期刊
MATERIALS LETTERS
卷 84, 期 -, 页码 101-103出版社
ELSEVIER
DOI: 10.1016/j.matlet.2012.06.049
关键词
Lithium-ion batteries; Thin films; Energy storage and conversion; Adhesion; Specific capacity
资金
- National Research Foundation of Korea (NRF)
- Korea Government Ministry of Education, Science and Technology (MEST) [2010-0013703]
- National Research Foundation of Korea [2010-0013703] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A nanoscaled Sn-Cu alloy film material is intended to improve charge-discharge capacities with respect to the negative electrode in Li-ion batteries. Sn-Cu alloy film electrodes are prepared using sulfate electrolyte by a pulse current plating method. Pulse duty cycles of 10% at a frequency of 10 Hz with a peak current density 1 A dm(-2) are employed. The electrochemical discharge-charge capacities of the lithium insertion process and the reversible charging process are 1058 mA h g(-1) and 612 mA h g(-1) in the initial cycling, respectively. Also, Coulombic efficiency was 87.2% at the end of the 30th cycle. Thus, nanoscaled Sn-Cu alloy film electrodes are good candidates for anode material in Li-ion rechargeable batteries. (C) 2012 Elsevier B.V. All rights reserved.
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