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Ambient pressure fuel cell system

Patent ·
OSTI ID:873236
 [1]
  1. Los Alamos, NM
+ Show Author Affiliations

An ambient pressure fuel cell system is provided with a fuel cell stack formed from a plurality of fuel cells having membrane/electrode assemblies (MEAs) that are hydrated with liquid water and bipolar plates with anode and cathode sides for distributing hydrogen fuel gas and water to a first side of each one of the MEAs and air with reactant oxygen gas to a second side of each one of the MEAs. A pump supplies liquid water to the fuel cells. A recirculating system may be used to return unused hydrogen fuel gas to the stack. A near-ambient pressure blower blows air through the fuel cell stack in excess of reaction stoichiometric amounts to react with the hydrogen fuel gas.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM
DOE Contract Number:
W-7405-ENG-36
Assignee:
Regents of University of California (Los Alamos, NM)
Patent Number(s):
US 6117577
OSTI ID:
873236
Country of Publication:
United States
Language:
English

References (1)

Management of the Water Content in Polymer Electrolyte Membranes with Porous Fiber Wicks journal November 1993

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air
ambient
ambient pressure
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anode
assemblies
bipolar
bipolar plate
bipolar plates
blower
blows
cathode
cell
cell stack
cells
distributing
electrode
electrode assemblies
excess
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fuel
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fuel cells
fuel gas
gas
hydrated
hydrogen
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meas
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oxygen
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pump
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recirculating
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stoichiometric
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stoichiometric amounts
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unused
water