Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2011-08-16
2011-08-16
Michener, Jennifer K. (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S452000, C429S454000
Reexamination Certificate
active
07998631
ABSTRACT:
A fuel cell stack includes a first fuel cell assembly and a last fuel cell assembly. The first fuel cell assembly includes a first end plate assembly, which has a first end plate cooling channel adapted to receive a coolant. The last fuel cell assembly includes a last end plate assembly that has a last end plate cooling channel. A first electrical potential exists between the first end plate and the last end plate. The fuel cell stack also includes a connecting cooling channel is in fluid communication with the first end plate cooling channel and the last end plate cooling channel. A coolant is contained within the connecting coolant channel, the first end plate cooling channel, and a last end plate cooling channel. The fuel cell stack further includes a coolant electrode positioned in the coolant channel, which contacts the coolant. A voltage source is in communication with the first end plate and the coolant electrode such that a second electrical potential between the coolant electrode and the first end plate is at a sufficient voltage to impede corrosion of the first end plate.
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Abd Elhamid Mahmoud H.
Dadheech Gayatri Vyas
Mikhail Youssef M.
Brooks & Kushman P.C.
GM Global Technology Operations LLC
Mekhlin Eli S
Michener Jennifer K.
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