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VALVE DEVICE FOR A FUEL CELL SYSTEM, AND FUEL CELL SYSTEM

Resumen de: WO2025247580A1

The invention relates to a valve device for a fuel cell system and to a fuel cell system having such a valve device. The valve device comprises a valve housing, a first valve seat and a second valve seat which has a larger valve diameter than the first valve seat. The valve device further comprises a valve closing body, which is movably guided in the valve housing along a longitudinal axis, wherein the valve closing body is designed to close the first valve seat in a closed state, and a servo piston unit, which is guided so as to be movable along the longitudinal axis relative to the valve closing body and through the valve closing body. The first valve seat is arranged in the servo piston unit, and the servo piston unit and the valve closing body interact in such a way that the second valve seat is closed by the servo piston unit and the valve closing body in a closed state.

METHOD FOR CONTROLLING THE OPERATION OF AN ELECTROCHEMICAL SYSTEM, ELECTROCHEMICAL SYSTEM AND COMPUTER PROGRAM PRODUCT

Resumen de: WO2025247571A1

The invention relates to a method (10) for controlling the operation of an electrochemical system (12) comprising at least one reactant supply line (14) and at least one non-return valve (16) located in the reactant supply line (14). It is proposed that, in at least one method step and during normal operation of the electrochemical system (12), the non-return valve (16) is actuated in order to obtain and/or test a functional capability of the non-return valve (16).

CELL UNIT WITH IMPROVED CHEMICAL LAYER ARRANGEMENT, STACK OF CELL UNITS AND METHOD FOR MANUFACTURING

Resumen de: WO2025247486A1

The invention provides an electrochemical cell unit (10) with the following general features according to which the cell unit comprises: a support structure (14) carrying cell chemistry layers (18, 20, 22). The cell chemistry layers comprise a fuel electrode layer (18), an oxidant electrode layer (20) and an electrolyte layer (22). The electrolyte layer (22) is located between the fuel electrode layer (18) and oxidant electrode layer (20), and the fuel electrode layer (18) is located between the support structure (14) and the electrolyte layer (22). The support structure (14) comprises a porous region (24) surrounded by a non-porous region (26). At least the electrolyte layer (22) of the cell chemistry layers extends past a perimeter of the porous region (24). An active area of the cell chemistry layers comprises at least the fuel electrode layer (18) and the oxidant electrode layer (20). Typically, the electrolyte layer is present in the active area of the cell chemistry layers and is located between the electrode layers.

Cobalt-Nickel Nanoparticles for Oxygen Reduction Reactions

Resumen de: US2025369077A1

The present disclosure provides a method for synthesizing cobalt-nickel alloy nanoparticles. The method involves dissolving potassium hydroxide in a mixture of ethylene glycol and N, N-dimethylformamide. Cobalt II acetylacetonate and nickel II acetylacetonate are added to the solution. The cobalt II acetylacetonate and nickel II acetylacetonate are stirred into the solution until the cobalt II acetylacetonate and nickel II acetylacetonate have dissolved. The solution is transferred to an autoclave, which in some embodiments is lined with PTFE. The autoclave is heated until the nanoparticles have been synthesized. In some embodiments, the autoclave is heated at 180° C. for 8 hours. The synthesized nanoparticles are collected by centrifuging the product having the synthesized nanoparticles. The nanoparticles are characterized and evaluated for oxygen reduction reaction.

Microbial Battery Membrane Bioreactor

Resumen de: US2025368555A1

A microbial battery membrane bioreactor for wastewater treatment and energy production has a microbial battery 302 coupled with a membrane module 304. Bioanodes 318 coated with exoelectrogen are in a fixed submerged position while solid-state cathodes 320 are movable between a submerged position where they are positioned close to the bioanodes and a raised position above the solution where they are exposed to air for regeneration. In the submerged position. exoelectrogens on bioanodes 318 oxidize organic matter, generating reducing power and creating electron flow to cathodes 320. This flow of electrons from a bioanode into a cathode enables direct electric energy recovery by connecting a load to the electrodes.

INTEGRATED FUEL CELL POWER SPLIT VEHICLE SYSTEMS

Resumen de: US2025368035A1

Systems and methods for operating a fuel cell electric vehicle are disclosed. In one example, a system is provided that comprises a fuel cell; a compressor; and an electric motor operationally coupled via a power split transmission to a driveshaft and the compressor. The power split transmission may be used to split input power from the electric motor into two power flows: one to the driveshaft or other traction device and the other to the compressor. In some examples, the power split transmission may comprise a planetary gearset.

FUEL CELL SYSTEM CONFIGURED TO OPERATE IN COLD CONDITIONS AND METHOD OF OPERATING THE SAME

Resumen de: US2025372675A1

A method of operating a fuel cell system includes providing an anode exhaust from a stack of fuel cells to an anode exhaust cooler, providing an air inlet stream to the anode exhaust cooler, heating the air inlet stream in the anode exhaust cooler using heat extracted from the anode exhaust, providing at least a portion of the air inlet stream from the anode exhaust cooler to the stack, and controlling a ratio of a mass flow rate of the air inlet stream through the anode exhaust cooler to the mass flow rate of the air inlet stream through the stack based on ambient temperature.

FUEL CELL SHIP

Resumen de: US2025372670A1

A fuel cell ship includes a cooling system that cools a fuel cell. The cooling system includes a cooling medium tank that accommodates a cooling medium, a cooling medium circulation pipe that circulates the cooling medium between the fuel cell and the cooling medium tank, a cooling tank internal gas detector installed in the cooling medium tank, a cooling tank internal gas discharge pipe connected to the cooling medium tank, and a cooling tank internal gas discharge valve installed in the cooling tank internal gas discharge pipe. The fuel cell ship includes a control unit that controls opening and closing of the cooling tank internal gas discharge valve. The control unit opens the cooling tank internal gas discharge valve when the cooling tank internal gas detector detects that the concentration of the fuel gas in the cooling medium tank is equal to or greater than a specified value determined in advance.

Elektrochemische Vorrichtung

Resumen de: DE102024115364A1

Um eine elektrochemische Vorrichtung, umfassend einen Stapel aus elektrochemischen Einheiten, die längs einer Stapelrichtung aufeinander folgen, und einen Anodengaskreislauf, in welchem Anodengas aus den elektrochemischen Einheiten zu den elektrochemischen Einheiten rückführbar ist, wobei der Anodengaskreislauf einen Wasserabscheider umfasst, zu schaffen, bei welcher Wasser aus dem Anodengas in dem Anodengaskreislauf effizienter abgeschieden werden kann, wird vorgeschlagen, dass der Wasserabscheider mindestens ein bewegliches Element umfasst.

Elektrodenplatte und Verfahren zur Herstellung

Resumen de: DE102024115534A1

Die Erfindung betrifft eine Elektrodenplatte (10) und ein Verfahren zur Herstellung einer Elektrodenplatte für eine Flussbatterie, Brennstoffzelle oder dergleichen, wobei die Elektrodenplatte durch Anordnung einer porösen Elektrode (15) auf einer Bipolarplatte (11) ausgebildet wird, wobei die Bipolarplatte mit der Elektrode stoffschlüssig verbunden wird.

Polymerelektrolyt-Membran-Brennstoffzelle, Herstellungsverfahren für eine Diffusionsschicht, Diffusionsschicht und Verwendung einer Diffusionsschicht

Resumen de: DE102024115414A1

Eine Polymer Polymerelektrolyt-Membran-Brennstoffzelle (1) umfassend eine Membran-Elektroden-Anordnung mit einer Anode (3), einer Kathode (5) und einer zwischen der Anode (3) und Kathode (5) vorliegenden Polymerelektrolyt-Membran (4), wobei auf der Anode (3) eine wasserhaltende Diffusionsschicht (2) vorgesehen ist und auf der Kathode (5) eine wasserabtransportierende Diffusionsschicht (6a) vorgesehen ist, die derart eingerichtet sind, dass im bestimmungsgemäßen Betrieb der Brennstoffzelle (1) durch die wasserabtransportierende Diffusionsschicht (6a) in der Kathode (5) entstehendes Wasser abtransportiert wird, und durch die wasserhaltende Diffusionsschicht (2) eine Gaszufuhr von Wasserstoff zur Anode (3) stattfindet, wobei der Wasserstoff innerhalb der Anode (3) in Protonen und Elektronen aufgespalten wird und die Protonen durch eine in der Membran-Elektroden-Anordnung enthaltene Ionomer-Matrix in eine Reaktionsrichtung geleitet werden, und die wasserhaltende Diffusionsschicht (2) wasserhaltende Eigenschaften aufweist, derart, dass im bestimmungsgemäßen Betrieb der Brennstoffzelle (1) Wasser zumindest in der Anode (3) gehalten wird, um eine Befeuchtung der Ionomer-Matrix und eine damit verbundene verbesserte Protonenleitung bereitzustellen, sodass die Brennstoffzelle (1), im Vergleich dazu, dass auf der Anode (3) eine Diffusionsschicht vorliegt, die zur wasserabtransportierenden Diffusionsschicht (6a) der Kathode (5) identisch ist, zumindest eine an einer Polarisationskurv

Verfahren zum Betrieb eines Brennstoffzellensystems, Mischvorrichtung und Brennstoffzellensystem

Resumen de: DE102024204937A1

Die Erfindung geht aus von einem Verfahren (10) zum Betrieb eines Brennstoffzellensystems (12), das zum Betrieb mit einem kohlenwasserstoffhaltigen Sollbrennstoff ausgelegt ist.Es wird vorgeschlagen, dass in zumindest einem Verfahrensschritt ein von dem Sollbrennstoff unterschiedlicher kohlenwasserstoffhaltiger Alternativbrennstoff, insbesondere Biogas, dem Brennstoffzellensystem (12) zugeführt wird.

Verfahren zu einer Betriebskontrolle eines elektrochemischen Systems, elektrochemisches System und Computerprogrammprodukt

Resumen de: DE102024204930A1

Die Erfindung geht aus von einem Verfahren (10) zu einer Betriebskontrolle eines elektrochemischen Systems (12) mit zumindest einer Eduktversorgungsleitung (14) und mit zumindest einem in der Eduktversorgungsleitung (14) angeordneten Sperrventil (16).Es wird vorgeschlagen, dass in zumindest einem Verfahrensschritt während eines regulären Betriebs des elektrochemischen Systems (12) das Sperrventil (16) betätigt wird, um eine Funktionstüchtigkeit des Sperrventils (16) zu erhalten und/oder zu prüfen.

COMPOSITE ELECTRODES WITH CARRAGEENAN FOR FUEL CELLS

Resumen de: WO2025250325A1

The present technology relates generally to a fuel cell electrode including about 1 wt.% to about 10 wt.% carrageenan, about 0.5 wt.% to about 50 wt.% metal oxide having a dimension of about 0.1 nm to about 100 nm, and about 1 wt.% to about 20 wt.% of a catalyst comprising CeO2 and a metal catalyst. Fuel cell electrodes using carrageenan instead of NAFION® are more environmentally friendly and biodegradable. The fuel cell electrodes are useful for preparing direct ethanol fuel cells.

METHODS AND SYSTEMS FOR OPTIMIZING OPERATION OF AN ELECTROCHEMICAL SYSTEM

Resumen de: WO2025250286A1

The following disclosure relates to systems and methods for optimizing an operation of an electrochemical system. An optimization system may include a processor configured to determine an adjustment to one or more setpoints for the operation of the electrochemical system based on an optimization model that takes into account a desired performance parameter, an operating load point of the electrochemical system, and/or operating conditions of the electrochemical system received by the processor. In other examples, the optimization system includes a controller configured to: receive desired operating set points for operation of an electrochemical system; receive operating conditions of the electrochemical system; and determine an adjustment to an off-taker control valve, an electrochemical stack pressure control valve, a power supply unit, or a combination thereof based on an optimization model.

APPARATUS FOR CLEANING ELECTROLYTE INJECTOR

Resumen de: WO2025250123A1

An injector cleaning system for use with an electrolyte injection system is disclosed. The cleaning system includes condensing container that contains a cleaning solution. The condensing container is constructed to circulate the cleaning solution through the injection system to remove contaminants. The cleaning system also includes a distillation container that is constructed to collect the contaminated cleaning solution within the injection system. The distillation container boils the contaminated cleaning solution to create a cleaning solution vapor and then transfers the vapor to the condensing container, where the vapor is condensed into a cleaning solution for re- circulation through the injection system.

METAL CATALYST COMPOSITE COMPRISING CARBON SUPPORT PREPARED USING POLYSTYRENE-BASED MATERIAL, AND PREPARATION METHOD THEREFOR

Resumen de: WO2025249931A1

A method for preparing a metal catalyst composite, according to one embodiment of the present invention, comprises: a first step of dispersing a polystyrene-based material in a first solvent, and then hyper-crosslinking same so as to obtain a hyper-crosslinked product; a second step of crushing the hyper-crosslinked product; a third step of carbonizing the crushed hyper-crosslinked product so as to prepare carbonized polystyrene-based particles; and a fourth step of dispersing the carbonized polystyrene-based particles in a second solvent, mixing a precursor of a catalytic metal, and then reducing same so as to prepare a metal catalyst composite.

ELECTRODE WITH CONDUCTIVE INTERLAYER AND METHOD THEREOF

Resumen de: US2025372612A1

In an embodiment, a Li-ion battery electrode comprises a conductive interlayer arranged between a current collector and an electrode active material layer. The conductive interlayer comprises first conductive additives and a first polymer binder, and the electrode active material layer comprises a plurality of active material particles mixed with a second polymer binder (which may be the same as or different from the first polymer binder) and second conductive additives (which may be the same as or different from the first conductive additives). In a further embodiment, the Li-ion battery electrode may be fabricated via application of successive slurry formulations onto the current collector, with the resultant product then being calendared (or densified).

METAL CATALYST COMPOSITE INCLUDING CARBON SUPPORT AND MANUFACTURING METHOD THEREOF

Resumen de: WO2025249928A1

A method for manufacturing a metal catalyst composite according to an embodiment of the present invention comprises: a first step for adding an initiator to a mixture containing a monomer, a first crosslinking agent, and a surfactant to prepare polystyrene-based copolymer particles; a second step for hyper-crosslinking the polystyrene-based copolymer particles to prepare hyper-crosslinked polystyrene-based copolymer particles; a third step for carbonizing the hyper-crosslinked polystyrene-based copolymer particles to prepare carbonized polystyrene-based copolymer particles; and a fourth step for dispersing the carbonized polystyrene-based copolymer particles in a first solvent, adding a catalyst metal precursor, and then reducing same to manufacture a metal catalyst composite.

ELECTROCHEMICAL CELL, ELECTROCHEMICAL CELL DEVICE, MODULE, AND MODULE STORAGE DEVICE

Resumen de: WO2025249510A1

This electrochemical cell has a flow path member and an element part. The flow path member has a first portion having a flat plate shape, a first folded-back portion, and a second folded-back portion. The first portion has a first surface and a second surface that is located on the opposite side of the first surface. The first folded-back portion and the second folded-back portion are respectively folded back from both ends in the first direction along the first surface, and face the second surface. The element part faces the first surface. Each of the first folded-back portion and the folded-back portion has a joint portion inside the contour of the element part when viewed in plan from the element part.

ELECTROCHEMICAL CELL, ELECTROCHEMICAL CELL DEVICE, MODULE, AND MODULE STORAGE DEVICE

Resumen de: WO2025249529A1

This electrochemical cell comprises: a metal member; an element part located on the metal member; and a sealing part containing a seal material. The element part has a first surface facing the metal member, a second surface located opposite the first surface, and a side surface connecting the first surface and the second surface. The sealing part has a first portion located outside the contour of the element part in plan view, and a second portion in contact with the side surface. The element part includes a seal material and has a mixing part in contact with the second portion. The mixing part has a thickness of less than 1 μm.

SOLID OXIDE FUEL CELL SYSTEM FOR MASS ELECTRICITY PRODUCTION

Resumen de: WO2025249790A1

The present invention relates to a solid oxide fuel cell system that, unlike conventional methods in which anode off-gas and cathode off-gas are independently used for each individual stack of a solid oxide fuel cell, reduces the total amount of fuel required by the system and decreases the amount of external water used by recycling, in a rear-end stack, anode off-gas from a front-end stack, and reduces the amount of external air required by the system and decreases the electricity consumption of a blower by recycling, in the rear-end stack, cathode off-gas from the front-end stack.

VANADIUM ELECTROLYTE, AND SECONDARY BATTERY COMPRISING SAME

Resumen de: WO2025249779A1

The present invention relates to a vanadium electrolyte and to a secondary battery comprising same and, more particularly, to a vanadium electrolyte having a controlled concentration of an element causing a hydrogen evolution reaction (HER) occurring during charging and discharging of a secondary battery, and to a secondary battery comprising the vanadium electrolyte.

ELECTROCHEMICAL CELL, SOLID OXIDE ELECTROLYSIS CELL, CELL STACK, HOT MODULE, AND HYDROGEN PRODUCTION DEVICE

Resumen de: WO2025249472A1

An electrolysis cell 21 comprises a solid electrolyte layer 211, a fuel electrode layer 213 stacked and arranged on one surface side of the solid electrolyte layer 211, and an air electrode layer 212 stacked and arranged on the other surface side of the solid electrolyte layer 211. The fuel electrode layer 213 includes a functional layer 213a, a support layer 213b positioned on the side farther from the solid electrolyte layer 211 than from the functional layer 213a, and a mutual diffusion layer 213c positioned between the functional layer 213a and the support layer 213b so as to be in contact with both of the functional layer 213a and the support layer 213b. The mutual diffusion layer 213c includes: a first element which is one element constituting the functional layer 213a; and a second element which is one element constituting the support layer 213b and is different from the first element. The thickness of the mutual diffusion layer 213c is 1.1 μm or more and 9.7 μm or less.

ELECTROCHEMICAL CELL, SOLID OXIDE ELECTROLYSIS CELL, CELL STACK, HOT MODULE, AND HYDROGEN PRODUCTION DEVICE

Nº publicación: WO2025249470A1 04/12/2025

Solicitante:

NITERRA CO LTD [JP]
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Resumen de: WO2025249470A1

An electrolysis cell 21 includes: a solid electrolyte layer 211; a fuel electrode layer 213 stacked and arranged on the rear surface 211A side of the solid electrolyte layer 211; and an air electrode layer 212 stacked and arranged on the front surface 211B side of the solid electrolyte layer 211. A mutual diffusion layer 214 in contact with both the solid electrolyte layer 211 and the fuel electrode layer 213 is formed between the solid electrolyte layer 211 and the fuel electrode layer 213. The mutual diffusion layer 214 includes: a first element which is one element constituting the solid electrolyte layer 211; and a second element which is one element constituting the fuel electrode layer 213 and is different from the first element. The thickness T1 of the mutual diffusion layer 214 falls within the range of 1.5 μm or more and 4.8 μm or less.