Preparation and electrochemical performances of ternary LiNi_1-x-yCo_xMn_yO₂ cathode material

As the most promising commercial lithium-ion battery, the LiNi_1-x-yCo_xMn_yO₂ cathode have become the focus of researchers in recent years. However, there are less researches on the synthetic process of this material. This paper discusses various sintering processes of LiNi_0.8Co_0.15 Mn_0.05O₂, and the characterization and electrochemical performances testing of the prepared cathode materials. The research shows that the material has higher specific capacity (about 200 mA · h ·g^-1) at 0.1C (C is battery capacity rating value) charging-discharging rate. At 1C and 100 times of charging-discharging, the capacity retention ratios of 480℃ @ 3h + 780℃ @ 5h and 500 ℃ @ 5h + 780 ℃ @ 10h sintering processes are 94% and 86%, respectively, which illustrates the synthetical properties of the cathode materials prepared by these two processes are optimal. (authors)