Synthesis and Electrochemical Properties of Li4Ti5O12/CuO Anode Material for Li-Ion Batteries
Spinel-type electrode material Li4Ti5O12/CuO was synthesized by a two-step solid state reaction method. Cupric acetate (Cu(Ac)2) was used as raw material mixed into Li4Ti5O12 to coat the surface of Li4Ti5O12 with CuO in order to improve the electrochemical and cycle performances. The samples were characterized by XRD and the grain size analysis was researched by laser particle-size analyzer. The curves of charge/discharge and cycles Li4Ti5O12/CuO were researched. The results showed that the electrochemical properties of the material were improved. Among the three samples investigated, it was found that the Li4Ti5O12/CuO (coating amount was 4wt%) possesses the best electrochemical performance, and the first discharge specific capacity was 224, 173, 165 and 162mAh/g at 0.5C, 1C, 5C and 10C rate, respectively.
Fei Hu and Beibei Wang
J. P. Zhu et al., "Synthesis and Electrochemical Properties of Li4Ti5O12/CuO Anode Material for Li-Ion Batteries", Advanced Materials Research, Vol. 279, pp. 77-82, 2011