Gas distributor structure and gas diffusion electrodes for polymer electrolyte fuel cells

Gas distributor for polymer electrolyte fuel cells contains 4 layers, comprising a coarsely porous carbon carrier sheet with a porous hydrophobic layer on each side and a contact layer on one of these. Independent claims are also included for: (a) gas diffusion electrodes for fuel cells, comprising the gas distributor structure and an electrolyte layer on the contact layer; (b) membrane electrode units for fuel cells comprising a polymer electrolyte membrane and gas diffusion electrodes on both sides; at least one of which is the cited gas diffusion electrode; (c) polymer electrolyte fuel cells with the specified membrane electrode unit; (d) five methods of producing the gas distributor structure.