A facile method for in-situ synthesis of SnO2/graphene as a high performance anode material for lithium-ion batteries

Abstract A facile, moderate, and environment-friendly method for in-situ preparation of SnO 2 /graphene nanocomposites (SnO 2 /GNs) was proposed. The structures and morphology as well as electrochemical behaviors of SnO 2 /GNs with varied proportions of SnO 2 and graphene were characterized by X-ray diffraction, Fourier transform infrared spectrometry, transmission electron microscopy and relevant electrochemical property tests. The results reveal that the ratios of SnO 2 to graphene have a significant effect on the structures and properties of SnO 2 /GNs. SnO 2 /GN-50 containing 50% SnO 2 delivers a high specific capacity of 540 mAh g −1 even after 90 cycles at a current density of 100 mA g −1 , which is attributed to the synergistic effect of a unique combination of SnO 2 nanoparticles and graphene sheets, indicating that SnO 2 /GNs might have a promising future as anode material in Li-ion batteries.

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