Composite polymer electrolytes based on poly ethylene oxide and non-ionic fillers

5 Composite polymer electrolytes based on poly(ethylene oxide) and non-ionic fillers 

Since the first studies performed in the 1980s, a large number of metal oxide charges have been added to polyether matrices. The fillers used are generally ZnO, and yA102.  

A net decrease in PEO crystallinity was observed with the incorporation of fillers. ° In PEO/LiTFSI complexes, an amorphous structure, stable for several months, can be obtained with the incorporation of small amounts of fillers. Using Li nuclear magnetic resonance (NMR) investigation, Dai et found that the addition of nanometric AI2O3 to PEO/Lil electrolyte suppressed the formation of crystalline phases. The ceramic fillers, because of their large surface area, may prevent local PEO organisation and significantly reduce PEO crystallisation kinetics. 

The Eg of a polymer is directly related to the macroscopic viscosity of the amorphous phase. In a semicrystalline polymer, the amorphous phase is constrained by the crystalline phase, thus the Eg measured in a semicrystal- 

These specific interactions can be investigated using IR and Raman spectroscopy, NMR or quasielastic neutron scattering. Several studies have been carried out on nanocomposite polymer electrolytes using these techniques. 

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