Unit cell for solid polymer electrolyte fuel cell

Details Unit cell for solid polymer electrolyte fuel cell Unit cell for solid polymer electrolyte fuel cell

2007-02-08

2011-10-18

Gilliam, Barbara (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

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

Grouping of fuel cells into stack or module

C429S469000, C429S479000, C429S483000, C429S508000, C429S465000

Reexamination Certificate

active

08039162

ABSTRACT:
A unit cell for use in a solid polymer electrolyte fuel cell comprising: a membrane/electrode assembly including a fuel electrode and an oxidant electrode disposed on either side of a solid polymer electrolyte membrane, the assembly being sandwiched from either side by a first separator and a second separator to give a stacked construction to form therebetween a fuel gas flow passage and an oxidant gas flow passage. The solid polymer electrolyte membrane has a projecting portion projecting outwardly beyond the fuel electrode and the oxidant electrode, and the projecting portion is coated by a reinforcing resin member. Connecting grooves formed on a primary face of the separators connecting both ends of the fuel gas/oxidant gas flow passages with a fuel/oxidant gas feed/discharge ports, respectively. The reinforcing resin member is placed so as to bridge openings of the connecting grooves in order to give a tunnel construction to the connecting grooves.

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