Direct electrodeposition of ionic liquid-based template-free SnCo alloy nanowires as an anode for Li-ion batteries

Le-ping Wang; Gang Chen; Qi-xin Shen; Guo-min Li; Shi-you Guan; Bing Li

doi:10.1007/s12613-018-1653-0

Volume 25 Issue 9

Sep. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(9): 1027-1034

Le-ping Wang, Gang Chen, Qi-xin Shen, Guo-min Li, Shi-you Guan, and Bing Li, Direct electrodeposition of ionic liquid-based template-free SnCo alloy nanowires as an anode for Li-ion batteries, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1027-1034. https://doi.org/10.1007/s12613-018-1653-0

Cite this article as:

Le-ping Wang, Gang Chen, Qi-xin Shen, Guo-min Li, Shi-you Guan, and Bing Li, Direct electrodeposition of ionic liquid-based template-free SnCo alloy nanowires as an anode for Li-ion batteries, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1027-1034. https://doi.org/10.1007/s12613-018-1653-0

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Research Article

Direct electrodeposition of ionic liquid-based template-free SnCo alloy nanowires as an anode for Li-ion batteries

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Corresponding author:
Bing Li E-mail: bingli@ecust.edu.cn
Received: 11 January 2018; Revised: 16 April 2018; Accepted: 19 April 2018

Abstract

Abstract

SnCo alloy nanowires were successfully electrodeposited from SnCl₂-CoCl₂-1-ethyl-3-methylimidazolium chloride (EMIC) ionic liquid without a template. The nanowires were obtained from the molar ratio of 5:40:60 for SnCl₂:CoCl₂:EMIC at -0.55 V and showed a minimum diameter of about 50 nm and lengths of over 20 μm. The as-fabricated SnCo nanowires were about 70 nm in diameter and featured a Sn/Co weight ratio of 3.85:1, when used as an anode for a Li-ion battery, they presented respective specific capacities of 687 and 678 mAh·g^-1 after the first charge and discharge cycle and maintained capacities of about 654 mAh·g^-1 after 60 cycles and 539 mAh·g^-1 after 80 cycles at a current density of 300 mA·g^-1. Both the nanowire structure and presence of elemental Co helped buffer large volume changes in the Sn anode during charging and discharging to a certain extent, thereby improving the cycling performance of the Sn anode.
- SnCo alloy;
- nanowires;
- template;
- electrodeposition;
- ionic liquid

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References

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