Corresponding Author

Zi-feng MA(zfma@sjtu.edu.cn)


Spinel Li4Ti5O12 was prepared by hydrothermal method using commercial anatase (TiO2) and lithium hydroxide (LiOH) as raw materials. The effects of the LiOH concentration of lithium hydroxide, hydrothermal reaction time and calcination temperature on the structure and electrochemical performance of Li4Ti5O12 were investigated. The formation process of Li4Ti5O12 was also proposed. The micro-structure and morphology wereas characterized by XRD, SEM, TEM techniques, and the electrochemical performance was analyzed by galvanostatic charge-discharge test. The results show that the pure phase spinel Li4Ti5O12 can be obtained when the LiOH concentration of lithium hydroxide is 0.2 mol.L-1, the hydrothermal time is 12 h, and the calcination temperature is 700 oC. The Li4Ti5O12 annealed at 700 oC has excellent electrochemical performance., theThe discharge specific capacity reached 146.3 mAh.g-1 at the current density of 1C, and exhibited superior high-rate performance of 101.3 mAh.g-1 at 40C.

Graphical Abstract


high power, hydrothermal method, Li4Ti5O12, anode material, lithium-ion battery

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