Michal Piszcz

Electrochemical Characterization of Novel Hybrid Polymer Electrolytes with Multifunctional Additive

In this article the properties of the electrolyte basing on the product of the reaction of methylalumoxane with oligoethyleneglycols are studied. The electrochemical studies are performed to describe the conductivity and lithium transference number of the system. In addition DSC, SEM, NMR and vibrational spectroscopy studies are used to get more detailed description of the material. Three classes of electrolytes are here taken into consideration. First bases on PEGDME liquid oligoether system modified with the MAO-PEGME branched hetocomposite system. The second one is the branched product itself used as an electrolyte matrix. In the last cas a crosslinked system was obtained by the utilization of PEGDME - PEG mixture. Obtained conductivities were in range of 10(-4) S/cm for liquid like systems and above 10(-5) S/cm for the solid ones. For LiCF3SO3 containing samples lithium transference number was promising in range from 0.35 to 0.5.