Superior cycle performance and high reversible capacity of SnO2/graphene composite as an anode material for lithium-ion batteries

Scientific Reports
Lilai LiuJinqiu Zhang

Abstract

SnO2/graphene composite with superior cycle performance and high reversible capacity was prepared by a one-step microwave-hydrothermal method using a microwave reaction system. The SnO2/graphene composite was characterized by X-ray diffraction, thermogravimetric analysis, Fourier-transform infrared spectroscopy, Raman spectroscopy, scanning electron microscope, X-ray photoelectron spectroscopy, transmission electron microscopy and high resolution transmission electron microscopy. The size of SnO2 grains deposited on graphene sheets is less than 3.5 nm. The SnO2/graphene composite exhibits high capacity and excellent electrochemical performance in lithium-ion batteries. The first discharge and charge capacities at a current density of 100 mA g(-1) are 2213 and 1402 mA h g(-1) with coulomb efficiencies of 63.35%. The discharge specific capacities remains 1359, 1228, 1090 and 1005 mA h g(-1) after 100 cycles at current densities of 100, 300, 500 and 700 mA g(-1), respectively. Even at a high current density of 1000 mA g(-1), the first discharge and charge capacities are 1502 and 876 mA h g(-1), and the discharge specific capacities remains 1057 and 677 mA h g(-1) after 420 and 1000 cycles, respectively. The SnO2/graphene composite...Continue Reading

References

Mar 3, 2007·Nature Materials·A K Geim, K S Novoselov
Jun 23, 2009·Science·A K Geim
Jul 8, 2009·Journal of the American Chemical Society·Hailiang WangHongjie Dai

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Citations

Oct 1, 2015·ACS Applied Materials & Interfaces·Zhefei LiJian Xie
Dec 24, 2017·Nanoscale Research Letters·Stefanos ChaitoglouEnric Bertran
Jul 18, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Kuang LiangAn-Wu Xu
Dec 1, 2015·Applied Physics Letters·Ting XieRatan Debnath
Feb 14, 2021·Colloids and Surfaces. B, Biointerfaces·Zhiguang YangZhisheng Yu
Apr 14, 2021·ACS Applied Materials & Interfaces·Ruicong ZhouWei Huang

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Methods Mentioned

BETA
X-ray
transmission electron microscopy
electron diffraction

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