Abstract
In this work, nanosize MgFe2O4 spinel with quasispherical shape was prepared as anode material for lithium ion batteries by the hydroxide coprecipitation method. The crystal structure, composition, and morphology of the as-prepared powders were characterized by means of x-ray diffraction (XRD) analysis, x-ray photoelectron spectroscopy, and scanning electron microscopy (SEM), respectively. The XRD and SEM data revealed that the material as-prepared at 900°C was of high crystallinity and quasispherical with diameter of about 100 nm. A reaction mechanism is proposed. The␣electrochemical properties were evaluated by cyclic voltammetry and galvanostatic charge–discharge studies. The sample calcined at 900°C delivered a higher initial discharge capacity (1200 mAh g−1) and better cyclability. The enhanced electrochemical behavior was ascribed to the nanosize and the better crystallinity of the spherical powder. All the results suggest that nanosize quasispherical MgFe2O4 is a promising candidate anode material for lithium ion batteries.
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Liu, H., Liu, H. Synthesis of Nanosize Quasispherical MgFe2O4 and Study of Electrochemical Properties as Anode of Lithium Ion Batteries. J. Electron. Mater. 43, 2553–2558 (2014). https://doi.org/10.1007/s11664-014-3117-2
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DOI: https://doi.org/10.1007/s11664-014-3117-2