Sb-based nanostructured composite with embedded TiO2 for Li-ion battery anodes

An Sb-based nanostructured composite with embedded TiO2 was prepared from Sb2O3, Ti, and carbon powders using a mechanochemical reduction method and was evaluated as an anode material in rechargeable Li-ion batteries. X-ray diffraction, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy analyses reveal that the Sb/TiO2/C nanocomposite is composed of nanocrystalline Sb, rutile-TiO2, and amorphous carbon. Electrochemical tests show that the electrochemical performance of the Sb/TiO2/C nanocomposite electrode is superior to that of the pure Sb electrode.

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► A new nanostructured Sb-based composite with embedded TiO2 was prepared by mechanochemical reduction.
► The nanocomposite was composed of well dispersed nanocrystalline Sb and rutile TiO2 within the amorphous carbon matrix.
► The nanocomposite was investigated as electrode materials for rechargeable Li-ion batteries.
► The Sb/TiO2/C nanocomposite electrode shows good electrochemical behavior with a long cyclability.