Direct electrodeposition of ionic liquid-based template-free SnCo alloy nanowires as an anode for Li-ion batteries
| Autor: | Bing Li, Qixin Shen, Shi-you Guan, Guo-min Li, Gang Chen, Le-ping Wang |
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| Rok vydání: | 2018 |
| Předmět: |
Battery (electricity)
Materials science Alloy Nanowire 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Chloride Ion chemistry.chemical_compound Geochemistry and Petrology Materials Chemistry medicine Mechanical Engineering Metals and Alloys 021001 nanoscience & nanotechnology 0104 chemical sciences Anode chemistry Chemical engineering Mechanics of Materials Ionic liquid engineering 0210 nano-technology Current density medicine.drug |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 25:1027-1034 |
| ISSN: | 1869-103X 1674-4799 |
| DOI: | 10.1007/s12613-018-1653-0 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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