Abstract: The present invention relates to high-temperature solid oxide fuel cells, in particular to rotationally symmetrical high-temperature solid oxide fuel cells. The inventive oxide-ceramic high-temperature fuel cell having one or more gas channel(s) open at at least one end. The fuel cell has a substrate surrounding the gas channel(s) at least sectionally, preferably completely. The gas channel(s) and/or the substrate surrounding the gas channel(s) has/have (a) changing cross-sections(s), preferably (a) conically tapering cross-section(s), seen in the direction of the longitudinal axis/axes of the gas channel(s).

Abstract: The present invention relates to a fuel cell system, in particular solid oxide fuel cell system (SOFC-System), with several tubular fuel cells, whereby several of these fuel cells respectively have at least one inner electrode, an electrolyte surrounding this/these inner electrode(s) at least in sections and at least one outer electrode surrounding the electrolyte at least in sections, so that the electrolyte spatially separates the inner and the outer electrode(s) from each other, at least two of these fuel cells are located or fixated in or on an electrically conducting carrier and/or contact, which connects—electrically conducting—the inner electrode(s) and/or one/several electrical contact(s) of one/several inner electrode(s) of a first tubular fuel cell or a part of such with the outer electrode(s) and/or one/several electrical contact(s) of one/several outer electrode(s) of a second tubular fuel cell or a part of such, whereby the second tubular fuel cell is preferably located directly adjacent to the f

Abstract: Fuel cell system with at least one burner that is arranged directly at a fuel cell, shaped at/on it, or in which a burner (7) is a separate element of a fuel cell system with more than one fuel cell (8) and this burner possesses the structure of a fuel cell or of a sealing element (5) of a fuel cell.

Abstract: The present invention relates to a fuel cell system, in particular solid oxide fuel cell system (SOFC-System), with several tubular fuel cells, whereby several of these fuel cells respectively have at least one inner electrode, an electrolyte surrounding this/these inner electrode(s) at least in sections and at least one outer electrode surrounding the electrolyte at least in sections, so that the electrolyte spatially separates the inner and the outer electrode(s) from each other, at least two of these fuel cells are located or fixated in or on an electrically conducting carrier and/or contact, which connects—electrically conducting—the inner electrode(s) and/or one/several electrical contact(s) of one/several inner electrode(s) of a first tubular fuel cell or a part of such with the outer electrode(s) and/or one/several electrical contact(s) of one/several outer electrode(s) of a second tubular fuel cell or a part of such, whereby the second tubular fuel cell is preferably located directly adjacent to the f

Abstract: A sealing arrangement comprising first and second machine elements which can turn relative to one another and delimit an installation space to be sealed for a sealing ring. The sealing ring has at least one static sealing area, which is connected, in a form-locking manner, by an anchoring bead, with a congruently shaped first indentation in the first machine element. The sealing ring has at least one dynamic sealing area with at least one first sealing lip that touches a first undercut of the second machine element with a sealing effect. The dynamic sealing area has at least one second sealing lip, which is connected with the first sealing lip by a connecting piece.

Abstract: A fuel cell system comprising at least one fuel cell unit (1) to generate electrical power and at least one component, upstream and/or downstream of said fuel cell unit in the anode flow path, said component preventing, as a reoxidation barrier, reoxidation of parts of the anode sections or of the anode sections as a whole in the case that an oxidizing gas is entering.

Abstract: A solid oxide fuel cell, wherein one of the electrodes of the fuel cell or an electrically conductive carrier, on which this electrode is applied, is designed as stabilizing substrate (1), in which multiple tubular hollows with preferably round, oval and/or square cross sections and with at least one open end are arranged, wherein the hollows are coated with at least an electrolyte (2) and at least the other, second electrode (3) of the fuel cell, and wherein at least one constructional element, hereinafter also denoted as constructional feature, is arranged on or at and/or integrated into the substrate, said constructional element being adapted for the integration of the fuel cell into a reactor.

Abstract: Fuel cell system with at least one burner that is arranged directly at a fuel cell, shaped at/on it, or in which a burner (7) is a separate element of a fuel cell system with more than one fuel cell (8) and this burner possesses the structure of a fuel cell or of a sealing element (5) of a fuel cell.

Abstract: The invention relates to a high-temperature fuel cell system comprising at least one fuel cell as heat generating source and/or at least one fuel cell system component as exothermic or endothermic source enclosed by a thermal insulation system. Between an inner thermal insulation unit and a radial outer shell at least one hollow space exists and this hollow space is evacuated or at least one fluid can be fed through and/or stored inside of the hollow space.