Converging/diverging flow channels for fuel cell

摘要

A PEM fuel cell having serpentine flow field channels each having an inlet leg, an exit leg, at least one medial leg therebetween, and hairpin curved ends connecting the medial leg(s) to other legs of the sector. Each leg is separated from the next by a tapering land so that it converges/diverges on/from the next adjacent leg (i.e. its longitudinal centerline intersects the longitudinal centerline of an adjacent leg).