CONICET | Buscador de Institutos y Recursos Humanos

Lithium-ion batteries are the most promising devices for energy storage, from low-power mobile applications to megaprojects. Europe with a giga plan of making lithium batteries in all the countries. Moreover, some types of lithium-ion batteries need better performance for high current consumption in a cyclic way, which for makes them suitable for power storage applications basically in two fields: electric vehicles and alternative energies.This presentation shows a brief description of the advances of the technologies of lithium in Argentina and the state of the art of this type of battery at the level of basic research and industrial developments. In addition, some results of the development of materials for high performance electrodes for lithium-ion batteries are presented. In our laboratories we focus on the area of lithium-sulfur batteries (S/C materials cathodes) and lithium-ion batteries (materials cathodes: the spinels of LiMn2O4, LiMn2-xNixO4, LiNi0.5Mn1.49Ti0.01O4, and layered lithium-rich oxides (Li1.2Ni0.2Mn0.6O2) which are the most promising systems in this particular field), and on the synthesis and physical and electrochemical characterization of these materials using different techniques such as cyclic voltammetry, charge-discharge cycling, electrochemical impedance spectroscopy, SEM, TEM, XRD, and EDS. The synthesized cathodic materials will be used to develop lithium-ion battery prototypes. With this setup it is now possible to characterize different anodic and cathodic active materials by X-ray spectroscopy techniques such as XANES and EXAFS at different working conditions i.e., different states of charge (SOC) or during a potentiodynamic run, and also under normal operation conditions such as charge-discharge cycles.

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