Abstract: Li4Ti5O12-C composite was prepared by solid state using C6H12O6 as carbon source. And it studied the influence of different reaction atmosphere on the physical properties and electrochemical performances of Li4Ti5O12-C composite. It was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), BET, electric conductivity and electrochemical tests. Results showed that the size, BET and electric conductivity of the sample which was sintered in N2 were all higher than the sample sintered in air. Rate property of sample sintered in N2 is better than sample sintered in air and its initial specific capacity is 166.8mAh/g at 0.1C. Cycle efficiency of them was similar after cycled 50s at 1C.

Key words: Li-ion battery, Li4Ti5O12, reaction atmosphere, C6H12O6, electric conductivity