Method for producing a catalyst-coated membrane
AssigneeAudi AG
InventorPascal Piszczek
Life of this patent
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Abstract
A method for producing a catalyst-coated membrane includes: producing and/or providing at least one first ink with a first ink composition, comprising supported catalyst particles, a proton-conductive ionomer, and a dispersing agent, the content of the supported catalyst particles in the composition remaining below the content of the proton-conductive ionomer; unwinding a web-shaped proton-conductive membrane material which is provided on a roll; applying at least one layer of the first ink onto at least one section of the membrane material using a first application tool; and sputtering a catalyst powder consisting of or comprising catalyst particles onto a surface of the outermost ink layer facing away from the membrane material using a sputtering device.
Claims10
A method for producing a catalyst-coated membrane, comprising:
- producing and/or providing at least one first ink having a first ink composition, comprising supported catalyst particles, a proton-conductive ionomer and a dispersing agent, the content of the supported catalyst particles in the composition being lower than the content of the proton-conductive ionomer;
- unrolling a web-shaped proton-conductive membrane material, which is provided on a roll;
- applying at least one layer of the first ink onto at least one section of the proton-conductive membrane material using a first application tool;
- and
- sputtering a catalyst powder consisting of or comprising catalyst particles on a surface of an outermost ink layer which faces away from the proton-conductive membrane material using a sputtering device such that a density of the catalyst particles at the surface of the outermost ink layer is increased relative to a density of the catalyst particles of a remainder of the outermost ink layer.
Dependencies are inferred from the claim text.