Uniform Fe3O4 microflowers hierarchical structures assembled with porous nanoplates as superior anode materials for lithium-ion batteries

Xiaoliang Wang, Yanguo Liu, Hamidreza Arandiyan, Hongping Yang, Lu Bai, Jawayria Mujtaba, Qingguo Wang, Shanghe Liu, Hongyu Sun

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    Abstract

    Uniform Fe3O4 microflowers assembled with porous nanoplates were successfully synthesized by a solvothermal method and subsequent annealing process. The structural and compositional analysis of the Fe3O4 microflowers were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The Bruauer-Emmett-Teller (BET) specific surface area was calculated by the nitrogen isotherm curve and pore size distribution of Fe3O4 microflowers was determined by the Barret-Joyner-Halenda (BJH) method. When evaluated as anode material for lithium-ion batteries, the as-prepared Fe3O4 microflowers electrodes delivered superior capacity, better cycling stability and rate capability than that of Fe3O4 microspheres electrodes. The improved electrochemical performance was attributed to the microscale flowerlike architecture and the porous sheet structural nature.
    Original languageEnglish
    JournalApplied Surface Science
    Volume389
    Pages (from-to)240-246
    Number of pages7
    ISSN0169-4332
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Fe3O4
    • Anode
    • Microflowers
    • Nanoplates
    • Lithium-ion batteries

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