Abstract: Water is heated to a process temperature of an electrolyzer, e.g., more than 500° C. Then, the water is electrolyzed in the electrolyzer to form product gases hydrogen (H2) and oxygen (O2). The product gas hydrogen (H2) is compressed by a compressing apparatus and cooled by a cooling medium that feeds the thermal energy to heat the water.

Abstract: An energy storage device for a reversible storage of energy has a reversibly designed metal/metal oxide storage unit for indirectly storing energy in form of a fluid material and a reversibly designed electrolysis device for providing and using the fluid material in an electrolysis reaction. The metal/metal oxide storage unit is disposed spatially separated from the electrolysis device. A fluid exchanging unit is provided for exchanging the fluid material between the reversibly designed metal/metal oxide storage unit and the electrolysis device, and a heat exchanging unit is provided for exchanging thermal energy between the metal/metal oxide storage unit and the electrolysis device. Further, a method for a reversible storage of energy is provided.

Abstract: A battery has a cathode and an anode, between which a solid electrolyte is disposed. The battery has a process gas feed on the cathode side. The battery is characterized in that an electrically conductive supporting body is disposed on the cathode surface. At least one chamber connected to the anode has a porous, oxidizable material and a redox pair that is gaseous at an operating temperature of the battery.

Abstract: A high-temperature fuel cell system includes individual SOFC fuel cells which are in contact with each other for electrically connecting the same in parallel or in series. In at least one embodiment, contacting elements that are suitable for the fuel cell system with a certain flexibility in addition to the required electrical conductivity for continuous operation. The contacting elements between two fuel cells are formed by a metal wire mesh that is advantageously made of nickel. Such nickel wires can be mechanically transformed into a continuous mesh, especially a tube, from which sections having a suitable length can be cut and be provided with the proper shape.

Abstract: An electrical energy storage device is provided which comprises at least one module with a negative electrode, a positive electrode made from an anion generating material or material combination and conducting anions, and an anion conducting solid electrolyte located between the negative electrode and the positive electrode. The negative electrode of each module comprises a porous structure that conducts anions and the pore space of which is at least partially filled by a first redox mass which comprises a metal/metal oxide pair. The positive electrode of each module comprises a porous structure that conducts anions and the pore space of which is at least partially filled by a second redox mass which comprises a metal/metal oxide pair with an increased oxidation potential compared to the first redox mass.

Abstract: Disclosed is a high-temperature fuel cell system including individual SOFC fuel cells which are in contact with each other to be electrically connected in parallel or in series. Contacting elements are provided, in at least one embodiment, that are suitable for the fuel cell system with a certain flexibility in addition to electrical conductivity for continuous operation. The contacting elements are provided, in at least one embodiment, between two fuel cells with an outer, metallically conductive jacket and a ceramic core. For example, ceramic felts can be enveloped by a nickel net by adequately shaping the same.

Abstract: A combustion system with a burner and a membrane unit including a retentate side and permeate side for separating oxygen from air is provided. The permeate side of the membrane unit is connected to the burner via a line. A heat exchanger is connected in a combustion gas flow such that a hot combustion gas arising from fossil combustion is applied to the primary side of the heat exchanger and air applied to the secondary side of the heat exchanger is heated to a temperature required for operating the membrane unit and fed to the membrane unit. Further, a method for operating the combustion system is provided.

Abstract: A high-temperature fuel cell system includes individual SOFC fuel cells which are in contact with each other for electrically connecting the same in parallel or in series. In at least one embodiment, contacting elements that are suitable for the fuel cell system with a certain flexibility in addition to the required electrical conductivity for continuous operation. The contacting elements between two fuel cells are formed by a metal wire mesh that is advantageously made of nickel. Such nickel wires can be mechanically transformed into a continuous mesh, especially a tube, from which sections having a suitable length can be cut and be provided with the proper shape.

Abstract: A double-layer capacitor includes a first electrode having a first polarity, a second electrode having a second polarity, the first polarity being different from the second polarity, and an electrolyte that is in contact with the first electrode and the second electrode. The first electrode has a first charge of the first polarity and the second electrode has a second charge of the second polarity, and maximum values of the first charge and the second charge are substantially equal.

Abstract: Disclosed is a high-temperature fuel cell system including individual SOFC fuel cells which are in contact with each other to be electrically connected in parallel or in series. Contacting elements are provided, in at least one embodiment, that are suitable for the fuel cell system with a certain flexibility in addition to electrical conductivity for continuous operation. The contacting elements are provided, in at least one embodiment, between two fuel cells with an outer, metallically conductive jacket and a ceramic core. For example, ceramic felts can be enveloped by a nickel net by adequately shaping the same.

Abstract: What is proposed is a double-layer capacitor with at least a first and a second electrode, wherein the maximum charges of the two electrodes are matched. In such a double-layer capacitor according to the invention, the amount of material used per maximum storable electric charge and energy is minimal.

Abstract: A high temperature fuel cell has a cathode which comprises at least a first layer and a second layer disposed on one side of the first layer, in which the first layer contains 30 to 60% by weight of a first electrolyte made up of zirconium oxide ZrO2 and at least one proportion of scandium oxide Sc2O3, and the second layer comprises substoichiometric lanthanum strontium manganate having the formula LaxSryMnO3 in which the sum of x and y is less than 1. By means of this, a high ionic conductivity is achieved for the cathode (6). The ionic conductivity further remains substantially constant as a function of the operating time t.

Abstract: To improve stability and efficiency of a high-temperature solid-electrolyte fuel cell of planar multilayer design, it is proposed to increase the effective interface between the electrolyte layer and an electrode layer. This is achieved by a suitably treated surface of the electrolyte layer or by a porous and/or rough interlayer.

Abstract: A process for sealing leaks gas spaces and/or gas channels between individual components of high-temperature fuel cells, includes introducing at least first and second and optionally further different gases at high temperature from the outside into the gas spaces and/or gas channels to be sealed off from one another, for flushing every leak with the first gas on one side and with the second or further gas on the other side. The first gas contains at least one gaseous compound that can be oxidized to form a metal ion-conducting and/or an oxygen ion-conducting oxide, and the second and optionally further gas contains oxygen and/or is able to give off oxygen. The first gas contains at least one oxidizable compound of at least one of the metals of an electrolyte material, a bipolar plate and electrodes of the fuel cells, and/or one element of the group including zirconium, nickel, calcium, magnesium, cerium and rare earth metal.

Abstract: A structural assembly includes an elongated support member having an end and a wall extending from the end. The wall has therein, at a location spaced from the end, a transverse opening. An elongated beam is positioned to be connected to the support member at the end thereof, the beam having first and second surface portions. An angle-shaped joining member has first and second outwardly extending wings. The first wing has at least one transverse projection, which extends through the transverse opening in the wall of the support member. The second wing has first and second surfaces. The second wing extends along the beam with the first surface of the second wing confronting the first surface portion of the beam.