Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Means for distributing – storing – or preventing fluid movement
Reexamination Certificate
2006-01-11
2011-10-25
Crepeau, Jonathan (Department: 1725)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Means for distributing, storing, or preventing fluid movement
C429S481000, C429S483000
Reexamination Certificate
active
08043767
ABSTRACT:
An electrochemical fuel cell includes a membrane-electrode assembly (MEA) having a cathode face and an anode face. The MEA is between a cathode fluid flow field plate and an anode fluid flow field plate. A diffusion structure is between the MEA and a corresponding fluid flow field plate, which is either the cathode fluid flow field plate or the anode fluid flow field plate. The diffusion structure has a first face in contact with, or adjacent to, the MEA and a second face in contact with, or adjacent to, the corresponding fluid flow field plate. The diffusion structure includes a first layer having a first level of hydrophobicity and a second layer that is hydrophilic. The second layer is adjacent to the corresponding fluid flow field plate, and includes a hydrophilic binder material.
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Crepeau Jonathan
Douyette Kenneth
Fish & Richardson P.C.
Intelligent Energy Limited
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