Preparation and electrochemical properties of nonwoven reinforced solid polymer electrolytes

Reinforced PEG-based polymer electrolytes were prepared by UV curing method . In this study, nonwoven sheets which were polyethylene terephthalate and polypropylene were used for that purpose. To enhance the ionic conductivity of reinforced PEG-based polymer electrolytes, oligomeric poly(ethylene gly col) dimethyl ether was added as a plasticizer, which is a sort of nonvolat ile chemicals. The reinforced PEG-based polymer electrolytes showed the ion ic conductivity of around 1.2 x 10(-4) S/cm at 30 degrees C, which was a li ttle bit lower than the value of not reinforced one, that is pristine UV cu red SPE. Even though the reinforced PEG-based polymer electrolytes didn't h ave any organic solvent such as ethylene carbonate, lithium ionic type poly mer cell containing the polymer electrolyte showed reasonable specific disc harge capacity of 116 mAh/g at room temperature.