The influence of the structural parameters of lithium battery cathodes on their characteristics has been studied. To explain the results obtained, a macrokinetic model of the electrode was applied, and mathematical simulation of the electrode discharge process was conducted. The nested ball model was used to describe the electrode structure. The data obtained during simulation are in good agreement with the practical results of electrode testing, which confirms the need for targeted optimization of the particle sizes in the cathode.
The review of cathode materials for lithium-ion batteries is presented, the analysis of advantages and application prospects of cathode materials on the basis of lithiated transition metals oxides is carried out. A method of heterovalent modification by ions of highly negative elements, lanthanum and its analogues for improving the electrochemical indices and stability of lithium manganese spinel is proposed. The effectiveness of fullerene, lithium fluoride, fullerenes halogen derivatives as modifying additive for MnO2 cathode materials has been noticed.
