Cao fuel cell stack with large specific reactive surface area

Details Cao fuel cell stack with large specific reactive surface area Cao fuel cell stack with large specific reactive surface area

2006-06-22

2011-12-13

Gilliam, Barbara (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Fuel cell with solid electrolyte

C429S492000, C429S507000, C429S517000

Reexamination Certificate

active

08076042

ABSTRACT:
A polymer electrolyte membrane fuel cell stack comprising micro-fuel cell units having a circular cross section. Each includes an electric conductive tube that comprises a porous wall section and a non-permeable wall section, an inner electrode disposed around the peripheral surface of the porous wall section, a solid electrolyte member disposed around the inner electrode, and an outer electrode disposed around the electrolyte. The fuel cell stack comprises at least one fuel cell module, which includes an electric conductive planar sheet, and micro-fuel cell units laid side-by-side on the electric conductive planar sheet, the non-permeable sections of the micro fuel cell units being electrically interconnected. The fuel cell modules are stacked with an electrical insulating material between the outer electrodes of the fuel cell units in a first module and a second module's conductive planar sheet overlying or underlying the outer electrodes of the first module.

REFERENCES:
patent: 4490444 (1984-12-01), Isenberg
patent: 4876163 (1989-10-01), Reichner
patent: 5258240 (1993-11-01), Di Croce et al.
patent: 6060188 (2000-05-01), Muthuswamy et al.
patent: 2002/0127443 (2002-09-01), Breault

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