Structural, electrical and electrochemical parameters of PEO–Li2So4 composite for battery applications.

Polymer electrolyte system based on polyethylene oxide (PEO) with Li2SO4 was prepared using solution cast technique at different weight percentages as a polymer electrolyte for battery application. The prepared films were characterized by FTIR, UV-Vis. spectroscopy, dc conductivity and Discharge characteristics. The fabrication of electrochemical cell in the configuration anode/polymer electrolyte/cathode and cell parameters was carried out using the Wagner polarization technique. The UV–Vis spectra reveal that the absorption bands positioned at different absorption intensities with dopant. The optical band gap was evaluated using Tauc's expression. The electrical conductivity was found increases with increasing of dopant concentration. Obtained results suggest that these polymer systems are potentially suitable candidates for solid state battery, optoelectronics display and electro chromic devices etc. [ABSTRACT FROM AUTHOR]