3 years ago

In-situ synthesized SnO2 nanorod/reduced graphene oxide low-dimensional structure for enhanced lithium storage.

Lixin Chen, Chuntao Wang, Meng Li, Xiulin Fan, Jiayi Zhong, Xuezhang Xiao, Yiwen Zhang, Wei Zhang, Junpeng Li
A unique morphology of SnO2 nanorod (NR)/reduced graphene oxide (RGO) composite has been synthesized by in-situ hydrothermal method, which is used as anode material for lithium-ion batteries. The SnO2 NR adhering on the RGO exhibit a length of 250-400 nm and diameter of 60-80 nm without any obviously aggregation. The initial discharge/charge capacities of the SnO2 NR/RGO composite are 1761.3 mAh g-1 and 1233.1 mAh g-1 with coulombic efficiency (CE) of 70 % under the current density of 200 mA g-1, and finally keep at 1101 mAh g-1 after the 50 cycles. The rate capability of the SnO2 NR/RGO is also improved compare to that of bare SnO2 NR. The superior electrochemical performance is ascribed to the special morphology of SnO2 NR that plays a role in shorting the transmission path and the sheet-like 2-D graphene which remits the agglomeration of SnO2 and enhances the conductivity during the electrochemical reaction of SnO2 NR/RGO.

Publisher URL: http://doi.org/10.1088/1361-6528/aaa72c

DOI: 10.1088/1361-6528/aaa72c

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