamamoto^c ; Koji Shigematsu^c ; Kohei Aso^c ; Eishi Tanaka^c ; Syo Matsumura^c ; Kazuhiro Nogita^a
• 关键词：Hydrogen storage ; Mg2NiH4 ; In-situ high voltage transmission electron microscopy ; Synchrotron powder X-ray diffraction ; Metal hydrides
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：341
• 期：Complete
• 页码：130-138
• 全文大小：2704 K
• 卷排序：341

文摘

The dehydriding of bulk Mg2NiH4 is shown in real-time using ultra-high voltage TEM. The dehydriding occurs via a mechanism of nucleation and growth of Mg2NiHx (x∼0–0.3). In-situ Synchrotron XRPD and DSC further support the observed behaviour of Mg2NiH4. A high density of stacking faults is observed in the dehydrided lattices by ARM-TEM.