A novel composite with highly dispersed Fe3O4 nanocrystals on ordered mesoporous carbon as an anode for lithium ion batteries

作者：Wu Feng; Huang Rong; Mu Daobin^*; Shen Xueyang; Wu Borong

来源：Journal of Alloys and Compounds, 2014, 585: 783-789.

DOI：10.1016/j.jallcom.2013.10.007

• Magnetite
• Ordered mesoporous carbon
• Nano-structured composite
• Anode
• Lithium ion batteries

A nano-structured composite with Fe3O4 nanocrystals highly dispersed on ordered mesoporous carbon (here, CMK-3) is successfully synthesized by a facile wet impregnation method, and its lithium storage properties are investigated as anode material in this work. The uniform loading of Fe3O4 crystals in size around 10 nm are well distributed on the ordered mesoporous carbon host, as characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and nitrogen adsorption-desorption isotherms. The composite Fe3O4@CMK-3 exhibits a large reversible capacity and good cycle stability with a retention value of 910 mA h g(-1) at a current density of 200 mA g(-1) over 50 cycles, as well as a capacity of 670 mA h g(-1) even up to 100 cycles at 1000 mA g(-1). The fascinating electrochemical performance may originate from the unique architecture for the fine Fe3O4 nanocrystals together with the interconnected carbon conducting network.

• 出版日期2014-2-5
• 单位北京理工大学