Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75

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	Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75
	H. H. Cheng; H. G. Yang; S. L. Li; X. X. Deng; D. M. Chen; K. Yang
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	453 期号:1-2 页码:448-452
摘要	The effect of hydrogen absorption/desorption cycling on the hydrogen storage properties of LaNi4.25Al0.75 was investigated. The pressure-composition (PC) isotherms for absorption/desorption and absorption kinetics were measured at 363, 383 and 403 K, for both after initial activation and 1000 absorption/desorption cycles. The plateau pressures and storage capacity absorption kinetics were slightly changed after long-term cycles, while significant degradation of absorption kinetics was observed. Cycling could result in pulverization of the bulk alloy. The particle size distribution after 1000 cycles was narrower (0.36-103 mu m) compared to that after initial activation (0.78-301 mu m), with volume mean diameter decreasing from 34.81 to 11.34 mu m. The change of hydrogen absorption/desorption properties of LaNi4.25Al0.75 over 1000 cycles has been explained by considering the disproportionation property of LaNi4.25Al0.75, the pulverization phenomena and the impurities from charging hydrogen employed in cycling. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	[cheng, h. h.; li, s. l.; deng, x. x.; chen, d. m.; yang, k.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [yang, h. g.] china inst atom energy, beijing 102413, peoples r china. [cheng, h. h.; li, s. l.; deng, x. x.] chinese acad sci, grad sch, beijing 100049, peoples r china.;chen, dm (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;demin.chen.1@imr.ac.cn
关键词	Hydrogen Storage Alloy Metal Hydride Gas-solid Reactions Hydrogenation Cycling Hydriding Alloys Metal-hydrides Lani5 Degradation Lani4.7al0.3 Stability Impurity Mmni4.5al0.5 Oxygen H2o
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WOS记录号	WOS:000254899700082
引用统计	被引频次：55[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/321006/32687
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. H. Cheng,H. G. Yang,S. L. Li,et al. Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75[J]. Journal of Alloys and Compounds,2008,453(1-2):448-452.
APA	H. H. Cheng,H. G. Yang,S. L. Li,X. X. Deng,D. M. Chen,&K. Yang.(2008).Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75.Journal of Alloys and Compounds,453(1-2),448-452.
MLA	H. H. Cheng,et al."Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75".Journal of Alloys and Compounds 453.1-2(2008):448-452.