Effects of coprecipitated zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxide

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	Effects of coprecipitated zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxide
	H. Chen; J. M. Wang; T. Pan; H. M. Xiao; J. Q. Zhang; C. N. Cao
	2002
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	27 期号:5 页码:489-496
摘要	The effects of zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxides (LDHs) prepared by a coprecipitation method were studied. The experimental results showed that the addition of zinc in Ni/Al-LDHs improved the electrochemical performance of the samples such as discharge potential, cycle stability and reversibility. The maximum specific discharge capacity of 425 mAh g(-1) of nickel hydroxide was obtained for the Ni/Al-LDHs without zinc. The maximum discharge mediate potential of 413 mV and the lowest capacity deterioration rate of < 5% after 398 charge-discharge cycles at 1C rate were gained for the 6.4 wt% Zn-containing sample. The results of electrochemical impedance spectroscopy and powder X-ray diffraction measurements indicated that the advantageous performance of Ni/Al-LDHs with high zinc content resulted from the decrease of electron transfer resistance (R-t) and the number of cells per crystallite in the direction of c-axis and slow dissolution of zinc in alkaline solution. (C) 2002 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.
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
关键词	Ni/al-layered Double Hydroxides (Ldhs) Coprecipitated Zinc Electrochemical Performance Phase Structure Alkaline Secondary Cells Alpha-nickel Hydroxide Electrode Material Impedance Batteries Behavior Cobalt
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36238
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. Effects of coprecipitated zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxide[J]. International Journal of Hydrogen Energy,2002,27(5):489-496.
APA	H. Chen,J. M. Wang,T. Pan,H. M. Xiao,J. Q. Zhang,&C. N. Cao.(2002).Effects of coprecipitated zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxide.International Journal of Hydrogen Energy,27(5),489-496.
MLA	H. Chen,et al."Effects of coprecipitated zinc on the structure and electrochemical performance of Ni/Al-layered double hydroxide".International Journal of Hydrogen Energy 27.5(2002):489-496.