The effects of partial substitution of Fe and Co for Ni in the Mg1.75Al0.25Ni electrode alloy on electrochemical performances

	The effects of partial substitution of Fe and Co for Ni in the Mg1.75Al0.25Ni electrode alloy on electrochemical performances
	Wang, MH ; Zhang, LZ ; Zhang, Y ; Sun, LX ; Tan, ZC ; Xu, F ; Yuan, HT ; Zhang, T
刊名	international journal of hydrogen energy
	2006-04-01
卷号	31 期号:5 页码:621-625
关键词	Mg-based electrode alloys electrochemical performances solid diffusion method
英文摘要	in this paper, co and fe were selected as the partial substitution elements for ni to form mg1.75al0.25ni0.9x0.1 quaternary electrode alloys prepared by means of the solid diffusion method (dm) on the basis of the ternary mg1.75al0.25ni alloy. the xrd patterns exhibited that the quaternary alloys still possessed the main phase of mg3alni2 as that of the ternary mg1.75al0.25ni alloy by introducing the substitution elements co or fe. the electrochemical studies found that fe- or co-substituted quaternary alloy possessed larger discharge capacity and higher cycling stability than the mg1.75al0.25ni ternary alloy. cyclic voltammetry (cv) tests demonstrated that the additional fe and co could improve the electrocatalytic oxidation activity on the surface and also the discharge capacity of the mg1.75al0.25ni electrode alloy. anodic polarization curves indicated that the additional fe and co led the potentials shifting toward position direction and to a decrease of the corrosion current. electrochemical impedance spectroscopy (eis) revealed that the exchange current density decreases considerably with the augmentation of the cycle number. (c) 2005 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]	mg2ni alloy ; ti
收录类别	SCI
语种	英语
WOS记录号	WOS:000236683400009
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/140383]
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 116023, Peoples R China 2.Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China
推荐引用方式 GB/T 7714	Wang, MH,Zhang, LZ,Zhang, Y,et al. The effects of partial substitution of Fe and Co for Ni in the Mg1.75Al0.25Ni electrode alloy on electrochemical performances[J]. international journal of hydrogen energy,2006,31(5):621-625.
APA	Wang, MH.,Zhang, LZ.,Zhang, Y.,Sun, LX.,Tan, ZC.,...&Zhang, T.(2006).The effects of partial substitution of Fe and Co for Ni in the Mg1.75Al0.25Ni electrode alloy on electrochemical performances.international journal of hydrogen energy,31(5),621-625.
MLA	Wang, MH,et al."The effects of partial substitution of Fe and Co for Ni in the Mg1.75Al0.25Ni electrode alloy on electrochemical performances".international journal of hydrogen energy 31.5(2006):621-625.