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US 5,525,442 AGranted
Alkali metal battery
AssigneeWestinghouse Electric Corp.
InventorNicholas Shuster
Life of this patent
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Abstract
An alkali metal battery has an alkali metal anode such as lithium in an organic anolyte and a cathode in an aqueous catholyte. An ion conductive diaphragm allows ions to migrate between the anolyte and the catholyte while limiting the transport of water from the catholyte to the anolyte. In a preferred embodiment, the ion conductive diaphragm is nonporous so that there is no transport of water ion to the anolyte. The battery is particularly useful for long durations of up to a week or longer in seawater.
Claims20
An alkali metal battery comprising:
- an alkali metal anode in an organic anolyte;
- a cathode in an aqueous catholyte;
- an ion conductive diaphragm means in contact with the organic anolyte and with the aqueous catholyte for allowing ions to migrate between the anolyte and the catholyte while limiting transport of water from the catholyte to the anolyte.
A lithium battery, comprising:
- a lithium anode in an organic anolyte containing an ionized lithium salt;
- a cathode in an aqueous catholyte;
- and
- a nonporous solid electrolyte disposed between the anolyte and the catholyte.
1 more element
A sodium battery, comprising:
- a sodium anode in an organic anolyte containing an ionized sodium salt;
- a cathode in an aqueous catholyte;
- and
- a nonporous solid electrolyte disposed between the anolyte and the catholyte.
1 more element
Dependencies are inferred from the claim text.