Effect of long-term hydrogen absorption/desorption cycling on hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3)

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	Effect of long-term hydrogen absorption/desorption cycling on hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3)
	S. L. Li; W. Chen; D. M. Chen; K. Yang
	2009
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	474 期号:1-2 页码:164-168
摘要	The effect of a long-term hydrogen absorption/desorption cycling up to 2000 cycles on the hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3) alloy was investigated. The pressure-composition (PC) isotherms for absorption/desorption and absorption kinetics were measured at 338 K, 353 K and 368 K both after initial activation and 2000 cycles. X-ray diffraction analysis revealed that the alloy had a homogeneous hexagonal CaCu(5) type structure and kept this structure even after 2000 hydrogen absorption/desorption cycles. It is found that the absorption/desorption plateau pressures were lowered, the storage capacity and the absorption kinetics were slightly degraded and the hysteresis loss was increased at all the investigated temperatures after 2000 cycles. It is also found that the particle size after 2000 cycles was much smaller compared to that after initial activation. The change of the hydrogen absorption/desorption properties of the alloy after 2000 cycles has been explained by considering the crystal structure, disproportionation property, pulverization of the sample and the impurities in the charging hydrogen employed in cycling. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[li, s. l.; chen, w.; chen, d. m.; yang, k.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [li, s. l.; chen, w.] 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 Absorbing Materials Metal Hydrides Gas-solid Reactions Metal-hydride Electrodes Thermal-conductivity Lani5 Degradation Alloys Performance Absorption Mmni4.5al0.5 Simulation Behavior
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WOS记录号	WOS:000266952000036
引用统计	被引频次：13[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/321006/32031
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,D. M. Chen,et al. Effect of long-term hydrogen absorption/desorption cycling on hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3)[J]. Journal of Alloys and Compounds,2009,474(1-2):164-168.
APA	S. L. Li,W. Chen,D. M. Chen,&K. Yang.(2009).Effect of long-term hydrogen absorption/desorption cycling on hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3).Journal of Alloys and Compounds,474(1-2),164-168.
MLA	S. L. Li,et al."Effect of long-term hydrogen absorption/desorption cycling on hydrogen storage properties of MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3)".Journal of Alloys and Compounds 474.1-2(2009):164-168.