Facile synthesis of SnO2/graphene nanocomposite as anode materials for lithium-ion batteries

• 作 者: LI Hai LU Chun-xiang ZHANG Bao-ping
• 机 构: National Engineering Laboratory for Carbon Fiber Technology,Institute of Coal Chemistry,Chinese Acad
• 出 处: 第十一届全国新型炭材料学术研讨会
• 发表日期: 2013年5期
• 关键词: SnO2 graphene lithium-ion batteries

　　A facile synthesis approach has been developed to prepare SnO2/graphene nanocomposite.The as-prepared nanocom-posite was investigated by X-ray diffraction,field emission scanning electron microscopy,transmission electron microscope,and thermogravimetric analysis.X-ray diffraction characteration confirmed the lattice structure of SnO2 nanoparticles.Field emission scanning electron microscopy and transmission electron microscope observation revealed the uniform distribution of SnO2 nanoparti-cles on graphene nanosheets and intimate interactions between graphene and SnO2 nanoparticles.The electrochemical performance of the SnO2/graphene nanocomposite as anode material was measured by galvanostatic charge/discharge cycling.The as-prepared nanocomposite delivered a reversible capacity of 970 mAh/g in the first cycle and 639 mAh/g after 50 cycles at a current density of 50 mA/g,indicating excellent cycling performance.The nanocomposite also exhibited good rate capability.The electrochemical test results show that the as-prepared SnO2/graphene nanocomposite is a promising anode material for lithium-ion batteries.