Published January 1, 2016
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Sn/SnO2/Mwcnt composite anode and electrochemical impedance spectroscopy studies for Li-ion batteries
- 1. Bilecik Seyh Edebali Univ, Fac Engn, Dept Met & Mat Engn, Gulumbe Campus, TR-11210 Bilecik, Turkey
- 2. Sakarya Univ, Fac Engn, Dept Met & Mat Engn, Esentepe Campus, Sakarya, Turkey
Description
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:O-2(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.
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