Study on synthesis and properties of Li_4Ti_5O_(12)

Spinel Li4Ti5O12 was prepared by solid-state reaction method,and was characterized by XRD.The system of Li/Li4Ti5O12 was tested by constant current charge-discharge,cyclic voltammetry(CV),electrochemical impedance spectrum(EIS).The initial discharge capacity was 163.1 mAh/g and coulombic efficiency reached 97.5%.The capacity declined only by 4.4% after 60 cycles.The results show that Li4Ti5O12 is a kind of anode material with better cycling performance for lithium-ion battery and can be used to improve the safety and cyclicity of lithium-ion battery.