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SiO2-modified LiMn2O4 materials were synthesized by the electrostatic attraction forces with the followed heat treatment. The surface morphology, structure, and electrochemical performance were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), CV, and electrochemical impedance spectroscopies (EIS), respectively. SEM and XRD patterns revealed that SiO2 was not only coated...
Single-crystal magnesium-doped spinel lithium manganate cathode materials are prepared by the hydrothermal method followed by the heat treatment. XRD patterns reveal that Mg2+ions have already diffused into the Li1.088Mn1.912O4 crystal structure and not affect the Fd3m space group. SEM images demonstrate that the magnesium-doped spinel lithium manganates show uniform polyhedral single crystals with...
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