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Volume 25 Issue 9
Sep.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 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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研究论文

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

  • School of Materials science and Engineering, East China University of Science and Technology, Shanghai 200237, China

  • Institute for Sustainable Energy, Shanghai University, Shanghai 200444, China

  • 通讯作者:

    Bing Li    E-mail: bingli@ecust.edu.cn

  • 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.
    • Research Article

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

    + Author Affiliations
      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.
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