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Metals 2016, 6(11), 269; doi:10.3390/met6110269

The Co-B Amorphous Alloy: A High Capacity Anode Material for an Alkaline Rechargeable Battery

Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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Academic Editor: Hugo F. Lopez
Received: 29 August 2016 / Revised: 17 October 2016 / Accepted: 3 November 2016 / Published: 7 November 2016
(This article belongs to the Special Issue Amorphous Alloys and Related Transitions)
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Abstract

The Co-B amorphous alloys were prepared via a chemical reduction method by sodium borohydride, using three different cobalt salts (CoCl2·6H2O, CoSO4·7H2O, and Co(NO3)2·6H2O) as sources of cobalt. As anode materials in alkaline rechargeable batteries, the Co-B alloy prepared from CoCl2·6H2O has a maximum specific discharge capacity of 844.6 mAh/g, and 306.4 mAh/g is retained even after 100 cycles at a discharge current of 100 mA/g. When Co(NO3)2·6H2O is used as a raw material, the formation of Co3(BO3)2 worsens the electrochemical properties of the sample, i.e., a maximum capacity of only 367.0 mAh/g. View Full-Text
Keywords: amorphous materials; energy storage and conversion; rechargeable battery; anode amorphous materials; energy storage and conversion; rechargeable battery; anode
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Qiu, S.; Huang, J.; Chu, H.; Zou, Y.; Xiang, C.; Yan, E.; Xu, F.; Sun, L. The Co-B Amorphous Alloy: A High Capacity Anode Material for an Alkaline Rechargeable Battery. Metals 2016, 6, 269.

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