High Rate Capability Core Shell SnO2/Multiwall Carbon Nanotube Nano Composite Electrodes for Li-Ion Batteries

作者：Akbulut Hatem^*; Guler Mehmet Oguz

来源：Journal of Nanoscience and Nanotechnology, 2015, 15(9): 6973-6980.

DOI：10.1166/jnn.2015.10534

• SnO2
• MWCNT Buckypaper
• Reactive Magnetron Sputtering
• Li-Ion Battery

In this study, core shell SnO2/MWCNT nanocomposites were produced as a high rate anode material for Li-ion batteries via two steps. Firstly, MWCNT based buckypapers were produced via vacuum filtration techniques. Then, a uniform layer of tin oxide nanocrystals which consist of highly homogenous SnO2 having average mean grain sizes of 7-14 nm was deposited onto the surfaces of buckypapers. The as-prepared nanocomposites were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), galvanostatic charging and discharging and electrochemical impedance spectroscopy (EIS) tests. As anode materials for Li-ion batteries, the nanocomposites showed excellent cyclic retention, with the high specific capacity of 314 mAh g(-1) up to 100 cycles. The special hybrid core shell structure of the as produced nanocomposites are served as electron conductors and volume buffers in the anode electrodes.

• 出版日期2015-9