Polymerní nanokompozity na bázi jílových minerálů pro lithium-iontové baterie

Abstract

This bachelor thesis deals with the preparation of electrolyte powder for lithium-ion batteries. Clay minerals vermiculite and montmorillonite were used as matrices for preparation of powder electrolyte. The lithium salt of lithium trifluoromethanesulfonate (LITFMS) was intercalated into these matrices. Last part of electolyte were the polymers. The polymers used here were polyvinylidenfluoride (PVDF) and polyethylene oxide (PEO). For characterization of prepared materials were used X-ray diffraction (XRD) analysis, Infrared (IR) spectroscopy, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). XRD analysis confirmed the successful intarcation of lithium salt and polymers into both clay minerals. Individual bonds in mixtures of clay minerals were determined by IR spectroscopy. The structure and morphology of individual samples was studied by SEM. DSC analysis subsequently confirmed the positively effects of the clay matrix as a flame barrier.