Electrochemical performance of Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries

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	Electrochemical performance of Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries
	H. Chen; J. M. Wang; Y. L. Zhao; J. Q. Zhang; C. N. Cao
	2005
发表期刊	Journal of Solid State Electrochemistry
ISSN	1432-8488
卷号	9 期号:6 页码:421-428
摘要	Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries was prepared by a chemical coprecipitation method. The structures were characterized by X-ray diffraction and scanning electron microscopy, and the electrochemical performance, including charge-discharge behavior, the proton diffusion coefficient (DH+), and the cycle life, was investigated in detail. The results showed that the charge-discharge potentials of Zn-substituted beta-Ni(OH)(2) are much higher than those of Zn-substituted alpha-Ni(OH)(2). For a single alpha (for 30.5-48.4% Zn content) or a single beta (from 0 to 9.3% Zn content) phase in the sample, the discharge potentials increase with the increase of Zn content. However, when there is an alpha and beta phase mixture in the sample, the discharge potential decreases with an increase of Zn content. The DH+ values of Zn 0% and Zn 38.1% samples measured by the current-pulse relaxation method are much lower than those of Zn 9.3% and Zn 19.6% samples. DH+ of all the samples decreases with an increase of the depth of discharge. The effects of different Zn contents on the charge-discharge potentials of the nickel electrodes can be attributed to the differences of the electrochemical and diffusion polarization.
部门归属	zhejiang univ, dept chem, hangzhou 310027, peoples r china. chinese state key lab corros & protect, shenyang 110015, peoples r china.;wang, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;wjm@cmsce.zju.edu.cn
关键词	Zn-substituted Alpha-ni(Oh)(2) Electrochemical Performance Diffusion Coefficient Of Proton Nickel-hydroxide Electrodes Positive Material Cells
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34808
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,Y. L. Zhao,et al. Electrochemical performance of Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries[J]. Journal of Solid State Electrochemistry,2005,9(6):421-428.
APA	H. Chen,J. M. Wang,Y. L. Zhao,J. Q. Zhang,&C. N. Cao.(2005).Electrochemical performance of Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries.Journal of Solid State Electrochemistry,9(6),421-428.
MLA	H. Chen,et al."Electrochemical performance of Zn-substituted Ni(OH)(2) for alkaline rechargeable batteries".Journal of Solid State Electrochemistry 9.6(2005):421-428.