Effect of La Partial Substitution for Zr on the Structural and Electrochemical Properties of Ti0.17Zr0.08-xLaxV0.35Cr0.1Ni0.3 (x = 0 - 0.04) Electrode Alloys (vol 34, pg 17, 2009)

	Effect of La Partial Substitution for Zr on the Structural and Electrochemical Properties of Ti0.17Zr0.08-xLaxV0.35Cr0.1Ni0.3 (x = 0 - 0.04) Electrode Alloys (vol 34, pg 17, 2009)
	Qiu, Shu-Jun 1; Chu, Hai-Liang 1; Zhang, Jian 1; Zhang, Yao 1; Sun, Li-Xian 1; Xu, Fen 2; Sun, Da-Lin 3; Ouyang, Liu-Zhang 4; Zhu, Min 4; Grolier, J. -P. E.5
刊名	international journal of hydrogen energy
	2009-10-01
卷号	34 期号:20 页码:8783-8783
关键词	Hydrogen storage alloy Alloy electrode Activation property Electrochemical kinetics
通讯作者	孙立贤 ; 徐芬
产权排序	1;1
英文摘要	in order to elucidate the effects of metallic la addition on the performance of ti-v-based hydrogen storage alloys as negative electrodes for nickel/metal-hydrides batteries, ti0.17zr0.08-xlaxv0.35cr0.1ni0.3 (x = 0, 0.01, 0.02, 0.03, 0.04) alloys were prepared and their structural and electrochemical properties were systematically investigated. x-ray powder diffraction (xrd) results showed that these alloys were mainly consisted of c14 laves phase with a hexagonal structure, v-based solid solution phase with bcc structure and c15 laves phase with a cubic structure. the electrochemical measurements indicated that the maximum discharge capacities of the alloy electrodes decreased from 337.3 mah/g (x = 0) to 262.5 mah/g (x = 0.04) and that the substitution of zr with metallic la in the alloys had no obvious effect on the capacity retention rate (c-100/c-max, c-200/c-max). the high-rate dischargeability (hrd) of the alloy electrodes at the discharge current density of 800 ma/g first increased from 69.01% (x = 0) to 71.13% (x = 0.01) and then decreased to 65.35% (x = 0.04). in brief, the hrd was improved with an optimum la content in the alloy (x = 0.01). the electrochemical hydrogen kinetics of the alloy electrodes was further studied by means of electrochemical impedance spectroscopy, linear polarization, anodic polarization and potential-step measurements. the charge-transfer reaction resistance r-ct decreased for x = 0.01 with respect to x = 0 and then increased with the increase of x, while exchange current density i-o, limiting current density i-l and hydrogen diffusion coefficient d were all increased for x = 0.01 with respect to x = 0 and then decreased with the increase of x. the optimal content of la in ti0.17zr0.08-xlaxv0.35cr0.1ni0.3 alloys for negative electrodes in alkaline rechargeable secondary batteries is x = 0.01 in this study. (c) 2009 international association for hydrogen energy. published by elsevier ltd. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; electrochemistry ; energy & fuels
研究领域[WOS]	chemistry ; electrochemistry ; energy & fuels
关键词[WOS]	hydrogen storage alloys ; metal hydride electrodes ; alkaline aqueous-solution ; solid-solution alloys ; network structure ; surface-treatment ; ti ; microstructure ; performances ; composites
收录类别	SCI
原文出处	false
语种	英语
WOS记录号	WOS:000271177200036
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/101829]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Peoples R China 3.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China 4.S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China 5.Univ Clermont Ferrand, Lab Thermodynam Solut & Polymers, F-63177 Aubiere, France 6.Natl Inst Stand & Technol, Phys & Chem Properties Div 838, Boulder, CO 80305 USA
推荐引用方式 GB/T 7714	Qiu, Shu-Jun,Chu, Hai-Liang,Zhang, Jian,et al. Effect of La Partial Substitution for Zr on the Structural and Electrochemical Properties of Ti0.17Zr0.08-xLaxV0.35Cr0.1Ni0.3 (x = 0 - 0.04) Electrode Alloys (vol 34, pg 17, 2009)[J]. international journal of hydrogen energy,2009,34(20):8783-8783.
APA	Qiu, Shu-Jun.,Chu, Hai-Liang.,Zhang, Jian.,Zhang, Yao.,Sun, Li-Xian.,...&Frenkel, Michael.(2009).Effect of La Partial Substitution for Zr on the Structural and Electrochemical Properties of Ti0.17Zr0.08-xLaxV0.35Cr0.1Ni0.3 (x = 0 - 0.04) Electrode Alloys (vol 34, pg 17, 2009).international journal of hydrogen energy,34(20),8783-8783.
MLA	Qiu, Shu-Jun,et al."Effect of La Partial Substitution for Zr on the Structural and Electrochemical Properties of Ti0.17Zr0.08-xLaxV0.35Cr0.1Ni0.3 (x = 0 - 0.04) Electrode Alloys (vol 34, pg 17, 2009)".international journal of hydrogen energy 34.20(2009):8783-8783.