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Sn/SnO2/Mwcnt composite anode and electrochemical impedance spectroscopy studies for Li-ion batteries |
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| Authors: | Mirac Alaf Ubeyd Tocoglu Fuat Kayis Hatem Akbulut |
| Affiliation: | 1. Department of Metallurgy and Materials Engineering, Engineering Faculty, Bilecik Seyh Edebali University, Gulumbe Campus, Bilecik, Turkey;2. Department of Metallurgy and Materials Engineering, Engineering Faculty, Sakarya University, Esentepe Campus, Sakarya, Turkey |
| Abstract: | Tin/tinoxide/multi-walled carbon nanotube (Sn/SnO2/MWCNT) core-shell structure nanocomposite anode is produced by thermal evaporation and subsequent plasma oxidation with using MWCNT buckypaper. Metallic tin is evaporated onto free-standing and flexible MWCNT buckypaper having controlled porosity and subsequent RF plasma oxidized in Ar:O2(1:1) gas mixture. X-ray diffraction and scanning electron microscopy are used to determine the structure and morphology of the obtained nanocomposite. The electrochemical characteristics of the nanocomposite anode are examined by using electrochemical impedance spectroscopy and galvanostatic charge–discharge experiments. Family of Nyquist plots during first discharge process are obtained and studied at different voltage values. |
| Keywords: | tinoxide electrochemical impedance spectroscopy Li-ion battery carbon nanotube |