A process for producing a fuel cell, fuel cell and fuel cell assembly flat

A process for producing a fuel cell (30, 30 '), comprising: Providing a proton exchange membrane (311), an anode (312) and a cathode (313, 314); Connecting the anode (312) and the cathode (312, 314) on opposite sides of the proton exchange membrane (311), thereby forming a membrane electrode assembly (31); Provision of two conductive networks (21, 33); Providing an adhesive in the B-stage (22); Transfer of the adhesive in the B-stage (22) on the surfaces of the conductive networks (21, 33) by hot press transmission; and Hot pressing of each conductive network (21, 33) with the adhesive in the B-state to the surfaces of the anode (312) and the cathode (313, 314) of the membrane electrode assembly (31) so that the conductive networks are connected to the membrane electrode assembly and contact the membrane electrode assembly directly.