Catalytically active layer
AssigneeRobert Bosch GmbH
InventorsHans-Martin Wiedenmann, Frank Stanglmeier, Karl-Hermann Friese
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Abstract
A catalytically active layer that is used, for example, as an electrode for a solid electrolyte-based sensor element of a gas sensor for determining a gas component in a gas mixture. The catalytically active layer includes a metallic component, that includes a noble metal in the form of platinum, rhodium, and/or palladium, and additionally a base metal. At least a portion of the originally present base metal is replaced by cavities in the metallic component.
Claims13
A catalytically active layer, comprising:
- a metallic component that includes a noble metal in a form of at least one of platinum, rhodium, and palladium, and a base metal, at least a portion of an originally present base metal being replaced by cavities in the metallic component.
An electrode for a solid electrolyte-based sensor element of a gas sensor for determining a gas component in a gas mixture, comprising:
- a catalytically active layer including a metallic component, the metallic component including a noble metal in a form of at least one of platinum, rhodium, and palladium, and a base metal, at least a portion of an originally present base metal being replaced in the metallic component.
A method of manufacturing a catalytically active layer including a metallic component, comprising:
- bonding at least one of platinum, rhodium, and palladium as a noble metal with a base metal to form the metallic component;
- and
- forming a plurality of cavities in the metallic component by dissolving the base metal, at least partially, from the metallic component.
A method of manufacturing an electrode of a solid electrolyte-based sensor element of a gas sensor for determining a gas component in a gas mixture, comprising:
- bonding at least one of platinum, rhodium, and palladium, as a noble metal with a base metal to form a metallic component;
- and
- forming a plurality of cavities in the metallic component by dissolving the base metal, at least partially, from the metallic component.
Dependencies are inferred from the claim text.