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488
results.
Updated on
16/09/2025 [06:48:00]
Results 375 to 400 of 488
Absstract of: US2025279452A1
The invention relates to a method for humidifying air in a supply air path (2) of a fuel cell system (1) by means of water injection, wherein product water produced on the cathode side is used, with said product water being separated from the humid exhaust air introduced into the exhaust air path (3) with the aid of a water separator (4) integrated into the exhaust air path (3), wherein, depending on the load, the liquid water content of the exhaust air is varied by means of the temperature of the exhaust air.The invention also relates to a device for humidifying air in a supply air path (2) of a fuel cell system (1) and to a fuel cell system (1) comprising a device according to the invention.
Absstract of: US2025279446A1
A method for implementing an ammonia-burning fuel-cell system, which comprises: a) operating a fuel-cell unit; b) recovering a dinitrogen-and dihydrogen-rich anode gas stream; c) cooling the anode gas stream and condensing the water present in the gaseous anode stream to form a cooled gaseous anode stream; d) separating the cooled gaseous anode stream into a dinitrogen gas stream; and a dinitrogen-depleted anode stream; and e) injecting the dinitrogen-depleted anode stream; into the fuel cell unit so as to recycle the dinitrogen-depleted anode stream in the fuel cell unit.
Absstract of: US2025279456A1
A connector device for a fuel cell stack is provided. Furthermore, a fuel cell stack is provided, comprising at least one such connector device. The connector device includes a scissor lifting mechanism having at least two mechanically coupled pairs of scissor elements and at least three contact modules arranged equidistantly from one another on the scissor lifting mechanism, wherein each contact module is set up and arranged to be electrically coupled to an electrically conductive element of the fuel cell stack.
Absstract of: US2025279443A1
A system comprising: a gas turbine having a combustion chamber and a turbine; a first heat exchanger configured to receive a first stream of compressed air and a stream of liquid hydrogen, wherein the first heat exchanger is configured to transfer heat between the first stream of compressed air and the stream of liquid hydrogen to yield a stream of liquid oxygen and a stream of gaseous hydrogen; a second heat exchanger configured to heat the stream of liquid oxygen to yield a stream of gaseous oxygen; and a third heat exchanger configured to receive a stream of flue gas from the turbine and at least one of the stream of gaseous hydrogen and the stream of gaseous oxygen, wherein the third heat exchanger is configured to transfer heat between the stream of flue gas and the stream of gaseous hydrogen and/or the stream of gaseous oxygen to superheat the stream of hydrogen and/or the stream of oxygen; wherein the system is configured to direct the stream of hydrogen and the stream of oxygen to the combustion chamber, wherein at least one of the stream of hydrogen and the stream of oxygen is superheated.
Absstract of: US2025279454A1
A primary objective of the present invention is solid-oxide cell structures, interconnect structures, stack structures, and methods that symbiotically maximize durability, scaled manufacturability, device efficiency, and cost-efficiency for large area cell structures, particularly for Intermediate-temperature (IT) Solid-Oxide-Cell and Low-Temperature-Solid-Oxide-Cell applications, wherein rolled-alloy-based micro-cells are formed in dense arrays.
Absstract of: US2025279449A1
A cooling system for a fuel cell that cools a fuel cell stack and an intercooler includes a radiator, a stack cooling circuit, an intercooler cooling circuit, a bypass channel, a flow regulating valve that regulates a flow diversion ratio to the bypass channel, a first temperature sensor, a second temperature sensor, and a control device that performs an abnormality monitoring process of monitoring the cooling system for an abnormality. The abnormality monitoring process includes a first determination process of determining that there is an abnormality when the flow diversion ratio of the flow regulating valve is 100 percent and the difference between the detected value by the first temperature sensor and the detected value by the second temperature sensor is equal to or greater than the first predetermined value.
Absstract of: US2025279447A1
The present invention relates to a membrane humidifier for a fuel cell, which can prevent a decrease in humidification efficiency due to a pressure difference between the inside and outside of a membrane humidifier, the membrane humidifier for a fuel cell, according to an embodiment of the present invention, comprising: a middle case having a module insertion part inside; a cap case coupled to the middle case; a hollow fiber membrane module inserted to the module insertion part; and a pressure buffer part between the inner wall of the middle case and the module insertion part.
Absstract of: US2025279445A1
A fuel ejector is disclosed to provide gaseous fuel to a fuel cell. The fuel ejector includes an ejector body having first and second fluid inlets and a mixing volume. A nozzle is removably engaged to the ejector body in axial alignment with the first fluid inlet. The nozzle is axially adjustable in position with shims to position the nozzle inlet at a desired location within the mixing volume. A sleeve may also be selected and positioned in the first inlet to establish a throat diameter.
Absstract of: US2025279451A1
A fuel cell system includes: a fuel cell stack that generates electric power by using a chemical reaction of anode gas and cathode gas; a temperature measurement section that measures temperature of the fuel cell stack; a depressurization section; and an operation control section that controls the fuel cell stack and the depressurization section. The fuel cell stack includes a cathode gas channel in which the cathode gas flows. The depressurization section allows the cathode gas channel to be depressurized. When the operation control section stops the operation of the fuel cell stack, the operation control section controls the depressurization section to cause the depressurization section to depressurize the inside of the cathode gas channel until pressure inside the cathode gas channel falls below the saturated water vapor pressure corresponding to the temperature of the fuel cell stack measured by the temperature measurement section.
Absstract of: US2025279455A1
The electrochemical cell device includes a cell, a support body, and a fixing member. The cell has a first end and extends from the first end in a first direction. The support body supports one end portion of the cell including the first end. The fixing member is located between the cell and the support body and is in contact with a first surface of the cell along the first direction and a second direction intersecting the first direction. The first surface includes a contact area in contact with the fixing member and a non-contact area not in contact with the fixing member. The contact area has a second end on the first end side. A length in the first direction from the second end to the non-contact area on a side opposite to the first end is larger at a second part located at an end portion in the second direction than at a first part located at a center portion in the second direction.
Absstract of: US2025279448A1
A fuel cell is provided including an anode configured to receive, and allow to pass through, an anode process gas, a cathode configured to receive, and allow to pass through, a cathode process gas, and an electrolyte matrix layer separating the anode and the cathode. One of the anode or the cathode has an extended edge seal chamber, and the fuel cell is configured to receive the anode process gas and the cathode process gas in substantially perpendicular directions relative to each other, and the extended edge seal chamber is configured to allow the anode process gas and the cathode process gas to pass through the anode and the cathode in substantially parallel flow paths.
Absstract of: US2025279450A1
The fuel cell system includes a fuel cell, a fuel gas tank, a gas flow path, a pressure reducing valve, a pressure sensor for acquiring the pressure of the gas on the side of the fuel cell with respect to the pressure reducing valve, an operation storage unit for storing the length of the deactivation period of the fuel cell system, and a control unit. The control unit performs start control for starting the operation of the fuel cell when the first start condition including that the pressure acquired by the pressure sensor is smaller than the first pressure threshold is satisfied, and performs start control when the second start condition including that the pressure acquired by the pressure sensor is larger than the first pressure threshold and the length of the pause period stored in the operation storage unit is larger than the pause threshold is satisfied.
Absstract of: US2025279444A1
A cooling system for a fuel cell onboard a vehicle includes a coolant circuit and an evaporative cooling device including an evaporation chamber and a thermally conductive conduit extending through the evaporation chamber. The coolant circuit is configured to circulate a coolant through the coolant circuit and through a portion of the fuel cell. The thermally conductive conduit has an inner surface that at least partially defines a coolant channel in fluid communication with the coolant circuit and an opposite outer surface exposed to an environment within the evaporation chamber. When a working fluid is applied to the outer surface of the thermally conductive conduit within the evaporation chamber. the evaporative cooling device is configured to evaporatively cool the coolant flowing through the coolant channel by promoting evaporation of the working fluid from the outer surface of the thermally conductive conduit.
Absstract of: US2025279441A1
A fuel cell includes a flow field plate having at least one channel and at least one land, each of the at least one channel being positioned between two adjacent lands. The fuel cell further includes a catalyst layer. The fuel cell also includes a gas diffusion layer (GDL) positioned between the flow field plate and the catalyst layer. The catalyst layer has a first region aligned with the at least one channel and a second region aligned with at least one land. The first region has a first composition, a first carbon material, and a first carbon ratio of an amount of the first composition to the first carbon material. The second region has a second composition, a second carbon material, and a second carbon ratio of an amount of the second composition to the second carbon material. The first carbon ratio is different than the second carbon ratio.
Absstract of: US2025279442A1
Disclosed is an end cell heater for a fuel cell, including a heater plate; a power supply terminal coupled to the heater plate; a first electrode terminal coupled to a first end of the terminal; a heating element stacked on the heater plate; and a second electrode terminal coupled to the heating element and coupled corresponding to the first electrode terminal, wherein the heater plate includes a terminal guide protruding to surround the first electrode terminal, thereby ensuring electric connection between the first electrode terminal and the second electrode terminal.
Absstract of: US2025279439A1
Efficient and robust bifunctional electrocatalysts for both the oxygen reduction reaction and oxygen evolution reaction are required for renewable energy technologies such as fuel cells, water electrolysers and rechargeable metal-air batteries. To address this requirement an electrode is provided comprising carbon sphere chains (CSCs) upon a current collector, wherein the CSCs have a functionalized surface bearing oxygen-containing functional groups and manganese oxide (MnOx) nanorods attached to the functionalized surfaces of the CSCs. A manufacturing sequence for these electrodes is provided comprising providing a current collector having a surface that is catalytically active towards the growth of CSCs, growing CSCs on the catalytically active surface, functionalizing the surface of the CSCs, and growing MnOx nanorods on the functionalized surface.
Absstract of: WO2025180601A1
The present invention relates to an electrically conductive component, such as a bipolar plate, a half plate, an electrode and a gasket, the electrically conductive component comprising: a metal component; an adhesion layer optionally formed on the metal component; and a carbon coating formed on the adhesion layer, if provided, or on the metal component; wherein the carbon coating comprises an amorphous, at least substantially hydrogen free DLC layer and at least one nanocrystalline graphite component embedded in said amorphous, at least substantially hydrogen free DLC layer; wherein the at least one nanocrystalline graphite component comprises two or more stacked layers; and wherein the nanocrystalline graphite component is aligned perpendicular to and/or at least substantially perpendicular to an axis A defined by an interface between the carbon coating and the metal component or an interface between the carbon coating and the adhesion layer, if provided.
Absstract of: 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.
Absstract of: WO2024089160A1
The invention relates to a method for running in a PEM fuel cell, the method comprising at least a first running-in phase (P2), followed by an operation of reversing the direction of the dihydrogen and air streams (P3), and then a second running-in phase (P4). The running-in phases each comprise a step (4) of stabilizing the fuel cell in which the current density produced by the cell is kept constant at a low value for a given duration, followed by an oxygen depletion step (5), during which the current density is kept constant at a minimum value, lower than or equal to the low value, and during which the air supply is at least partially interrupted, being adjusted so as to obtain a cathode stoichiometry coefficient of strictly less than 1. The oxygen depletion steps of the first and second running-in phases end when the cell voltage of the fuel cell reaches a predefined threshold voltage.
Absstract of: JP2025128902A
【課題】優れた特性を有する触媒を提供する。【解決手段】触媒１は、白金と８族元素、９族元素、及び１０族元素のうちいずれか１つ以上との合金を含むロッド２と、ロッド２を担持する束状のカーボンナノチューブ３と、を含み、ロッド２のうち少なくとも一部は、カーボンナノチューブ３の間の溝に存在する。【選択図】図１
Absstract of: TW202436820A
The present invention relates to a stack of substantially flat plates stacked one on top of the other along a stacking direction. The substantially flat plates define at least a first plate interspace between a first plate and an opposing second plate of the stack. One of the plates in the first plate interspace defining a first ridge protruding a first distance in the first plate interspace. The first distance is less than the thickness of the plates in the first plate interspace. The plates in the first plate interspace being permanently joined at the first ridge.
Absstract of: CN120092334A
The invention relates to a plate-like component for a fuel cell stack, in particular a separator, a cathode end plate, an anode end plate, a half-shell of a separator, a half-shell of a cathode end plate, a half-shell of an anode end plate, or a frame for holding a membrane electrode assembly, the surface of the plate-like component having at least three regions adjoining one another, and at least three adjacent regions forming at least a part of the position mark, the respective adjacent regions of the at least three adjacent regions being configured such that the respective adjacent regions have a different average reflectance at least in the visible light range when the surface is viewed in a predetermined direction.
Absstract of: EP4610478A2
A hydrogen fuel system (200) including a fuel delivery assembly (202), a purge gas source (310), and a vent opening (324). The fuel delivery assembly (202) is configured to receive hydrogen fuel from a hydrogen fuel source (210) and to provide the hydrogen fuel from the hydrogen fuel source (210) to a power generator. The purge gas source (310) is fluidly coupled to the fuel delivery assembly (202) and configured to provide a purge gas to the fuel delivery assembly (202). The vent opening (324) is fluidly coupled to the fuel delivery assembly (202) and configured to vent hydrogen fuel from the fuel delivery assembly (202) when the purge gas is provided to the fuel delivery assembly (202).
Absstract of: EP4611078A1
A current collector includes a flow path connecting a gas supply end portion and a gas discharge end portion, the gas supply end portion being in the metal member for supplying gas to the electrochemical cell, and the gas discharge end portion being in the metal member for discharging the gas from the electrochemical cell. The flow path includes: first flow paths through which the gas flows from the gas supply end portion to the gas discharge end portion in a first direction of a longitudinal direction of each first flow path, the first flow paths being arranged in a second direction perpendicular to a stacking direction and different from the first direction; and a second flow path between the gas supply end portion and the first flow paths, the second flow path being capable of supplying the gas from the gas supply end portion to the first flow paths.
Nº publicación: EP4610403A1 03/09/2025
Applicant:
MITSUBISHI HEAVY IND LTD [JP]
Mitsubishi Heavy Industries, Ltd
Absstract of: EP4610403A1
Provided are a membrane electrode assembly that can suppress unevenness of contact resistance (variation within a surface) and local current concentration and a method for manufacturing a membrane electrode assembly. Solution This membrane electrode assembly comprises: an ion exchange membrane having a first surface and a second surface located on the opposite side of the first surface; a cathode catalyst layer disposed further to the first surface side than the ion exchange membrane; an anode catalyst layer disposed further to the second surface side than the ion exchange membrane; and an ionomer layer provided so as to be separate from the cathode catalyst layer and the anode catalyst layer between the ion exchange membrane and the cathode catalyst layer and between the ion exchange membrane and the anode catalyst layer, the ionomer layer forming a layered structure together with the cathode catalyst layer and the anode catalyst layer.
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