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Plates

Each individual MEA produces less than 1 V under typical operating conditions, but most applications require higher voltages. Therefore, multiple MEAs are usually connected in series by stacking them on top of each other to provide a usable output voltage. Each cell in the stack is sandwiched between two bipolar plates to separate it from neighboring cells. These plates, which may be made of metal, carbon, or composites, provide electrical conduction between cells, as well as providing physical strength to the stack. The surfaces of the plates typically contain a “flow field,” which is a set of channels machined or stamped into the plate to allow gases to flow over the MEA. Additional channels inside each plate may be used to circulate a liquid coolant.

The picture to the right shows four different types of serpentine flow channels in graphite plates: (A) a single serpentine channel; (B) double serpentine flow channels; (C) four serpentine flow channels; and (D) a symmetric arrangement of four serpentine flow channels.

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Flex-Stak BiPolar Graphite Plate - 10 cm²
10 cm2 Bi-Polar Graphite plate suitable for small Hydrogen / Air Fuel Cells and Methanol Fue..
$37.50

Fuel Cell Grade Graphite Bipolar Plate, 4" x 4" x 5mm
Fuel Cell Grade Graphite Bipolar Plates can be machined on both sides to be used as bi-polar plat..
$55.00

Garolite Sheet - 6" x 6"
This Garolite sheet can be used to make fuel cell end plates. This Garolite grade is the flame-re..
From $26.00

Impervious Bipolar Graphite Plates, 12" x 12"
Fuel Cell Grade Graphite Bipolar Plates can be machined on both sides to be used as bi-polar plat..
From $214.00

(2) Hot-Press Aluminum Plates
Set of two Aluminum, alloy 6061 plates ideal for hot pressing Membrane Electrode Assemblies (MEA)..
From $72.00

Garolite Sheet - 12" x 12"
This Garolite sheet can be used to make fuel cell end plates. This Garolite grade is the flame-re..
From $52.00

Isomolded Graphite Plate - 4" x 4"
These Isomolded Graphite Plates can be machined on both sides.  Isomolded plates are made ou..
From $24.00

Isomolded Graphite Plate - 4" x 6"
These Isomolded Graphite Plates can be machined on both sides.  Isomolded plates are made ou..
From $48.00

Isomolded Graphite Plate - 6" x 6"
These Isomolded Graphite Plates can be machined on both sides.  Isomolded plates are made ou..
From $49.00

Isomolded Graphite Plate - 8" x 8"
These Isomolded Graphite Plates can be machined on both sides.  Isomolded plates are made ou..
From $92.00

Isomolded Graphite Plate - 12" x 12"
These Isomolded Graphite Plates can be machined on both sides.  Isomolded plates are made ou..
From $146.00