Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1991-03-18
1993-01-12
Langel, Wayne
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
429 35, 429 36, H01M 208, H01M 824
Patent
active
051789680
ABSTRACT:
A fuel cell stack includes a plurality of fuel cells juxtaposed with one another in the stack and each including a pair of porous plate-shaped anode and cathode electrodes that face one another, and a quantity of liquid electrolyte present at least between the electrodes. A separator plate is interposed between each two successive electrodes of adjacent ones of the fuel cells and is unified therewith into an integral separator plate by forcing most of a quantity of an electrolyte-nonwettable material, which is originally introduced into the respective interface as a sheet of such material, into the pores of the respective electrodes. A circumferentially complete barrier that prevents flow of shunt currents onto and on an outer peripheral surface of the separator plate is formed by extruding the remainder of the electrolyte-nonwettable material out of the respective interface. This carrier also prevents cell-to-cell migration of any electrolyte that may be present at the outer periphery of the integral separator plate while the latter is incorporated in the fuel cell stack.
REFERENCES:
patent: 4371433 (1983-02-01), Balko et al.
patent: 4786568 (1988-11-01), Elmore et al.
patent: 5079104 (1992-01-01), Roche et al.
patent: 5096786 (1992-03-01), Granata et al.
International Fuel Cells Corporation
Langel Wayne
Ruzek Peter R.
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