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Structure and Electrochemical Performance of Amorphous Nickel Hydroxide Doped with La and Al

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Abstract:

Amorphous nickel hydroxide powders doped with rare earth La3+ and Al3+ were synthesized by the combined chemical precipitation and rapid freezing method. The microstructure of the samples was characterized by XRD and Raman spectra. The electrochemical performance of the prepared samples was analyzed by electrochemical impedance spectroscopy and charge-discharge tests. The results showed that this amorphous nickel hydroxide codoped with La3+ and Al3+ had more structural defects than those of the undoped amorphous nickel hydroxide and La3+ singly doped amorphous nickel hydroxide. These abundant structural defects with La3+ and Al3+ codoped amorphous nickel hydroxide decreased the electrochemical impedance spectroscopy and improved the electrochemical reversibility of the amorphous nickel hydroxide electrode.

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Info:

Periodical:

Materials Science Forum (Volumes 663-665)

Pages:

1217-1220

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.663-665.1217

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Online since:

November 2010

Authors:

Chang Jiu Liu, Chun Xiao Xing, Shi Juan Chen, Yan Wei Li

Keywords:

Amorphous, Doping, Electrochemical Performance, Nickel Hydroxide, Structure

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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