H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/24 (2006.01) C25B 9/18 (2006.01) H01M 8/02 (2006.01)
Patent
CA 2380732
The present invention relates to an electrochemical cell stack comprising alternately arranged membrane electrode assemblies (2) and separator plates (1) having channel regions (3) via which the reactant or oxidant fluids are supplied to and removed from the membrane electrode assembly (2), the separator plates (1), on one side, having a surface structure of channels (5) and ridges (4) located therebetween and, on the other side, having a surface structure which is negative with respect thereto. According to the present invention, the separator plates (1) include a channel region (3) which is offset from the geometric center (M) in such a manner that, upon stacking the separator plates (1), with neighboring separator plates (1) being in each case arranged such that they are rotated relative to each other by 180° about the surface normal (F), the separator plates (1) lie over each other in such a manner that forces acting from outside are transmitted without any flexural moment with respect to the MEA (2) located between the separators plates (1).
Bohm Gustav
Sondermann Mario
Daimlerchrysler Ag
Fetherstonhaugh & Co.
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