The Superior Surface Discharge Capacity of Core-Shell Tinoxide/Multi Walled Carbon Nanotube Nanocomposite Anodes for Li-Ion Batteries |
| H. Akbulut, M. Alaf and D. Gultekin
Sakarya University, Metallurgical and Materials Engineering, Esentepe Campus, 54187, Sakarya, Turkey |
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| In this study, tin/tinoxide/multiwalled carbon nanotube (Sn/SnO2/MWCNT) nanocomposites were produced as anode materials for Li-ion batteries by a two-step process. Metallic tin was evaporated onto free-standing MWCNT buckypapers having controlled porosity and subsequently rf plasma oxidized in Ar:O2 (1:1) gas mixture. Besides, Sn/SnO2 nanocomposites were produced in the same conditions onto stainless steel substrates to make a comparison. X-ray diffraction and scanning electron microscopy were used to determine the structure and morphology of the obtained nanocomposites. The discharge/charge tests, cyclic voltammetry and electrochemical impedance spectroscopy were carried out to characterize the electrochemical properties of these composites. Promising results were obtained in the tin based MWCNT nanocomposites for next-generation micro battery applications because of the high active surface area of the SnO2/MWCNT core-shell structures. |
DOI: 10.12693/APhysPolA.125.335 PACS numbers: 81.05.uj, 61.48.De, 82.47.Aa, 82.80.Fk |