Electrochemical cell

Details Electrochemical cell Electrochemical cell

1984-06-25

1986-04-08

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

With measuring, testing, or indicating means

For charge or liquid level

429194, 429197, 429220, H01M 1048

Patent

active

045813051

ABSTRACT:
The electrochemical cell comprises an outer conductive housing, an anode material within the housing, a cathode material within the housing, and porous insulating means separating the anode material from the cathode material, and an electrolyte inside the housing and within the porous insulating means. The cathode material is a mixture of a metallic halogen compound and a metallic sulfide compound less electrochemically reactive with the anode material than the metallic halogen compound. The metallic halogen compound and the less electrochemically reactive metallic sulfide compound are mixed in a proportion whereby a first voltage potential can be developed between the metallic halogen compound and the anode material until the metallic halogen compound is depleted so that a second voltage potential different than the first voltage potential can be developed between the less reactive metallic sulfide compound and the anode material after the metallic halogen compound is depleted in order to indicate depletion of the metallic halogen compound and the approaching end of life of the cell.

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