Tin dioxide/carbon nanotube composites with high uniform SnO2 loading as anode materials for lithium ion batteries

Abstract SnO 2 /multi-walled carbon nanotube (MWCNT) composites were prepared by the solvothermal method and subsequent heat treatment at 360 °C. The samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). Results on the higher SnO 2 content composite sample indicate that a uniform layer of SnO 2 nanocrystals with crystal size around 5 nm was deposited on the surface of the carbon nanotubes. The composite demonstrates a reversible lithium storage capacity of 709.9 mAh g −1 at the first cycle and excellent cyclic retention up to 100 cycles as anode for lithium ion batteries.

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