Lithium halide primary cell having end of life indicator means

Details Lithium halide primary cell having end of life indicator means Lithium halide primary cell having end of life indicator means

1980-04-28

1981-01-27

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Fluid active material or two-fluid electrolyte combination...

429218, H01M 436

Patent

active

042476070

ABSTRACT:
The present invention relates to a lithium halide primary cell having means to indicate its end of life. The cell includes at least one lithium anode and a cathode in contact with a major surface of the anode wherein the indicating means comprises a stepped portion on the major surface of said anode which is not in contact with the cathode. The stepped portion of the anode comprises a surface area of from about 40 to 60% of the area of the major surface in contact with the cathode and about 15 to 5% of the total thickness of said anode.

REFERENCES:
patent: 3817791 (1974-06-01), Greatbach et al.
patent: 3874929 (1975-04-01), Greatbach
patent: 3994747 (1976-11-01), Greatbach et al.

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