High-Temperature Electrochemical Performance of Amorphous Nickel Hydroxide Codoped with Y and Mg

Chang Jiu Liu; Wei Shang; Shi Juan Chen

doi:10.4028/www.scientific.net/AMR.554-556.390

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High-Temperature Electrochemical Performance of Amorphous Nickel Hydroxide Codoped with Y and Mg

Abstract:

Amorphous nickel hydroxide codoped with Y and Mg was synthesized by micro-emulsion precipitation method combined with rapid freezing technique. The physical properties and micro-structural features of the prepared sample were characterized and high-temperature electrochemical performance was analyzed by cyclic voltammetry and charge/discharge tests, respectively. The results indicate that this amorphous nickel hydroxide codoped with Y and Mg has more structural defects and better thermal stability, therefore results in a relatively high specific capacity(332.46 mAh•g-1 at a charge/discharge rate of 0.2C) and a high middle discharge voltage of 1.265V at 60°C. Moreover, the Y and Mg codoped amorphous nickel hydroxide exhibits good electrochemical reaction reversibility and structural stability.

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Periodical:

Advanced Materials Research (Volumes 554-556)

Pages:

390-394

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.554-556.390

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Online since:

July 2012

Authors:

Chang Jiu Liu, Wei Shang*, Shi Juan Chen

Keywords:

Amorphous Nickel Hydroxide, High-Temperature Electrochemical Performance, Y and Mg Codoped

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