Novel hybrid composites NaCF3SO3–PEO–NASICON for sodium ion battery applications

Abstract

Na+ ion based hybrid solid polymer electrolyte with high ionic conductivity and appreciable electrochemical stability has been reported. Addition of nano NASICON ceramic fillers [NaTi2(PO4)3] in polymer electrolyte matrix leads to significant ionic conductivity enhancement. These composites have been prepared in wide composition range and exhibit thermal stability at least upto 100°C for compositions with large amount of NASICONs. A maximum ionic conductivity of 3×10−5 Ω−1cm−1 is obtained at 40°C for a typical composition 10NaCF3SO390[0.7NTP0.3PEO]. The hybrid polymer composites are potential candidates for Na+ ion based solid-state battery applications