公开(公告)号：US20230420701A1

公开(公告)日：2023-12-28

申请号：US18036757

申请日：2021-11-16

Applicant: POWERCELL SWEDEN AB

Inventor： Mattias HOLMBERG,

IPC: H01M8/0263 ,  H01M8/0267 ,  H01M8/0273 ,  H01M8/242

CPC classification number: H01M8/0263 ,  H01M8/0267 ,  H01M8/0273 ,  H01M8/242

Abstract: A fuel cell assembly includes at least a first flow field plate and a second flow field plate sandwiching a multilayer membrane electrode assembly, wherein the multilayer membrane electrode assembly comprises at least a 3-layer membrane electrode assembly including a first electrode facing the first flow field plate, a second electrode facing the second flow field plate and a membrane separating the electrodes, wherein each flow field plate has a flow field structure protruding from a base level of the flow field plate for distributing reactant over the respective electrode, and wherein further at least one sealing element is arranged between the first and the second flow field plate, which is adapted to prevent leakage of the reactants to an environment, wherein in a boundary area between the flow field structure and the sealing element of at least one of the flow field plates at least one bypass stopping element is arranged for avoiding the reactant bypassing the flow field structure, wherein the bypass stopping element protrudes from the respective base level of the flow field plate, wherein the at least one bypass stopping element has a pointed portion, which is adapted to compress the multilayer membrane electrode assembly, as well as a flow field plate for such a fuel cell assembly.