Synthesis and electrical conductivity studies of PEO + LiClO4 + TiO2 + MoO3 nanocomposite solid polymer electrolyte

摘要

Titanium oxide nanofillers dispersed PEO + LiClO4 + MoO3 nanocomposite solid polymer electrolyte films were prepared by solution cast method. All the prepared samples were investigated by the X-ray diffraction, Fourier transformation infrared spectroscopy and scanning electron microscope with energy dispersive X-ray spectroscopy. Electrical conductivity of all the nanocomposite solid polymer electrolyte films was evaluated by analyzing the measured impedance. The highest conductivity of 1.07×10~(-4) S cm~(-1) at room temperature is found for the PEO + LiClO4 + TiO2 (5 wt%)+ MoO3 film. Dielectric constant and modulus data were calculated using the measured impedance data for all the prepared films and analyzed. Ionic transference number due to ions for the best conducting nano composite solid polymer electrolyte (PEO+Li++TiO2+MoO3) evaluated by the Wagner polarization technique is found to be t+ = 0.9967. The transference number value indicate that the developed NCSPE can be a potential electrolyte for lithium batteries as well as other ionic device applications.