A flow-guiding plate for a fuel cell, including a conductive sheet including a relief: defining alternating flow channels on first and second faces, two successive channels on the first face being separated by walls; defining first and second access holes at ends of each of the flow channels on the second face and of a first group of flow channels on the first face; defining a flow restriction in each flow channel of a second group of flow channels on the first face, the cross-section of the flow restrictions being smaller than the cross-section of the access holes to the flow channels of the first group, the first face including alternating flow channels of the first group and alternating flow channels of the second group.