Chalcogenide electrochemical cell

Details Chalcogenide electrochemical cell Chalcogenide electrochemical cell

1978-09-18

1980-06-03

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

2521821, H01M 458

Patent

active

042062764

ABSTRACT:
A battery is provided in which the anode contains an alkali metal in a high state of thermodynamic activity; the cathode comprises a partially alkali metal-intercalated chalcogenide of the formula A.sub.y MZ.sub.x wherein A is an alkali metal more electropositive and larger than the anode alkali metal, M is a transition metal of Group IV or V, x is a numerical value of from about 1.8 to about 2.1, y is a numerical value of from about 0.01 to about 1 and Z is sulfur, selenium or tellurium; and the electrolyte comprises ions of the anode metal in a medium which is compatible with the anode and cathode allowing transport of the ion from anode to intercalate into the cathode.
In the discharged state the battery includes a cathode characterized by the presence of A'.sub.z A.sub.y MZ.sub.x in which A' is alkali metal more electronegative than A and z is a numerical value in the range 0<z.ltoreq.3.25.

REFERENCES:
patent: 4009052 (1977-02-01), Whittingham
patent: 4041220 (1977-08-01), Armand
patent: 4049879 (1977-09-01), Thompson et al.

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