A novel Fe3O4-SnO2-graphene ternary nanocomposite as an anode material for lithium-ion batteries

作者：Lian, Peichao; Liang, Shuzhao; Zhu, Xuefeng; Yang, Weishen; Wang, Haihui^*

来源：Electrochimica Acta, 2011, 58(1): 81-88.

DOI：10.1016/j.electacta.2011.08.088

• Graphene sheets
• Fe3O4
• SnO2
• Nanocomposite
• Lithium-ion batteries

Fe3O4-SnO2-graphene ternary nanocomposite was firstly synthesized by using a gas-liquid interfacial synthesis approach. The as-prepared nanocomposite was characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The scanning electron microscopy and transmission electron microscopy characterization results indicate that Fe3O4-SnO2 nanoparticles were successfully deposited onto the surfaces of graphene sheets during the gas-liquid interfacial reaction process. The electrochemical performances were evaluated by using coin-type cells vs. metallic lithium. The Fe3O4-SnO2-graphene nanocomposite exhibits a high reversible specific capacity of 1198 mAh g(-1) in the 115th cycle at a specific current of 100 mA g(-1) and good rate capability, even at a high specific current of 2000 mA g(-1), the reversible capacity is still as high as 521 mAh g(-1). The good electrochemical performance of the Fe3O4-SnO2-graphene nanocomposite can be attributed to the synergistic effect existing not only between the graphene and metal oxides but also between the Fe3O4 and SnO2.

• 出版日期2011-12-30
• 单位华南理工大学; 中国科学院; 中国科学院大连化学物理研究所; 催化基础国家重点实验室