Sunlight rechargeable storage cell

Details Sunlight rechargeable storage cell Sunlight rechargeable storage cell

1979-12-13

1981-04-14

Weisstuch, Aaron

Chemistry: electrical current producing apparatus, product, and

Deferred action type

Responsive to light

H01M 630, H01M 636

Patent

active

042620660

ABSTRACT:
In a rechargeable storage cell, the photoredox reaction and regenerating reaction of a photoredox couple in one half-cell provide the driving force for producing charged state redox couples in both first and second half-cells separated by an ion selective permeable membrane. In the primary embodiment, a thionine dye photoreacts with ferrous ions in the first dye containing half-cell to oxidize those ions. The reduced form of the dye then reacts via a selective electrode in the first half-cell connected to an electrode in the second half-cell to reduce ferric ions in the second, dye-free half-cell. When the second half-cell electrode is then connected to a first half-cell electrode which is reversible to the iron ions, the concentration cell formed by the above reactions can be discharged through a load by the redox reaction of the iron ions.

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