Electrochemical properties of LiNi_0.5Mn_1.3Ti_0.2O₄/Li₄Ti₅O₁₂ cells

Spinel compounds LiNi_0.5Mn_1.3Ti_0.2O₄ (LNMTO) and Li₄Ti₅O₁₂ (LTO) were synthesized by different methods. The particle sizes of LNMTO and LTO are 0.5-2 and 0.5-0.8 μm, respectively. The LNMTO/LTO cell exhibits better electrochemical properties at both a low current rate of 0.2C and a high current rate of 1C. When the specific capacity was determined based on the mass of the LNMTO cathode, the LNMTO/LTO cell delivered 137 mA·h·g^-1 at 0.2C and 118.2 mA·h·g^-1 at 1C, and the corresponding capacity retentions after 30 cycles are 88.5% and 92.4%, respectively.