Study on synthesis kinetics of LiNi0.95Al0.05O2 prepared by solid phase method

Using LiOH, NiO₂ and Al₂O₃ as raw materials, the synthesis reaction of LiNi_0.95Al_0.05O₂ was found occurring between 410°C to 475°C through analyzing the synthetic process by TG-DTA technique. The kinetic parameters of reaction were calculated by Starink model and Kissinger model, they are activation energy 207.63 kJ-mo^-1, reaction order 1.61, reaction rate constant 0.74, and then the rate equation of reaction was given. XRD results indicate that the crystal structure of LiNi_0.95Al_0.05O₂ belongs to hexagonal system and R3̅m space group, so LiNi_{0. 95}A1_0.05O₂ is suitable to be used as cathode materials for Li-ion batteries.