Synthesizing kinetics and characteristics of LiMnCoO₄ using as lithium-ion battery cathode material

The discomposing kinetics of lithium manganese cobalt oxides in dynamical oxygen atmosphere was studied by means of differential temperature analysis (DTA) with different heating rates, and it could be applied as an important theoretical principle for preparing LiMn₂O₄ derivants. The active energies of four reaction process are 93.905, 138.012, 158.148 and 891.496 kJ/mol, respectively. Reaction orders, frequency factors and kinetic equations of each reaction were determined by using Kissinger method. X-ray diffractrometry, field emission microscopy, transmitting electron microscopy, and electrochemistry analysis show that the LiMnCoO₄ synthesized with solid-step-sintering method has a pure phase, well-distributed particle, regular appearance and good electro-chemistry properties. The influence of element of cobalt on Jahn-Teller of LiMn₂O₄ was discussed in the viewpoint of structural chemistry.