Electrochemical characteristics of a-Si thin film anode for Li-ion rechargeable batteries

Deposition of an amorphous Si (a-Si) thin film anode was carried out by a radio-frequency (rf) magnetron sputtering. In order to avoid mechanical disintegration of the Si electrodes, the Si was deposited on two types of Cu foil: normal Cu foil and Cu foil with a rough surface. The surface of the Cu...

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Bibliographic Details
Published in:Journal of power sources 2004-04, Vol.129 (2), p.270-274
Main Authors: Lee, Ki-Lyoung, Jung, Ju-Young, Lee, Seung-Won, Moon, Hee-Soo, Park, Jong-Wan
Format: Article
Language:English
Subjects:
Anode
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Li-ion rechargeable battery
Micro battery
Silicon
Thin film
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Summary:Deposition of an amorphous Si (a-Si) thin film anode was carried out by a radio-frequency (rf) magnetron sputtering. In order to avoid mechanical disintegration of the Si electrodes, the Si was deposited on two types of Cu foil: normal Cu foil and Cu foil with a rough surface. The surface of the Cu foil was roughened with sandpaper. The properties of Si film were observed by FESEM, Raman, XRD, AFM, CLSM and electrochemical performance was evaluated. It was believed that the rough foil helped the active Si material to maintain the electronic contact with the current collector during charging and discharging.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2003.10.013