Cycling performance of La(Ni3.8Al1.0Mn0.2)(x)(x=0.94-1.0) alloys

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	Cycling performance of La(Ni3.8Al1.0Mn0.2)(x)(x=0.94-1.0) alloys
	S. L. Li; W. Chen; G. Luo; X. B. Han; D. M. Chen; K. Yang; W. P. Chen
	2012
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	532 页码:68-71
摘要	The effects of hydrogen absorption/desorption cycling on the hydrogen storage capacity, plateau pressure, pulverization resistance and surface morphologies of La(Ni3.8Al1.0Mn0.2)(x) (x = 0.94, 0.96, 0.98, 1.0) alloys were investigated. It was found that the investigated alloys subjected to 300 absorption/desorption cycles did not exhibit significant changes in hydrogen storage capacity. The plateau region was relatively flat and there was no obvious hysteresis loss after 300 cycles. The mean particle sizes for the three non-stoichiometric alloys were much larger than that of LaNi3.8Al1.0Mn0.2 alloy. X-ray diffraction profiles revealed that the La(Ni3.8Al1.0Mn0.2)(x) alloys after initial activation showed a significant peak broadening but this broadening did not last with the following cycling. The pulverized particle of the La(Ni3.8Al1.0Mn0.2)(x) alloys only presented cleaved surfaces, indicating that the pulverization mainly resulted from brittle fracture. The changes in hydrogen absorption/desorption properties induced by cycling were discussed by considering the peak broadening, lattice strain, defects and surface morphology. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[li, s. l.; chen, w. p.] s china univ technol, sch mech & automot engn, guangzhou 510640, peoples r china. [li, s. l.; chen, w.; luo, g.; han, x. b.; chen, d. m.; yang, k.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;li, sl (reprint author), s china univ technol, sch mech & automot engn, guangzhou 510640, peoples r china.;lishenlancn@163.com
关键词	Hydrogen Absorption/desorption Cycling Property Ab(5) Type Hydrogen Storage Alloy Surface Morphology X-ray-diffraction Hydrogen Storage Properties Lani5-based Alloys Hydriding Alloys Metal-hydrides Lani5 Degradation Stability Mmni4.5al0.5 Lani4.7al0.3
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60065
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. L. Li,W. Chen,G. Luo,et al. Cycling performance of La(Ni3.8Al1.0Mn0.2)(x)(x=0.94-1.0) alloys[J]. Journal of Alloys and Compounds,2012,532:68-71.
APA	S. L. Li.,W. Chen.,G. Luo.,X. B. Han.,D. M. Chen.,...&W. P. Chen.(2012).Cycling performance of La(Ni3.8Al1.0Mn0.2)(x)(x=0.94-1.0) alloys.Journal of Alloys and Compounds,532,68-71.
MLA	S. L. Li,et al."Cycling performance of La(Ni3.8Al1.0Mn0.2)(x)(x=0.94-1.0) alloys".Journal of Alloys and Compounds 532(2012):68-71.