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Open AccessArticle

A Commercial Carbonaceous Anode with a-Si Layers by Plasma Enhanced Chemical Vapor Deposition for Lithium Ion Batteries

1
Department of Materials Science and Engineering, National Formosa University, Yunlin 632, Taiwan
2
Department of Materials Science and Engineering, National Dong Hwa University, Hualien 974301, Taiwan
*
Author to whom correspondence should be addressed.
J. Compos. Sci. 2020, 4(2), 72; https://doi.org/10.3390/jcs4020072
Received: 12 May 2020 / Revised: 30 May 2020 / Accepted: 9 June 2020 / Published: 11 June 2020
(This article belongs to the Special Issue Graphene Oxide Composites)
In this study, we propose a mass production-able and low-cost method to fabricate the anodes of Li-ion battery. Carbonaceous anodes, integrated with thin amorphous silicon layers by plasma enhanced chemical vapor deposition, can improve the performance of specific capacity and coulombic efficiency for Li-ion battery. Three different thicknesses of a-Si layers (320, 640, and 960 nm), less than 0.1 wt% of anode electrode, were deposited on carbonaceous electrodes at low temperature 200 °C. Around 30 mg of a-Si by plasma enhanced chemical vapor deposition (PECVD) can improve the specific capacity ~42%, and keep coulombic efficiency of the half Li-ion cells higher than 85% after first cycle charge-discharge test. For the thirty cyclic performance and rate capability, capacitance retention can maintain above 96%. The thicker a-Si layers on carbon anodes, the better electrochemical performance of anodes with silicon-carbon composites we get. The traditional carbonaceous electrodes can be deposited a-Si layers easily by plasma enhanced chemical vapor deposition, which is a method with high potential for industrialization. View Full-Text
Keywords: lithium ion battery; silicon-carbon composites; anode; plasma enhanced chemical vapor deposition lithium ion battery; silicon-carbon composites; anode; plasma enhanced chemical vapor deposition
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MDPI and ACS Style

Lee, C.-Y.; Yeh, F.-H.; Yu, I.-S. A Commercial Carbonaceous Anode with a-Si Layers by Plasma Enhanced Chemical Vapor Deposition for Lithium Ion Batteries. J. Compos. Sci. 2020, 4, 72.

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