Abstract
Engineering and preparation of nanostructured ferroferric oxide/carbon composites (Fe3O4/C) have been extensively considered as enabling Fe3O4-based anode materials for improvement in lithium storage performance. However, the general synthesis strategies for nanostructured Fe3O4/C composites are involved in hydrothermal treatment and application of various raw materials containing reagents and solvents, which are not conducive to environmental protection and energy conservation. Herein, a characteristic Fe3O4/C anode material with a superior electrochemical performance has been constructed by a extremely simple and relatively green route. It consists of smaller secondary nanoparticles and conformal carbon coating, and are full of pores. Consequently, the as-constructed Fe3O4/C shows an outstanding cycling stability as well as high specific capacities, releasing 896.4 mAh g−1 after 300 cycles at 200 mA g−1 as well as 455.3 mAh g−1 after even 500 cycles at 1000 mA g−1. Thus, the as-constructed Fe3O4/C may be a prospective candidate for high performance anode materials of lithium-ion batteries.
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