In situ synthesis of SnO2 nanosheet/graphene composite as anode materials for lithium-ion batteries |
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Authors: | Hongdong Liu Jiamu Huang Chengjie Xiang Jia Liu Xinlu Li |
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Affiliation: | 1. College of Materials Science and Engineering, Chongqing University, Chongqing, 400045, People’s Republic of China
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Abstract: | A novel SnO2/graphene composite has been synthesized via an in situ chemical synthesis method, in which single crystal SnO2 nanosheets are uniformly grown on graphene support. The as-prepared products were characterized by X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, Thermogravimetric analyses and Nitrogen adsorption/desorption. When used as an anode material for lithium ion batteries, the SnO2/graphene composite exhibits an enhanced reversible lithium storage capacity and good cyclic performance. The first discharge and charge capacities are 1,366 and 975 mAh g?1, respectively. After 100 cycles, the reversible discharge capacity is still maintained at 451 mAh g?1 at the current densities of 100 mA g?1, indicating that it’s a promising anode material for high performance lithium ion batteries. |
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