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US 6,284,399 B1Granted
Fuel cell system having humidification membranes
AssigneePlug Power Inc.
InventorsUriel M. Oko, James H. Kralick
Life of this patent
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Abstract
The invention relates to a fuel cell system having membranes that are used to humidify reactant gases. The membranes effectively prevent contamination of the reactant gases during humidification. The membranes can be used to purify the reactant gases during humidification.
Claims28
A method of operating a fuel cell, comprising:
- humidifying a reactant gas stream with a humidifying liquid stream while blocking at least about 90% of the contaminants contained in the humidifying liquid stream from entering the reactant gas stream to form a humidified reactant gas stream;
- and
- flowing the humidified reactant gas stream through the fuel cell.
Dependencies are inferred from the claim text.