Combination cell. [electrolytic regenerative hydrogen--oxygen fuel cells]
A combination water electrolyzer and fuel cell is described for selectively storing and supplying energy while in a substantially fixed position, typically comprising a pan held in a substantially horizontal position, an aqueous alkaline electrolyte (e.g., NaOH) held within the pan at elevated temperature, means communicating with a supply of hydrogen and forming a container for the hydrogen within the pan, a thin nonporous corrosion resistant hydrogen diffusion negative electrode (e.g., PdAg) having a porous support positioned within the pan and having one surface on contact with the electrolyte and an opposite surface communicating with the hydrogen, means communicating with a supply of oxygen and furnishing the oxygen to a region contiguous with the exposed surface of the electrolyte, a thin porous corrosion resistant positive electrode (e.g., Pt or alloy thereof) in contact with the electrolyte, and means for connecting the electrodes selectively either to a source of direct current for charging the cell or to an electric load circuit for using the energy stored in the cell when charged. Typically included are an insulating member fitting onto the upper portion of the cell and shaped to hold another such cell; at least one additional such cell, each held by the insulating member of the cell beneath it; means for storing in a first confined region the supply of hydrogen, including that produced duringcharging; and means for storing in a second confined region the supply of oxygen, including that produced during charging, with the partial pressure of the oxygen at least about 5 psia.
- Assignee:
- Battelle Memorial Inst.
- Patent Number(s):
- US 4048383
- OSTI ID:
- 6488763
- Resource Relation:
- Patent File Date: Filed date 9 Feb 1976
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HYDROGEN FUEL CELLS
DESIGN
REGENERATIVE FUEL CELLS
ELECTROLYSIS
ELECTROLYTIC CELLS
HYDROGEN PRODUCTION
HYDROGEN STORAGE
OXYGEN
CRYOGENIC FLUIDS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELEMENTS
FLUIDS
FUEL CELLS
LYSIS
NONMETALS
STORAGE
300501* - Fuel Cells- Design & Development