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495
resultados
Última actualización
29/08/2025 [06:49:00]
Resumen de: US2025273700A1
Multi-cell electrochemical reaction cell structure for a flow battery or fuel cell having a plurality of cells electrically connected in series or parallel. A first housing has a pair of mating end plates assembled together, each forming a plurality of recesses in which one of the cells is received. One of the end plates has a projection along its perimeter and the other one of the end plates has a groove along its perimeter. The projection is configured to fit within the groove in a mating relationship to seal the housing when the end plates are engaged with each other. A second housing is a tubular shell in which a plurality of tubular flow cell units electrically connected in parallel are housed. Catholyte flows in the tubular flow cell units and anolyte flows in the tubular shell.
Resumen de: DE102024201652A1
Die Erfindung geht aus von einer Brennstoffzellenvorrichtung (10a; 10b), insbesondere SOFC-Brennstoffzellenvorrichtung, mit zumindest einer Brennstoffzelleneinheit (12a; 12b), mit einer Fluidzuführungseinheit (14a; 14b), welche dazu vorgesehen ist, der Brennstoffzelleneinheit (12a; 12b) zumindest ein sauerstoffhaltiges Fluid (16a; 16b) zuzuführen, und mit zumindest einer, insbesondere von einer Heizeinheit verschiedenen, Funktionseinheit (18a; 18b), welche mit der Brennstoffzelleneinheit (12a; 12b) funktionstechnisch verbunden ist.Es wird vorgeschlagen, dass die Brennstoffzellenvorrichtung (10a; 10b) eine mit der Fluidzuführungseinheit (14a; 14b) thermisch gekoppelte Wärmerückgewinnungseinheit (20a; 20b) aufweist, welche dazu vorgesehen ist, Abwärme der Funktionseinheit (18a; 18b) zur Erwärmung des sauerstoffhaltigen Fluids (16a; 16b) zu nutzen.
Resumen de: US2025273699A1
A system for modifying one or more surfaces of a bipolar plate for a fuel cell includes a bipolar plate having a first surface and a second surface opposing the first surface, and a plasma generator configured to generate plasma from a source gas including at least one non-film-forming gas for contacting the first surface of the bipolar plate to modify at least a portion of the first surface into a hydrophilic surface to attract water and/or spread water across the first surface of the bipolar plate. Other example systems, processes for modifying one or more surfaces of fuel cell bipolar plates, and fuel cell bipolar plates are also disclosed.
Resumen de: US2025273698A1
The invention relates to a bipolar plate for a fuel cell made of two plate halves with mutually facing surfaces and aligning elements in the region of said surfaces, which have elevations with a height and corresponding depressions with a depth. The invention is characterized in that all of the elevations and corresponding depressions have a greater extension in the longitudinal direction than in the transversal direction, wherein four of the corresponding parts of the aligning elements are arranged on each of the surfaces, two respective parts of the parts lying on a common straight line and having the same orientation.
Resumen de: US2025273696A1
Provided is a method for manufacturing a fuel cell catalyst ink, which can reduce foaming of the catalyst ink without changing material properties. A method for manufacturing a fuel cell catalyst ink containing a catalyst, an ionomer, and a solvent containing water and an alcohol includes kneading the fuel cell catalyst ink with a bead mill. The solvent has a weight ratio (A/W) of the alcohol A to water W of 0.33 to 3.00. The method further includes defoaming bubbles in the fuel cell catalyst ink after the kneading.
Resumen de: US2025273721A1
A ring-shaped solid oxide fuel cell assembly, for an aircraft engine, with a ring-shaped inner manifold, a ring-shaped outer manifold arranged coaxially around the inner manifold, wherein one of the manifolds comprises a hydrogen inlet and the other comprise a hydrogen outlet, a plurality of tubular solid oxide fuel cells arranged radially between the manifolds, wherein each fuel cell comprises an anode formed as an inner tube, an inner end fluidly connected to the inner manifold and an outer end fluidly connected to the outer manifold, a cathode formed as an outer porous tube around the anode, and, between, the anode and the cathode, an electrolyte. For each fuel cell, an inner electrical contact electrically connects at the inner end of that fuel cell to the anode or the cathode, and an outer electrical contact electrically connects at the outer end to the other.
Resumen de: US2025273716A1
The present invention relates to a fuel cell system (100) for converting energy. The fuel cell system (100) comprises a fuel cell stack (101) having a plurality of fuel cells, a recirculation path (105) fluidically connected to a cathode tract (103) of the fuel cell stack (101), an air system (111) for supplying air to the fuel cell system (100), at least one actuator (107, 123), and a computing unit (109).
Resumen de: US2025273717A1
A fuel cell system (FC system) includes a fuel cell stack (FC stack) that generates power by reaction between fuel gas and oxidant gas, an oxidant gas supply device that supplies the oxidant gas to the fuel cell stack, an oxygen concentration acquisition unit that acquires an oxygen concentration in the fuel cell stack, and a voltage control unit that controls a voltage of the fuel cell stack, in which the voltage control unit changes a reduction rate of the voltage of the fuel cell stack according to the oxygen concentration when the fuel cell system is to be stopped.
Resumen de: US2025273695A1
Supported catalyst systems comprise a bimodal nanoporous support, the support comprising: a plurality of porous bodies connected by interconnecting structures, wherein the porous bodies have primary pores throughout their structures, the primary pores defined by a first average pore diameter; and wherein the spaces between the interconnected porous bodies define secondary pores having a second average pore diameter; and catalyst deposits (e.g., comprising Pt) within the primary pores. The first average pore diameter is less than or equal to 20 nm, and the second average pore diameter is greater than 20 nm. The supported catalyst system further comprises an ionomer deposited onto the supported catalyst system, wherein the ionomer is localized to the secondary pores and the exterior surfaces of the porous bodies and interconnecting structures but does not enter the primary pores or contact the catalyst deposits inside the primary pores.
Resumen de: US2025273705A1
A system and method of recreating ground conditions for a fuel cell system for use in a vehicle includes providing a fuel cell system, a compressor, a heat exchanger, a first turbine, a second turbine, and an electric motor drivingly connected to the compressor, the first turbine, and the second turbine along a common shaft. The method requires receiving air at an ambient pressure and temperature, compressing the air via the compressor, and discharging the compressed air into the fuel cell via the heat exchanger. The fuel cell generates an exhaust flow which is then expanded and cooled in the first turbine, heated via the heat exchanger, and then expanded and cooled in the second turbine and expelled at a pressure substantially equal to the ambient pressure.
Resumen de: US2025273712A1
A fuel cell apparatus control method includes at least two of the steps of: reducing an output of a fuel cell apparatus that generates power using hydrogen from a hydrogen reservoir device upon a decrease in an amount of hydrogen in the hydrogen reservoir device; reducing the output of the fuel cell apparatus upon an increase in a temperature of a heating medium that collects exhaust heat from the fuel cell apparatus; and reducing the output of the fuel cell apparatus upon an increase in an air temperature inside or outside a housing of the fuel cell apparatus. In this control method, when the at least two of the steps are all executed, the output of the fuel cell apparatus is reduced by a largest one of amounts of output reduction of the fuel cell apparatus executed by the respective steps.
Resumen de: US2025273704A1
To provide a fuel cell where no adhesive is used to bond an electrode layer and a gas diffusion layer to each other and a method for manufacturing the fuel cell. A fuel cell includes an electrode layer and a gas diffusion layer bonded to the electrode layer, in which the electrode layer includes an ionomer, the gas diffusion layer includes ionomer particles in at least a part of a surface facing the electrode layer, the ionomer particles are identical to the ionomer included in the electrode layer, and the ionomer particles are spray-applied.
Resumen de: US2025273702A1
Bipolar plates having two short sides, and two long sides for air-cooled fuel cells. The bipolar plate comprises an anode plate, a cathode plate, and an anode gas inlet an anode gas outlet. The anode plate and the cathode plate are connected to each other so that gaseous heat carrier distribution channels are formed therebetween such that, when a gaseous heat carrier is supplied, a time period through a hal of the bipolar plate near to the edge of the first long side is less than a time period through a half of the bipolar plate near to the edge of the second long side. The technical effect of the proposed invention is a reduced consumption of cooling air, reduced power consumption, dimensions and weight of a fuel cell cooling system, improved uniformity of bipolar plate cooling, which results in increased capacity and a longer service life of a fuel cell.
Resumen de: US2025273703A1
Method for manufacturing a bipolar plate (10, 51) for an electrochemical cell unit (53) for converting electrochemical energy into electrical energy as a fuel cell unit (1) and/or for converting electrical energy into electrochemical energy as an electrolytic cell unit (49) having stacked electrochemical cells (52), said method comprising the following steps: providing a first plate (64) and a second plate (65); stacking the first plate (64) and the second plate (65), one atop the other, such that inner surfaces (66) of the first and second plates (64, 65) lie one atop the other, and an intermediate space (79) is formed between the first and second plates (64, 65), fluid-tightly sealing the intermediate space (79) with respect to the surroundings using at least one sealing means (84) for preventing the inflow of a fluid from the surroundings into the interior space (79); applying contact forces to the first and/or second plate (64, 65) so that, as a result of the applied contact forces, the inner surfaces (66) of the first and second plates (64, 65) lie, one atop the other, with an additional compressive force in a contact region (68) due to the applied contact forces by applying a negative pressure to the intermediate space (79) relative to an ambient pressure, said negative pressure in the intermediate space (79) causing the contact forces applied to the first and/or second plate (64, 65) to be applied to the first and/or second plate (64, 65) by the ambient pressure; and p
Resumen de: US2025273697A1
The present disclosure is generally directed to a discharge cathode of a metal-air battery. A method of fabricating the discharge cathode includes forming a frame of electrically insulating material onto a terminal with a first end portion of the terminal exposed in a window defined by the frame and a second end portion of the terminal outside of the frame. The method includes positioning a gas diffusion electrode (GDE) on the frame with a busbar supported on the GDE and a bus tab extending from the busbar to the window. The method includes connecting the bus tab and the first end portion of the terminal to one another through the window. The method includes, with the bus tab and the terminal connected to one another, hermetically sealing the window.
Resumen de: US2025273707A1
A sensor unit for a fluid conduction unit used for discharging liquid, for example for a fluid conduction unit used for discharging liquid from a fuel cell device, wherein the sensor unit comprises the following: at least one liquid level detection zone.
Resumen de: US2025273720A1
An apparatus and method for manufacturing a membrane-electrode assembly enable decal transfer to be effectively performed by lowering a glass transition temperatures of ion-conductive polymers included in an electrolyte membrane material and electrodes by spraying a sprayable material onto at least one of the electrolyte membrane material or each of the electrodes.
Resumen de: US2025273719A1
An ion-exchange membrane comprisinga resin composition comprisinga side-chain heteroaromatic resin having a structural unit represented by the following general formula 1:wherein,R1, R2, and R3 are each optionally the same or different, and are each a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 10 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group having 6 to 10 carbon atoms,R4 is a direct bond, a substituted or unsubstituted divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 10 carbon atoms, andHc is a substituted or unsubstituted heteroaromatic group having 4 to 30 carbon atoms, the group having at least one nitrogen atom in a heteroaromatic ring structure and containing a five-membered ring and/or six-membered ring structure, anda cation-exchangeable resin.
Resumen de: US2025273718A1
An operation controller of a fuel cell and an operation control method thereof in a system for generating a drive output through a fuel cell and a battery includes a processor for selectively performing a driving stop control of the fuel cell through an operation variable including a required drive output and a load weight.
Resumen de: US2025273715A1
The present application relates to a warming-up control method for a fuel cell system in a starting process and a fuel cell system, applied to the technical field of fuel cells. The method includes: starting the fuel cell system, turning on a small-cycle cooling circuit, and pull-loading an output power to a first power; in response to an inlet temperature of a stack reaching a first temperature, rotating a three-way valve at a first rotating rate; calculating a variance of a cell voltage value; in response to the variance being smaller than a third threshold and reducing the variance to be within the first threshold, returning to the rotating the three-way valve at the first rotating rate until all turn-on of a large-cycle cooling circuit and all turn-off of the small-cycle cooling circuit; pull-loading the output power to a rated power.
Resumen de: US2025273713A1
In order to control the performance of the fuel cell stack being pressurized by the restraining member, the deterioration of the fuel cell stack is evaluated so as to reduce the pressurizing force by the restraining member when the deterioration of the fuel cell stack can be acknowledged. By doing so, deterioration in performance of the fuel cell stack can be suppressed, and the service life can be extended.
Resumen de: US2025273708A1
A redox flow battery (RFB) is provided. The battery generally includes a catholyte including cerium ions, an anolyte including titanium ions, a porous cathode in contact with the catholyte, a porous anode in contact with the anolyte, and an ion exchange membrane positioned between the cathode and the anode, where the anode has a higher surface area than the cathode or the anode has a thickness greater than a thickness of the cathode, where the membrane is configured to restrict and/or prevent the passage of the cerium ions and/or the titanium ions and maintain ionic conductivity between the catholyte and the anolyte. A method for storing electricity and a method for generating an electrical current are also provided.
Resumen de: US2025273714A1
After a value of a thermodynamic property of fuel in a manifold remains same, while each of a plurality of fuel tanks is sequentially fluidly coupled to the manifold, and less than the value during previous operation of a stack, a controller prevents at least one of the fuel tanks from providing fuel to the stack during subsequent operation of the stack.
Resumen de: AU2024247425A1
The present invention relates to a composition comprising about 90% to about 99.99% by weight of one or more non-crosslinked fluorinated sulfonyl fluoride polymers and about 0.01% to about 10% by weight of one or more precious metal catalyst, based on the total weight of the composition, where the one or more precious metal catalyst is uniformly distributed throughout the one or more non-crosslinked fluorinated sulfonyl fluoride polymer. Such a composition may be formed, for example by extrusion, into a cation exchange precursor and, after treatment, a cation exchange membrane. The resulting films and membranes have precious metal catalyst uniformly distributed throughout the layer of catalyst-containing polymer.
Nº publicación: US2025270087A1 28/08/2025
Solicitante:
HALLIBURTON ENERGY SERVICES INC [US]
Halliburton Energy Services, Inc
Resumen de: US2025270087A1
Provided are methods and systems to convert a one-carbon-containing molecule through pyrolysis reactions into solid carbon and molecular hydrogen gas without emission of carbon dioxide. The methods may include converting the one-carbon-containing molecule into electricity with a co-production of carbon dioxide, pyrolyzing at least methane to produce at least carbon and hydrogen, and reacting at least a portion of the carbon dioxide and at least a portion of the hydrogen to produce at least additional one-carbon-containing molecule. In other examples, the methods may include pyrolyzing methane to produce at least solid carbon and hydrogen, feeding at least a portion of the hydrogen to a fuel cell to produce electricity and heat, capturing at least a portion of the heat from the fuel cell, preheating the methane prior to the pyrolyzing with the captured heat from the fuel cell, and powering oilfield equipment with at least a portion of the electricity.
BOPI
Sede Electrónica
