Rechargeable lead-hydrogen electrochemical cell

Details Rechargeable lead-hydrogen electrochemical cell Rechargeable lead-hydrogen electrochemical cell

1983-01-21

1984-08-21

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

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

429228, H01M 1208

Patent

active

044670206

ABSTRACT:
An improved rechargeable lead-hydrogen electrochemical cell is provided which comprises a cell stack secured to a retainer and disposed within a pressure vessel containing hydrogen gas. The stack includes a positive electrode comprising lead oxide, a pair of gas-porous negative electrodes containing a catalyst, a pair of separators and a pair of gas screens. The stack components are saturated with sulfuric acid electrolyte. Each of the negative electrodes has a separator disposed on one side thereof and a gas screen disposed on the opposite side thereof. The pressure vessel contains a gas inlet, and electrical leads connect to, respectively, the positive and negative electrodes and exit the pressure vessel. In the charged form, the cell reactants exist as lead oxide and hydrogen gas. When the cell is discharged, the lead oxide is reduced to lead sulfate and the hydrogen gas is oxidized at a catalytic surface to hydrogen ion. The cell has a lower cost with fewer technical problems, has a higher specific energy density and has a superior performance, relative to conventional metal hydrogen cells.

REFERENCES:
patent: 3850694 (1974-11-01), Dunlop et al.
patent: 4107395 (1978-08-01), Ommering et al.
patent: 4369235 (1983-01-01), Bursell

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