Chemistry: electrical current producing apparatus – product – and – Having earth feature
Reexamination Certificate
2006-01-31
2006-01-31
Alejandro, Raymond (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having earth feature
C429S006000, C429S006000, C427S115000
Reexamination Certificate
active
06991869
ABSTRACT:
A subassembly for a stack of electrochemical cells that includes a porous metal sheet having a first face and a second face with a hydrophobic, carbonaceous gas diffusion layer disposed within the pores along the first face of the porous metal sheet. The second face of the porous metal sheet defines a flow field while that portion of the porous metal sheet filled with the gas diffusion layer forms a current collector. The subassembly may further include a metal gas barrier metallurgically bonded to the second face of the porous metal sheet to act as a gas barrier between the porous metal sheet and a second porous metal sheet having a second gas diffusion layer disposed within the pores along a face of the second porous metal sheet. Preferably, the gas diffusion layers are applied as a paste to the porous metal sheet and then dried.
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Cisar Alan J.
Jeng King-Tsai
Moaddel Homayoun
Murphy Oliver J.
Salinas Carlos
Alejandro Raymond
Campigotto Frank J.
Lynntech Power Systems, Ltd.
Streets Jeffrey L.
Streets & Steele
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