Electrolyte compositions for alkali metal reversible batteries

Details Electrolyte compositions for alkali metal reversible batteries Electrolyte compositions for alkali metal reversible batteries

H - Electricity

01

M

319/24, 319/65

H01M 10/40 (2006.01) C07F 5/02 (2006.01) H01M 6/16 (2006.01)

Patent

CA 1079351

ABSTRACT OF THE DISCLOSURE Electrolyte compositions for reversible alkali metal cells, e.g., lithium batteries, are described which consist essential- ly of (a) organic solvents selected from the group consisting of inertly substituted and unsubstituted ethers, esters, sulfones, organic sulfites, organic sulfates, organic nitrites and organic nitrates; and (b) electrolytically active alkali metal salts including organometallic alkali metal salts having the formula ZMRn wherein Z is an alkali metal, M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, In, Tl, Sn (stannous), P and As, the Rs are certain organic radicals, and n is a numerical value equal to one plus the valence of the metal M. Rechargeable, high energy density electrochemical cells containing an anode having an alkali metal as its active material, a cathode, e.g., one having as its active material a transition metal chalcogenide, and an electrolyte composition of the above described type, are also described.

287605

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