Citation: 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 Physico-Chimica Sinica, ;2011, 27(09): 2118-2122. doi: 10.3866/PKU.WHXB20110841
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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 od rate capability with a capacity reached 124 mAh·g-1 even at a current density of 720 mA·g-1.
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