High-energy, rechargeable electrochemical cells

Abstract

A solid, gel type non-aqueous electrolyte for use in an electrochemical cell, the electrolyte including: (a) at least one polymer compound; (b) at least one organic solvent, and (c) at least one electrolytically active salt represented by the formula: M′(ZRnXq-n)m in which: M′ is selected from the group consisting of magnesium, calcium, and aluminum; Z is selected from the group consisting of aluminum, boron, phosphorus, antimony and arsenic; R represents radicals selected from the following groups: alkyl, alkenyl, aryl, phenyl, benzyl, and amido; X is a halogen (I, Br, Cl, F); m=2-3; n=0-5 and q=6 for Z=phosphorus, antimony, and arsenic, and n=0-3 and q=4 for Z=aluminum and boron, wherein the polymer compound, organic solvent, and electrolytically active salt interact to form a non-aqueous electrolyte having a solid, gel type structure. The solid, gel type non-aqueous electrolyte is preferably incorporated into an electrochemical cell further including a metal anode and an intercalation cathode.

Dependencies are inferred from the claim text.