engleski

SAXS Studies of TiO2 Nanoparticles in Polymer Electrolytes

Electrolytes as nanostructured materials are very attractive for batteries or othertypes of electronic devices. (PEO)8ZnCl2 polymer electrolytes and nanocomposites (PEO)8ZnCl2/TiO2 were prepared from PEO and ZnCl2 and with addition of TiO2 nanograins.The influence of TiO2 nanograins was studied by small-angle X-ray scattering (SAXS) simultaneously recorded with wide-angle X-ray scattering (WAXD) and differential scanningcalorimetry (DSC) at the synchrotron ELETTRA. It was shown by previous impedance spectroscopy (IS) that the room temperature conductivity of nanocomposite polymer electrolyte increased more than two times above 65°C, relative to pure composites of PEO and salts. The SAXS/DSC measurements yielded insight into the temperature-dependent changes of the grains of the electrolyte as well as to differences due to different heating and cooling rates. The crystal structure and temperatures of melting and crystallization of the nanosize grains was revealed bythe simultaneous WAXD measurements.

SAXS/DSC/WAXD; polymer electrolytes

Na Second Regional Symposium on Electrochemistry RSE-SEE, imam pozvano predavanje: "SAXS Studies of TiO2 Nanoparticles in Polymer Electrolytes".