GAS DIFFUSION DEVICE FOR REDUCING PRESSURE LOSSES

The invention relates to a gas diffusion device (2), characterized in that it comprises a superposition of: [0002] -a composite material layer (23) including electrically conductive fibers and a polymerized resin coating said conductive fibers; [0003] -a first electrically conductive layer (20) presenting an open porosity between first and second faces and comprising a first recess (201) at the level of the second face (200), the first face (202) being in electrical contact with the conductive fibers of the composite material layer (23), the polymerized resin coating part of the first conductive layer (20) at the level of the first face (202); [0004] -a second electrically conductive layer (21) interposed between the first conductive layer (20) and said composite material layer (23), said second conductive layer (21) presenting an open porosity between first (212) and second faces (210) and comprising a first recess (211) extending between its first and second faces, said conductive fibers being in contact with the first face (212) of the second conductive layer (21); [0005] -said polymerized resin passes through said first recess (211) of the second conductive layer (21) and extends through the first face (202) of the first conductive layer (20).