文献类型：期刊文献

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

作者：Wang, Le-ping[1];Chen, Gang[1];Shen, Qi-xin[1];Li, Guo-min[1];Guan, Shi-you[2];Li, Bing[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shanghai Univ, Inst Sustainable Energy, Shanghai 200444, Peoples R China

年份：2018

卷号：25

期号：9

起止页码：1027

外文期刊名：INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS

收录：;EI(收录号：20183705800831);WOS:【SCI-EXPANDED(收录号:WOS:000444007300006)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 51474107) and the Opening Project Fund of Key Laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology (No. yy2016008).

语种：英文

外文关键词：SnCo alloy; nanowires; template; electrodeposition; ionic liquid

摘要：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 m. 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 mAhg(-1) after the first charge and discharge cycle and maintained capacities of about 654 mAhg-1 after 60 cycles and 539 mAhg(-1) after 80 cycles at a current density of 300 mAg(-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.