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US 12,633,547 B2Granted
Method for producing a functionalized structurized composition for a fuel cell and membrane electrode assembly
AssigneeAudi AG
InventorKarsten Seidel
Life of this patent
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Abstract
A method for producing a functionalized structurized composition for a fuel cell is provided, involving: applying at least one electrode containing catalyst particles to a substrate layer in a coating step, and introducing a depth structure in an electrode surface facing away from the substrate layer in a radiation step using laser interference structurization. A membrane electrode assembly is also provided.
Claims8
A method for producing a functionalized structurized composition for a fuel cell, comprising:
- applying at least one electrode containing catalyst particles to a substrate layer in a coating step;
- and
- introducing a depth structure in an electrode surface facing away from the substrate layer in a radiation step by laser interference structurization, wherein the depth structure comprises a network of intersecting channels including a plurality of channels extending in a first direction and a plurality of channels extending in a second direction that is perpendicular to the first direction,
- wherein the electrode is only partly dried in a drying step to form a dried marginal layer of the electrode that includes the electrode surface that faces away from the substrate layer, and the depth structure is introduced into the dried marginal layer of the electrode prior to complete drying of the electrode to increase an exposed surface area of the electrode, and
- wherein, after the depth structure is introduced into the dried marginal layer of the electrode, the electrode is completely dried in a subsequent drying step, which is aided by the increase in the exposed surface area of the electrode provided by the introduction of the depth structure.
2 more elements
A method for producing a functionalized structurized composition for a fuel cell, comprising:
- applying at least one electrode containing catalyst particles to a substrate layer in a coating step;
- and
- introducing a depth structure in an electrode surface facing away from the substrate layer in a radiation step by laser interference structurization,
- wherein the electrode is only partly dried in a drying step to form a dried marginal layer of the electrode that includes the electrode surface that faces away from the substrate layer, and the depth structure is introduced into the dried marginal layer of the electrode prior to complete drying of the electrode to increase an exposed surface area of the electrode, and
- wherein, after the depth structure is introduced into the dried marginal layer of the electrode, the electrode is completely dried in a subsequent drying step, which is aided by the increase in the exposed surface area of the electrode provided by the introduction of the depth structure.
2 more elements
Dependencies are inferred from the claim text.