MICRO FUEL CELL SYSTEM

摘要

The invention relates to a micro fuel cell system (1) that comprises a membrane electrode assembly (MEA) (2) that is covered at the cathode and at the anode side with respective current-discharging foils (3, 4). Said current-discharging foils are provided with at least one gas-permeable opening (5, 6) each. Diffusion channels are disposed on at least one of the current-discharging foils (3, 4) on the side facing the MEA (2) and the width of said channels ranges between 1 and 300 micrometers. These diffusion channels replace for example porous gas diffusion layers or gas diffusion layers made of a nonwoven material and thus safeguard alone the microdiffusion of gas on the MEA (2). The diffusion channels are linked with the gas-permeable openings (5, 6) for guiding the gas and webs of the diffusion channels are provided with an electroconductive surface (11, 12) for contacting the MEA.