Superior cycle performance and high reversible capacity of SnO2/graphene composite as an anode material for lithium-ion batteries.
Superior cycle performance and high reversible capacity of SnO2/graphene composite as an anode material for lithium-ion batteries.
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SNO2/石墨烯复合材料作为锂离子电池的阳极材料的出色周期性能和高可逆能力。
DOI:
10.1038/srep09055
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发表时间:
2015-03-12
影响因子:
4.6
通讯作者:
Zhang J
中科院分区:
文献类型:
--
作者:
Liu L;An M;Yang P;Zhang J
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 demonstrates a stable cycle performance and high reversible capacity for lithium storage.
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影响因子:
17.1
作者:
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通讯作者:
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