Role of the ceramic fillers in enhancing the transport properties of composite polymer electrolytes

A model to account for the role of the ceramic fillers in enhancing the transport properties of PEO-based composite polymer electrolytes is here proposed. The model is supported by a series of specifically addressed electrochemical tests which included the determination of the conductivity and of the lithium transference number of various composite electrolyte samples differing from the type of the surface states of the ceramic filler.