The synthesis and properties of a new type of polymer gel electrolyte are discussed. The composite electrolytes consist of equimolar amounts of LiPF6 and tetraglyme (G4) to create [Li(G4)]PF6 which is added to a polyelectrolyte matrix. These materials display room-temperature conductivities. 10(-4) S/cm and posses an electrochemical stability of greater than 5.0 V vs. Li+/Li. (C) 2004 The Electrochemical Society.