水热法合成高功率锂离子二次电池用球形Li4Ti5O12负极材料

doi:10.3866/PKU.WHXB20110841

Abstract

Abstract: Pure spinel-type lithium titanate, Li₄Ti₅O₁₂, was successfully fabricated by a facile hydrothermal route using anatase TiO₂ and LiOH solution as raw materials. The obtained samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and laser particle size distribution (PSD) analysis. The results showed that a spherical well-crystallized Li₄Ti₅O₁₂ oxide was obtained at a calcination temperature of 800 °C. The optimal Li₄Ti₅O₁₂ also has excellent electrochemical performance, which reached 162 mAh·g^-1 at a current density of 35 mA· g^-1 and a good rate capability with a capacity reached 124 mAh·g^-1 even at a current density of 720 mA·g^-1.

Key words: Hydrothermal synthesis, Spherical, Li₄Ti₅O₁₂, Electrochemical performance, Lithium-ion secondary battery

YAN Hui, ZHANG Huan, ZHANG Ding, ZHU Zhi, QI Lu. Hydrothermal Synthesis of Spherical Li₄Ti₅O₁₂ as Anode Material for High Power Lithium-Ion Secondary Battery[J].Acta Phys. -Chim. Sin., 2011, 27(09): 2118-2122.

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Hydrothermal Synthesis of Spherical Li₄Ti₅O₁₂ as Anode Material for High Power Lithium-Ion Secondary Battery

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Hydrothermal Synthesis of Spherical Li₄Ti₅O₁₂ as Anode Material for High Power Lithium-Ion Secondary Battery