The present invention is directed to a planar flow field design having an
intake manifold and an exhaust manifold which are configured in two
offset planes. A relatively short passage extends from the intake
manifold through the exhaust manifold and terminates at a reactive face
of a membrane electrode assembly (MEA) such that a differential flow
distribution is provided from the intake manifold through the passage and
across a reactive face of the MEA to the exhaust manifold.