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570
results.
Updated on
08/05/2025 [06:51:00]
Results 25 to 50 of 570
Absstract of: DE102023211051A1
Verfahren zum Herstellen einer Membran-Elektroden-Einheit (1) für eine elektrochemische Zelle (100) mit folgenden Verfahrensschritten:• Bereitstellen einer mit Elektroden (3, 4) beschichteten Membran (2),• Bereitstellen einer ersten Folie (11) und einer zweiten Folie (12), wobei beide Folien (11, 12) je einen Ausschnitt für den aktiven Bereich (35) der elektrochemischen Zelle (100) aufweisen, wobei mindestens eine der beiden Folien (11, 12) mit einem Klebemittel (13) versehen ist,• Einlaminieren der mit Elektroden (3, 4) beschichteten Membran (2) zwischen den beiden Folien (11, 12), wobei in einem Verklebebereich (23) die beiden Folien (11, 12) mittels des Klebemittels (13) direkt miteinander verklebt sind, so dass die beiden Folien (11, 12) eine Rahmenstruktur (10) für die Membran-Elektroden-Einheit (1) ausbilden,• Ausstanzen zumindest eines Medienanschlusses (30) aus der Rahmenstruktur (10) und gleichzeitiges Verschmelzen der beiden Folien (11, 12) in einem Verbindungsbereich (15) über zumindest einen teilweisen Umfang (33) des Medienanschlusses (30).
Absstract of: DE102023210846A1
Die Erfindung geht aus von einem Verfahren zu einem Betrieb einer Bearbeitungsvorrichtung (10a; 10b; 10c; 10d) mit zumindest einer Bearbeitungseinheit (12a; 12b; 12c; 12d), insbesondere Laserbohreinheit, wobei in zumindest einem Bearbeitungsschritt (20a; 20b; 20c; 20d) mittels der Bearbeitungseinheit (12a; 12b; 12c; 12d) zumindest eine Durchgangsausnehmung (14a; 14b; 14c; 14d) mittels eines Laserimpulses (22a; 22b; 22c; 22d) in das Substrat für eine elektrochemische Zelle (16a; 16b; 16c; 16d) eingebracht wird.Es wird vorgeschlagen, dass in dem zumindest einen Bearbeitungsschritt (20a; 20b; 20c; 20d) mittels der Bearbeitungseinheit (12a; 12b; 12c; 12d) zur Erzeugung einer einzelnen Durchgangsausnehmung (14a; 14b; 14c; 14d) zumindest ein weiterer Laserimpuls (24a; 24b; 24c; 24d) erzeugt wird, wobei der zumindest eine weitere Laserimpuls (24a; 24b; 24c; 24d), zu einer Bearbeitung mittels der Bearbeitungseinheit (12a; 12b; 12c; 12d), zumindest im Wesentlichen teilweise zeitlich überschneidend mit dem ersten Laserimpuls (22a; 22b; 22c; 22d) eingesetzt wird.
Absstract of: DE102023211042A1
Die Erfindung bezieht sich auf eine Membran-Elektroden-Einheit (4) für eine Anordnung elektrochemischer Zellen (10). Die Membran-Elektroden-Einheit (4) umfasst eine Membran (2), zwei Elektroden (1, 3), insbesondere eine erste Elektrode (1) und eine zweite Elektrode (3), einen Rahmen (15) und ein Verbindungselement (17) umfasst. Der Rahmen (15) weist einen Ausschnitt (18) für eine aktive Fläche (18) der Membran-Elektroden-Einheit (4) auf. Der Rahmen (15) ist mittels des Verbindungselements (17) mit der Membran (2) und/oder mit der ersten Elektrode (1) und/oder mit der zweiten Elektrode (3) verklebt. Der Rahmen (15) umfasst nur eine Folie (151). Der Rahmen (15) weist eine Verstärkungsschicht (170) auf.
Absstract of: DE102023210995A1
Die Erfindung betrifft ein Verfahren zum Betreiben eines Luftsystems (1) zur Versorgung mindestens eines Brennstoffzellenstapels (2) mit Luft, umfassend einen Zuluftpfad (3) und ein in den Zuluftpfad (3) integriertes Luftförder- und Luftverdichtungssystem (4) mit mehreren in Reihe geschalteten Welle-Rotor-Einheiten (5), deren Wellen (6) über Gaslager (7, 8) drehbar gelagert sind, ferner umfassend einen Abluftpfad (9) zum Abführen der aus dem Brennstoffzellenstapel (2) austretenden Luft sowie mindestens eine in den Abluftpfad (9) integrierte Drosseleinrichtung, vorzugsweise in Form einer Turbine (10) und/oder eines Druckregelventils. Erfindungsgemäß werden die Gaslager (7, 8) mit Luft temperiert, die- stromabwärts der in der Reihe letzten Welle-Rotor-Einheit (5) aus dem Zuluftpfad (3) oder- stromaufwärts der mindestens einer Drosseleinrichtung aus dem Abluftpfad (9)abgezweigt und in umgekehrter Reihenfolge den Gaslagern (7, 8) der Welle-Rotor-Einheiten (5) zugeführt wird, so dass zuerst die Gaslager (7, 8) der in Reihe letzten Welle-Rotor-Einheit (5) und anschließend die Gaslager (7, 8) der mindestens einen weiteren Welle-Rotor-Einheit (5) mit der Luft temperiert werden.Die Erfindung betrifft ferner ein Luftsystem (1) sowie ein Brennstoffzellensystem (20) mit einem erfindungsgemäßen Luftsystem (1).
Absstract of: EP4550490A2
A cell column includes vertically aligned stacks containing electrochemical cells separated by interconnects, fuel manifolds disposed between the stacks, a termination manifold disposed above an uppermost one of the stacks, and an inlet conduit and an outlet conduit fluidly connected to the fuel manifolds and the termination manifold. The termination manifold is an electrical terminal of the cell column, and includes a fuel channel configured provide fuel to the uppermost one of the stacks.
Absstract of: CN119452486A
The invention relates to a device and a method for determining a state (100) in a stack of fuel cells or electrolytic cells or in a fuel cell or electrolytic cell, in which at least one membrane electrode unit and plates are provided, between which in each case one membrane electrode unit is arranged, the inlet of the process medium from the periphery and the outlet of the process product into the periphery as well as the electrical input and output variables are modeled by means of a first model (102), the segments of the plate are modeled by means of a second model (104), and the membrane electrode unit or the segments of the membrane electrode unit are modeled by means of a third model (106), wherein the first model (102) and the second model (104) are coupled by means of at least one coupling variable (108, 110), the second model (104) and the third model (106) are coupled in sections by means of at least one coupling variable (112, 114), at least one input variable of the first model (102) is specified, the state (100) is determined by means of the at least one input variable, the first model (102), the second model (104) and the third model (106).
Absstract of: WO2024003169A1
The invention relates to a fuel cell system (1) comprising an expansion machine (2) with a high-pressure side (3a) and a low-pressure side (3b) for performing mechanical work, and comprising multiple fuel cells (4) stacked on top of one another, which communicate fluidically with the high-pressure side of the expansion machine (2) via a gas path (5), such that, during operation of the fuel cell system (1), exhaust gas discharged from the fuel cells (4) into the gas path (5) and containing water drives the expansion machine (2). The fuel cell system (1) comprises a water separator (6) arranged in the gas path (5) for separating water from the exhaust gas, and a valve unit (7) arranged between the water separator (6) and the high-pressure side (3a) of the expansion machine (2) for adjusting an amount of exhaust gas to be supplied to the expansion machine (2). The fuel cell system (1) also comprises a bypass gas path (8) through which the exhaust gas can flow, which branches off from the gas path (5) between the fuel cells (4) and the water separator (6) and fluidically communicates with the low-pressure side (3b) of the expansion machine (2), such that exhaust gas can bypass the expansion machine (2) via the bypass gas path (8). In addition, a bypass valve unit (9) is arranged in the bypass gas path (8) for adjusting the amount of exhaust gas flowing through the bypass gas path (8).
Absstract of: AU2023300562A1
Bipolar plates (1) adapted for use in an electrolyser cell stack (4) and wherein each plate comprises a plate midplane (2) whereby the plate (1) comprises spaced apart uniform spacers (7) extending in opposed directions from the midplane (2). All spacers (7) are arranged along concentric circles (8) in the midplane (2) with spacers (7) alternatingly protruding in opposite directions relative to the midplane (2) along each concentric circle (8) and an even number of spacers (7) are provided in each circumferential circle (8), apart from an innermost circle (9) which comprises a single spacer (7).
Absstract of: WO2024020614A1
The invention relates to a fuel cell system (50) comprising a fuel cell stack (40) and a flow assembly (30) for supplying a media flow (1) to the fuel cell stack (40). The flow assembly (30) has a flow section (10) which is fluidically connected to the fuel cell stack (40), and the flow assembly (30) additionally has a flow insert (20) which is arranged in the flow section (10), extends in a main direction of extent along the flow section (10), and has a flow inlet (24) for admitting the media flow (1) and at least one flow opening (22) that is formed on the flow insert (20) side (21) facing away from the fuel cell stack (40).
Absstract of: WO2024031115A2
The invention relates to a utility vehicle (11) comprising a chassis (14), a fuel cell (26) and a fuel cell cooling system (12), wherein the fuel cell cooling system (12) comprises: a coolant circuit (30) connected to the fuel cell (26) for guiding a coolant; a pump (32) for circulating the coolant; a heat exchanger (36) that is thermally connected to the chassis (14); a bypass line (38) that can be switched via a multi-port bypass valve (38) for bypassing the heat exchanger (36); and a control unit for switching the multi-port bypass valve (38).
Absstract of: EP4550483A1
The invention is related to a sealing device (10) for sealing a fuel cell (100) of a fuel cell stack of a fuel cell system, comprising a seal (30) for sealing a membrane electrode assembly (104) of the fuel cell (100) against a bipolar plate (102) of the fuel cell (100), and at least one limiter (20) for limiting a compression of the seal (30), wherein the at least one limiter (20) has a first limiter surface side (22) capable of contacting the bipolar plate (102), a second limiter surface side (24) capable of contacting the membrane electrode assembly (104) and a limiter lateral side (26), wherein the seal (30) has a first seal surface side (32) for sealing against the bipolar plate (102), a second seal surface side (34) for sealing against the membrane electrode assembly (104) and a seal lateral side (36), and wherein at least a part of the limiter lateral side (26) is mechanically connected to at least a part of the seal lateral side (36).
Absstract of: EP4550489A1
It is disclosed a green container microbial fuel cell (100) which integrates an electrochemical system, in particular a microbial fuel cell module (3), suitable to be installed in surfaces of infrastructures such as building roofs and walls, in which plants can grow to absorb water and provide thermal isolation and capable of producing electricity by oxidizing organic matter dissolved in water. It comprises a vessel (13) and the microbial fuel cell module (1) attached to the bottom of the vessel (13). This module (1) houses a microbial fuel cell (3) that has a planar configuration and comprises an anode (4) inoculated with electroactive microorganisms in contact with water containing organic matter, such as polluted water, an ionic exchange membrane (5) and an air cathode (6) in contact with ambient air. A vessel (13) with a closed side panel (14) holds substrate (15) in place, where plants can grow.
Absstract of: EP4550485A1
The present disclosure relates to a fuel cell system (110, 210) and a method for operating a fuel cell system in connection with start-up of the fuel cell system. The fuel cell system comprises:- an anode volume (124, 224) and a cathode volume (122, 222),- a fluid flow assembly (111, 211) comprising a plurality of fluid conduits and a fluid flow control device (113a, 113b, 213a, 213b), wherein a recirculation circuit (112, 212) is formed when a fluid connection between the anode volume and the cathode volume is enabled,- a hydrogen gas supply device (130, 230), and- a recirculation device (140, 240),the method comprising:- controlling the hydrogen gas supply device to supply the hydrogen gas,- regulating the fluid flow control device such that the anode volume is fluidly connected to the cathode volume,- controlling the recirculation device to recirculate the gas mixture in the fluid recirculation circuit such that the supplied hydrogen gas undergoes reaction with the residual oxygen during the recirculation.
Absstract of: EP4550481A1
The present invention relates to porous catalyst layers comprising a metal nanoparticle loaded porous carbon structure, wherein the porous carbon structure is assembled from porous spherical carbon particles with a particle size dispersity (Ð) of 1.2 or less, and with a templated pore size with a templated pore size dispersity (Ð') of 1.2 or less. The invention further relates to the method of production of such porous catalyst layer, electrodes obtained from such porous catalyst layers and their use in fuel cells or electrolysers.
Absstract of: GB2635186A
An electrochemical device has at least two insulating layers 162, 164, 166, 168 each having a first conductive through via 170, in electrical connection with a first conductive through via of the other insulating layer. The electrical connection between the first conductive through vias provides a first conductive bus (46, Figure 4) through the insulating layers. Each insulating layer also has a second conductive through via, in electrical connection with a second conductive through via of the other insulating layer. The electrical connection between the second conductive through vias provides a second conductive bus through the insulating layers. A component 162A located on or in one insulating layer is connected to the first conductive bus and a component 164A located on or in the other insulating layer is connected to the second conductive bus. A further electrochemical device has a plurality of insulating layers, each having conductive through vias which are aligned with one another and in series electrical contact to form a conductive bus through the layers so that in use an electrical continuity measurement can be made. The conductive bus can be used to measure a characteristic of the electrochemical device, such as a cell voltage.
Absstract of: EP4550487A1
A solid oxide fuel cell according to the present invention is provided with: a first electrode structure; an electrolyte layer that is superposed on the first electrode structure; and a second electrode structure that is superposed on the electrolyte layer. The first electrode structure comprises a first porous metal support layer and a first electrode layer. With respect to this solid oxide fuel cell, the first electrode structure is provided with: a filled part; and a first dam which is positioned outside the filled part when viewed along the stacking direction, while being densified so as to prevent the leakage of a filler to the outside of the filled part.
Absstract of: US2025118781A1
Provided herein generally are methods of accounting for hydrogen (H2) in a natural gas (NG) stream, i.e., a NG/H2 blend, from a public NG utility to residential and/or business facility fuel cell (FC) systems, where the NG/H2 blend powers the FC systems and the volume of NG/H2 blend supplied to each FC systems is measured. Such measurements along with other data of the operation of the FC system, such as the volume of NG/H2 blend or an increased volume of NG, can be reported or transmitted to the public NG utility for each residential and/or business facility FC system supplied with the NG/H2 blend, where a reduced carbon footprint can be determined for the use of the NG/H2 blend by the FC system(s).
Absstract of: WO2025045577A1
The present invention is related to a composite ion-exchange membrane and to a method of manufacturing said membrane. In particular, the non-porous ion-exchange membrane integrates an ion conductive polymer for application in alkaline water electrolysis application.
Absstract of: EP4550484A2
Es ist ein Verfahren (100) und ein System (10) zum Starten einer Brennstoffzelle bei Temperaturen unter 0° Celsius mit einem Zwei-Phasen-Kühlsystem angegeben, wobei das Zwei-Phasen-Kühlsystem eine Pumpe (20) zum Fördern eines im Zwei-Phasen-Kühlsystem vorliegenden Kühlmittels aufweist, wobei das Kühlmittel im Zwei-Phasen-Kühlsystem zumindest teilweise in einer Gasphase vorliegt, aufweisend die folgenden Schritte:Starten (102) der Brennstoffzelle (12),Aktivieren (104) der Pumpe (20) nach einem definierten Zeitraum, wobei während des definierten Zeitraums das Kühlmittel im Wesentlichen in der Gasphase innerhalb der Brennstoffzelle (12) vorliegt.
Absstract of: CN119256415A
Bipolar plate (1) intended for use in an electrochemical cell stack and consisting of two half-plates (2, 3) seated one on the other, the bipolar plate having: three ports (5, 6, 7) arranged adjacent to one another; an effective field (9); and a distribution field (8) connecting the ports (5, 6, 7) to the effective field (9) and designed to conduct three different fluids between the ports (5, 6, 7) and the effective field (9), in which a flow space for one of the fluids is formed between the half-plates (2, 3) and flow spaces for the other two fluids are formed on the outer sides of the half-plates (2, 3). The distribution field (8) comprises four flow fields (10, 12, 14, 16) of flat design, in particular each having the basic shape of a triangle:-a coolant flow field (10) leading to the central port (6); -two two-medium flow fields (12, 14), each adjoining the coolant flow field (10) at one end and leading at the other end to one of the two outer ports (5, 7), and each being designed for the coolant to flow together with the working medium as the other fluid in layers parallel to each other; -a three-medium flow field (16) adjoining the two two-medium flow fields (10), leading to the effective field (9), and designed for the coolant to flow together with the working medium as another fluid in three layers parallel to one another. Here, the half-plates (2, 3) are structured by an embossing structure (4), which is designed in the form of a point, i.e. An island, in each of the
Absstract of: WO2024002713A1
The present invention relates to a method for producing a carbon coating on a metal substrate, the metal substrate being chosen from the group consisting of stainless steel, carbon steel, galvanised steel, copper and aluminium, which method comprises the steps of: - depositing onto the metal substrate at least one thin intermediate metal layer having a thickness of less than 100 nm; - depositing a conductive carbon outer layer having a dry final thickness of between 1 and 50 µm, obtained by the sol-gel method; the nature of the metal substrate, of the intermediate layer and of the outer layer, as well as the thicknesses thereof, being chosen so as to obtain an interfacial contact resistance (ICR) of the coated substrate of less than 10 mΩ.cm2, at a compaction force of 100 Ncm-2.
Absstract of: CN119452171A
The invention relates to a side channel compressor (1) for a fuel cell system (31) for conveying and/or compressing a gaseous medium, in particular hydrogen, comprising: a housing (3) and a drive (6); a compressor chamber (30) which extends in the housing (3) about an axis of rotation (4) and which has at least one circumferential side channel (19, 21); the invention relates to a side-channel compressor (1) having a housing (3), a rotor chamber (44) in the housing (3), and a compressor wheel (2) in the rotor chamber, which compressor wheel is rotatably arranged about the axis of rotation (4) and is driven by means of the drive (6), the side-channel compressor (1) having at least one bearing (27, 47) on a cylindrical bearing tongue (12), and wherein the corresponding bearing (27, 47) is arranged in the rotor chamber (44). 47) has a bearing outer ring (24), a bearing inner ring (22) and a bearing inner chamber (40) which is sealed from the rotor chamber (44) by means of at least one sealing element (26). According to the invention, the bearing inner chamber (40) can be separated from the rotor chamber (44) by a sealing element (26) in such a way that either a frictional seal or a contactless seal can be established between the bearing inner ring (22) and the sealing element (26) depending on the operating state of the side channel compressor (1). The present application also relates to a fuel cell system (31) having the side channel compressor (1) of the present application.
Absstract of: WO2024002643A1
The present invention relates to a manufacturing method for manufacturing a single bipolar plate (200). The manufacturing method comprises: unrolling a material film (100) from a roll (101); and passing the material film (100) through a pair of rollers (107), wherein a movement of the material film (100) in the direction of passage to the pair of rollers (107) is braked in front of the pair of rollers (107) in order to tension the material film (100), and wherein a three-dimensional contour is moulded into the material film (100) by the pair of rollers (107), said contour extending both linearly and in a curved manner on all three spatial axes, and wherein the contour comprises a flow field (201), the flow field channels of which extend transversely to the direction of passage of the material film (100).
Absstract of: EP4550486A1
The present invention relates to a hydrogen injection module, intended for circulating a hydrogen flow rate in a supply circuit for fuel cells, comprising a main housing formed by a tubular body defining a longitudinal axis (L), said main housing being provided with an inlet and an outlet, between which and following a forward flow direction there is a particle filter member, a first safety shut-off solenoid valve and a second flow rate-regulating solenoid valve spaced apart from each other and housed in corresponding bores made in the main housing that run perpendicular to the longitudinal axis of the main housing, the first and second solenoid valves being in fluid communication with each other through a first passage channel having an angle of inclination with respect to the longitudinal axis (L) of the main housing, such that an inlet end of the first passage channel, which corresponds to the flow outlet point of the first solenoid valve, is located at a level below the outlet end of the first passage channel, which corresponds to the flow inlet point to the second solenoid valve.
Nº publicación: EP4547605A1 07/05/2025
Applicant:
STUDIENGESELLSCHAFT KOHLE GGMBH [DE]
Studiengesellschaft Kohle gGmbH
Absstract of: WO2024002789A1
The present invention refers to a process for preparing a graphitized nanoporous carbon, the so-obtained carbon particles and the use thereof as highly stable support for electrochemical processes.
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