Patent ID: 8592091

Claim:
A method for producing a proton-conducting structured electrolyte membrane for a fuel cell, the method comprising: providing a solid body surface; and applying a coating to the solid body surface, wherein the coating contains at least one ion-conducting cross-linking component having at least one acid group and at least one photoactive substance interacting therewith, at least one first area of the coating being masked optically by exposure to light such that the cross-linking component cross-links with the photoactive substance to form a polymer and/or copolymer network adhering to the solid body surface, whereby then, for structuring of the electrolyte membrane, at least one unexposed area of the coating is removed, and/or wherein the coating contains at least one ion-conducting cross-linking component having at least one acid group and at least one photoactive substance interacting therewith, which, after application to the solid body surface, are cross-linked to form a hydrophobic polymer and/or copolymer network adhering to the solid body surface, at least one second area of the coating being optically masked by exposure to light such that it becomes hydrophilic by a chemical reaction, whereby then for structuring of the electrolyte membrane the at least one second area of the coating is removed, and/or wherein the coating contains at least one ion-conducting cross-linking component having at least one acid group and at least one photoactive substance interacting therewith, which, after application to the solid body surface, are cross-linked to form a hydrophilic polymer and/or copolymer network adhering to the solid body surface, at least one first area of the coating being optically masked by exposure to light such that it becomes hydrophobic by a chemical reaction, whereby then for structuring of the electrolyte membrane at least one unexposed area of the coating is removed, and/or wherein the coating contains at least one ion-conducting cross-linking component having at least one acid group, which after application to the solid body surface is cross-linked to form a polymer and/or copolymer network adhering to the solid body surface, whereby at least one second area of the coating is optically masked by exposure to light such that the polymer and/or copolymer chains are broken, whereby then for structuring of the electrolyte membrane the at least one second area of the coating is removed.