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HomeKey Engineering MaterialsKey Engineering Materials Vol. 727Preparation of Co-B Alloy with the Assistance of...

Preparation of Co-B Alloy with the Assistance of the Sonication and its Electrochemical Properties

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Abstract:

In order to enhance the electrochemical properties of Co-B alloys used as negative electrode materials of alkaline rechargeable batteries, Co-B alloy was successfully prepared by a chemical reduction method with the assistance of the sonication. The phase structure and the surface morphology of the as-prepared Co-B alloys were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and nitrogen physisorption. Moreover, the electrochemical performance was characterized by galvonostatic charge-discharge tests, electrochemical impedance spectroscopy (EIS) and anodic polarization (AP). Co-B alloy prepared with the assistance of the sonication consists of small particles with a uniform distribution. The electrochemical measurements showed that at a discharge current density of 100 mA/g, the initial discharge capacity was 858.1 mAh/g and the discharge capacity was 322.6 mA/g even at the 100th cycle with the capacity retention of 37.6%.

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Functional Materials Research II

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

751-755

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.751

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Online since:

January 2017

Authors:

Wei Zhao, Yi Lin Liao, Jian Ling Huang, Hai Liang Chu, Shu Jun Qiu*, Yong Jin Zou, Cui Li Xiang, Fen Xu, Li Xian Sun

Keywords:

Co-B Alloy, Electrochemical Performance, Secondary Alkaline Battery, Sonication

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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