| 摘要 |
The invention relates to a repeater unit (10) for a fuel cell stack (8), comprising a membrane electrode assembly (20) and a flow field (30), designed to supply an active surface (22) of the membrane electrode assembly (20) with gas (32) and which has at least one gas through opening (34). According to the invention, a gas-tight flow barrier (36) is arranged between the active surface (22) and the gas through opening (34), such that gas (32), flowing through the first gas through opening (34) flows around the gas flow barrier (36), wherein the projection of the gas flow barrier (36) on the edge of the active surface (22) is at least half as long as the projection of the gas through opening (34) on the edge of the active surface (22). |
