Bipolar plate channel structure with knobs for the improvement of water management in particular on the cathode side of a fuel cell

摘要

A fluid distribution assembly for use in a fuel cell includes a separator plate having a major face. A boundary element is disposed over the major face. A flow field communicates reactant in a flow direction across the separator plate. The flow field is defined by a plurality of knobs formed on the separator plate extending from the major face toward the boundary element.