Electron microscopy study of Ti-doped sodium aluminum hydride prepared by mechanical milling NaH/Al with Ti powder

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	Electron microscopy study of Ti-doped sodium aluminum hydride prepared by mechanical milling NaH/Al with Ti powder
	X. D. Kang; P. Wang; H. M. Cheng
	2006
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	100 期号:3
摘要	Quite recently, we have demonstrated that mechanical milling NaH/Al mixture with metallic Ti powder resulted in the formation of catalytically active Ti hydride. In the present study, the morphology and the distribution state of the catalytically active Ti hydride and the parent phases of the as-prepared and cycled samples were examined by electron microscopy in combination with energy dispersive x-ray analysis. It was observed that the de-/hydriding cycles resulted in a substantial change on the particle size and grain size of Al. In particular, a specific correlation between the distribution states of Al and Ti hydride was developed after de-/hydriding cycles. In addition, a variation of milling atmosphere during the doping process was found to lead to a varied distribution state of Ti hydride phase. Understanding of these structural characteristics, especially in combination with the previously observed hydrogen storage performance of the materials, has provided insight into the catalytic mechanism and reaction processes of metallic Ti-doped NaAlH(4). (c) 2006 American Institute of Physics.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;wang, p (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;pingwang@imr.ac.cn
关键词	Reversible Hydrogen Storage X-ray-diffraction Naalh4 Titanium Alanates State Decomposition Spectroscopy Absorption Precursors
URL	查看原文
WOS记录号	WOS:000239764100126
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34282
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. D. Kang,P. Wang,H. M. Cheng. Electron microscopy study of Ti-doped sodium aluminum hydride prepared by mechanical milling NaH/Al with Ti powder[J]. Journal of Applied Physics,2006,100(3).
APA	X. D. Kang,P. Wang,&H. M. Cheng.(2006).Electron microscopy study of Ti-doped sodium aluminum hydride prepared by mechanical milling NaH/Al with Ti powder.Journal of Applied Physics,100(3).
MLA	X. D. Kang,et al."Electron microscopy study of Ti-doped sodium aluminum hydride prepared by mechanical milling NaH/Al with Ti powder".Journal of Applied Physics 100.3(2006).