Enhanced Cycling Performance of Nanocrystalline Fe3O4/C as Anode Material for Lithium-Ion Batteries
Abstract:Fe3O4-carbon composite was prepared by the sol–gel method. The crystal structure, morphology, and phases present in the product were investigated by X-ray diffraction and by scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy and field-emission SEM. Electrochemical characterization was performed using constant current charge-discharge testing and electrochemical impedance spectroscopy. The Fe3O4/C electrode has high initial columbic efficiency (87%) and outstanding cycling performance (775.3 mAh g−1 after 90 cycles at a current density of 100 mA g−1).
Document Type: Research Article
Publication date: February 1, 2012
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