Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1976-12-20
1979-03-13
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429219, 429230, H01M 1048
Patent
active
041443829
ABSTRACT:
The active cathode material of an alkaline cell is a mixture of monovalent silver oxide and graphite or a compound of which the main ingredient is divalent silver oxide. The active anode material is powdered mercury-indium-zinc alloy mixed with a suitable binder and pressed into formed or gelled state. After almost all of the zinc of the anode material is exhausted during the course of discharge of the cell, a small quantity of indium acts as the anode active material so as to continue to supply current for a period of time but at lower voltage. By detecting the voltage drop, it can be determined that the cell is approaching the end of its useful life.
REFERENCES:
patent: 2942052 (1960-06-01), Bourke et al.
patent: 3757793 (1973-09-01), Fester et al.
patent: 3764389 (1973-10-01), Hsia et al.
patent: 3961985 (1976-06-01), Takamura et al.
patent: 4025700 (1977-05-01), Fagan et al.
Jasinski, High Energy Batteries, pub. Plenum Press, N.Y. 1967, pp. 58-60.
Kishi Iwao
Takeda Kazutoshi
Adams Bruce L.
Burns Robert E.
Kabushiki Kaisha Daini Seikosha
Lobato Emmanuel J.
Walton Donald L.
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