A Commercial Carbonaceous Anode with a-Si Layers by Plasma Enhanced Chemical Vapor Deposition for Lithium Ion Batteries
| Autor: | Ing Song Yu, Chao Yu Lee, Fa Hsing Yeh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
anode Materials science chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrochemistry lcsh:Technology 01 natural sciences silicon-carbon composites Lithium-ion battery Plasma-enhanced chemical vapor deposition lcsh:Science Engineering (miscellaneous) lcsh:T plasma enhanced chemical vapor deposition 021001 nanoscience & nanotechnology 0104 chemical sciences Anode chemistry Chemical engineering Electrode Ceramics and Composites lithium ion battery lcsh:Q Lithium 0210 nano-technology Faraday efficiency |
| Zdroj: | Journal of Composites Science; Volume 4; Issue 2; Pages: 72 Journal of Composites Science, Vol 4, Iss 72, p 72 (2020) |
| ISSN: | 2504-477X |
| DOI: | 10.3390/jcs4020072 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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