Influence of nanosized Ni(OH)2 addition on the electrochemical performance of nickel hydroxide electrode

被引:90
作者
Liu, XH [1 ]
Yu, L [1 ]
机构
[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
关键词
nickel hydroxide; nanometer; preparation; alkaline batteries; cyclic voltammogram; electrochemical performance;
D O I
10.1016/j.jpowsour.2003.10.006
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nanosized cathode material Ni(OH)(2) for alkaline batteries was prepared by converting the precursor of NiC2O4.2H2O in KOH water solution which contained Tween-80, and the precursor was obtained via the reaction between Ni(NO3)(2).6H2O and H2C2O4.2H2O in ethanol solvent. The products were characterized using X-ray diffraction (XRD), infrared absorption spectroscopy (IR), and transmission electron microscopy (TEM). The results showed that the as-prepared Ni(OH)2 sample by this method is beta(II)-type phase and its shape is spherical with the particle size from 5 to 35 nm. The electrochemical studies revealed that the 10% addition of nanosized Ni(OH)(2) to common microsized spherical Ni(OH)(2) can improve the electrochemical performance of the Ni(OH)(2) electrode. There exists approximately a 10% improvement in the utilization of the active material of the Ni(OH)(2) electrode with 10% nannosized Ni(OH)(2) addition in comparison with microsized spherical Ni(OH)(2) electrode. Nanosized Ni(OH)(2) may be a promising cathodic active material for alkaline rechargeable batteries. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:326 / 330
页数:5
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