Physicochemical properties and electrochemical performance of Al-substituted alpha-Ni-(OH)(2) with additives for Ni-metal hydride batteries

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	Physicochemical properties and electrochemical performance of Al-substituted alpha-Ni-(OH)(2) with additives for Ni-metal hydride batteries
	H. Chen; J. M. Wang; T. Pan; Y. L. Zhao; J. Q. Zhang; C. N. Cao
	2003
发表期刊	Journal of the Electrochemical Society
ISSN	0013-4651
卷号	150 期号:11 页码:A1399-A1404
摘要	Al-substituted alpha-Ni(OH)(2) coprecipitated with the additives Mg2+ and Co2+ was prepared by a complexation-coprecipitation method. The physical properties of Al-substituted alpha-Ni(OH)(2) samples containing different amounts of Mg2+ or Co2+ were examined by X-ray diffraction, AES and ICP. The effects of Mg2+ and Co2+ on the electrochemical performance of Al-substituted alpha-Ni(OH)(2) such as charge-discharge and diffusion coefficient of the proton (DH+) measured by current pulse relaxation and cycle life were investigated. The results show that the addition of Mg2+ increases the crystal cell parameters and the charge and discharge potentials and decreases the electrochemical polarization. A higher charge efficiency and cycle life are obtained by the addition of Co2+. The addition of both Mg2+ and Co2+ improves DH+ and the stability in alkaline solution at high temperature. The DH+ and R-t of alpha-Ni(OH)(2) electrode reach their maximum and minimum values at about 50% depth of discharge (DOD) and 75% DOD, respectively. (C) 2003 The Electrochemical Society.
部门归属	zhejiang univ, dept chem, hangzhou 310027, peoples r china. chinese state key lab corros & protect, shenyang 110015, peoples r china.;chen, h (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china
关键词	Rechargeable Alkaline Batteries Nickel-hydroxide Electrodes Layered Double Hydroxide Positive Electrode Secondary Cells Active Material Behavior Cobalt Zinc
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35798
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Chen,J. M. Wang,T. Pan,et al. Physicochemical properties and electrochemical performance of Al-substituted alpha-Ni-(OH)(2) with additives for Ni-metal hydride batteries[J]. Journal of the Electrochemical Society,2003,150(11):A1399-A1404.
APA	H. Chen,J. M. Wang,T. Pan,Y. L. Zhao,J. Q. Zhang,&C. N. Cao.(2003).Physicochemical properties and electrochemical performance of Al-substituted alpha-Ni-(OH)(2) with additives for Ni-metal hydride batteries.Journal of the Electrochemical Society,150(11),A1399-A1404.
MLA	H. Chen,et al."Physicochemical properties and electrochemical performance of Al-substituted alpha-Ni-(OH)(2) with additives for Ni-metal hydride batteries".Journal of the Electrochemical Society 150.11(2003):A1399-A1404.