Lithium-ion batteries have gained importance due to the growing need for energy storage, as they provide high operating voltage, greater specific capacity and have a longer lifespan compared to other commercial batteries. The biggest challenge of lithium-ion batteries is the degradation of cathode materials, so the development of these is crucial. Promising cathode materials for batteries, containing only manganese as transition metal, are lithium-manganese oxides; the spinel structure LiMn2O4 shows the greatest potential, as it operates at high voltages. In addition to LiMn2O4, the Li4Mn5O12 and Li2MnO3 with layered structure could potentially be used for the cathodes. Samples with a nominal composition of Li2MnO3, LiMn2O4, Li3,2MnO3 and Li1,6Mn2O4 were prepared via solid-state reaction. Positive electrodes, prepared from synthesized ceramic powders were used in battery cells. We determined the charge-discharge characteristics of the cells with galvanostatic cycling. In addition, we used XRD and SEM to analyze powders, sintered at different temperatures, as we wanted to prepare targets for thin film synthesis with pulsed laser deposition technique.
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