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PASSIVE INTERTANK VOLUME AND CHARGE REBALANCING SYSTEM FOR REDOX FLOW BATTERY

Resumen de: EP4832124A1

The invention provides a rebalancing system for a redox flow battery, comprising a positive tank for containing positive electrolyte; a negative tank for containing negative electrolyte; and a rebalancing intertank reactor having an electrolyte zone and a hydrogen zone; wherein the electrolyte zone and the hydrogen zone are separated from each other by an ion conductive membrane or separator to provide a reduction reaction of positive electrolyte in the electrolyte zone and an oxidation reaction of hydrogen gas in the hydrogen zone; wherein the electrolyte zone is directly connected between the positive tank and the negative tank and the hydrogen zone is directly connected to a headspace of the negative tank configured to contain hydrogen gas; and wherein the geometric arrangement of the positive tank, the rebalancing intertank reactor and the negative tank is configured to allow positive electrolyte to flow from the positive tank through the electrolyte zone to the negative tank due to a hydraulic head difference between the positive electrolyte and the negative electrolyte..

SEAL ASSEMBLY, METHOD FOR PRODUCING SAME, AND COMPONENT OF AN ELECTROCHEMICAL CELL

Resumen de: WO2025131151A1

The invention relates to a method for producing a seal assembly (1), comprising the following steps: - providing a 3D-printed support structure (2) comprising at least one annular groove (3, 3') having a groove base (4) and bevelled groove edges (5a, 5b); - providing at least one thermoplastic sealing material (6); - heating and liquefying the at least one thermoplastic sealing material (6); - depositing at least one first sealing bead (7a) of the at least one liquefied sealing material (6) onto the groove base (4) of the annular groove (3, 3') by means of at least one first nozzle unit (20), which has a first nozzle opening (20a) with a first diameter (D1) which is smaller than a width (B) of the groove base (4) of the annular groove (3, 3'). The invention also relates to a seal assembly (1), a component (11) and an electrochemical cell (100).

ANIONIC CONDUCTOR

Resumen de: WO2025132734A1

The invention relates to an anion-conducting composite material, which comprises (a) a porous support material; and (b) a composition disposed on the porous support material, wherein the composition comprises: (i) a cationic polymer, and (ii) a reacted crosslinker, wherein the reacted crosslinker is obtainable by generating carbene or nitrene reactive intermediate groups from reactive intermediate precursor groups of a crosslinker compound, so that the carbene or nitrene reactive intermediate groups react with the porous support material and the cationic polymer, wherein the crosslinker compound comprises n of said reactive intermediate precursor groups, wherein n is an integer equal to or greater than 3, wherein the reactive intermediate precursor groups are selected from carbene precursor groups and nitrene precursor groups, wherein the carbene precursor groups are selected from hydrazone groups of formula (A), diazo groups of formula (B) and diazirine groups of formula (C), and the nitrene precursor groups are azide groups of formula (D): (A), (B), (C), (D), wherein R1 is H or –S(O)2R2, and R2 is an unsubstituted or substituted C1-6 alkyl group or an unsubstituted or substituted aryl group. The invention also provides a process for producing an anion- conducting composite material. Also provided is the use of an anion-conducting composite material which is an anion-conducting membrane, as an anion exchange membrane. The invention also provides a polymer, and a process fo

SOEC OR SOFC MODULE COMPRISING A THERMAL ENCLOSURE WITH ONE OR MORE THERMAL MANAGEMENT HATCHES AND HOUSING ELECTROCHEMICAL CELLS

Resumen de: WO2025133102A1

The invention relates to a module (1) intended to operate at high temperature, with a thermal enclosure in which sub-modules (SM1, SM2) that each comprise a stack of electrochemical cells are housed. At least one hatch (110) for removing heat generated inside the enclosure by the sub-modules in operation makes it possible to manage temperature in a module.

ION-CONDUCTING MEMBRANE AND METHOD FOR PREPARING SAME BY ELECTROSPINNING A POLYETHERSULFONE

Resumen de: WO2025131972A1

The invention relates to a method for preparing a membrane which comprises the following steps, in succession: preparing a layer of polyethersulfone nanofibres by electrospinning a polyethersulfone solution; heating the nanofibres to soften them; cooling the nanofibres; and impregnating the nanofibres with an ionomer to form the membrane. A membrane of this kind consists of polyethersulfone nanofibres that have points at which they join to the nanofibres adjacent to them. The membrane has ionic conductivity properties and can be used in a fuel cell or an electrolyser.

A FUEL CELL SYSTEM AND A METHOD OF ITS OPERATION, A VEHICLE AND A METHOD FOR PROPELLING THE VEHICLE WITH THE FUEL CELL SYSTEM

Resumen de: WO2025131203A1

A fuel cell system and a method of its operation, a vehicle and a method for propelling the vehicle with the fuel cell system. In a fuel cell system (1), an evaporator (41), a superheater (42) and a reformer (26) are provided inside a pressurised container (20) to provide a compact fuel processing unit 5 (17).

PARTICULATE COMPOSITE IRIDIUM OXIDE MATERIALS AND PREPARATION METHOD AND APPLICATION THEREOF

Resumen de: NL2036587B1

The present application discloses a method for producing an iridium oxide film on a particulate substrate having an electrical conductivity of >0.01 S/cm (as detected by powder measurements) by chemical vapour deposition at a pressure in the range of from to 1010 KPa, comprising: (i) providing the particulate substrate in a reaction chamber; (ii) contacting the particulate substrate with a vaporized iridium oxide precursor gas, thereby forming a homogenously distributed film of iridium precursor material on the substrate; (iii) contacting the material comprising the homogenously distributed layer with a vaporized oxidant to allow the oxidant to react with the homogenously distributed iridium precursor film on the substrate; and (iv) optionally, repeating until steps (ii) to (v); to obtain a particulate material comprising a surface film of a desired thickness comprising homogeneously distributed discrete iridium oxide clusters with an average diameter in the range of from 0.5 to 5 nm.

METHOD FOR MANUFACTURING A METAL SUBSTRATE, METHOD FOR PRODUCING AN ELECTROCHEMICAL CELL, AND METAL SUBSTRATE AND ELECTROCHEMICAL CELL

Resumen de: WO2025133091A1

The present invention relates to a method for manufacturing a metal substrate (10), in particular for an electrochemical cell, wherein a plurality of holes are provided in the metal substrate (10) by means of laser drilling. According to the invention, the metal substrate (10) is preloaded at least for a laser drilling step. The invention also relates to a method for producing an electrochemical cell, in particular a fuel cell or an electrolytic cell. According to the invention, in at least one production step, a metal substrate (10) is manufactured by means of the previously mentioned method. The present invention also relates to a metal substrate (10) which is manufactured in at least one production step by means of the previously mentioned method. The invention additionally relates to an electrochemical cell, in particular fuel cell or electrolytic cell, comprising a metal substrate which is manufactured in at least one production step by means of the previously mentioned method.

LOW CARBON ENERGY SYSTEM

Resumen de: WO2025133594A1

An energy system (100) for supplying electricity to a load (108) and a method of using said system are provided, the system comprising renewable electricity generation capacity (102) comprising solar and wind generation capacity, a battery (110) with a maximum electricity storage capacity sufficient to meet the mean load for up to 1 hr, an electrolyser (112) configured for hydrogen gas production and capable of operating at from 0.3 to 0.8 times the maximum output of the renewable electricity generation capacity; and gas storage (114) configured to receive the hydrogen gas; wherein the renewable electricity generation capacity is in electrical communication with the electrolyser via the battery and wherein the system is configured to allow electrical communication to the load such that electrical output not consumed by the load is used to generate hydrogen gas.

A PROCESS FOR MANUFACTURING A FUNCTIONAL ELECTROCHEMICAL DEVICE BASED ON A FREESTANDING MEMBRANE

Resumen de: EP4576286A1

The present invention relates to a process for manufacturing a functional electrochemical device based on a freestanding membrane. The present invention also relates to the use of the potassium hydroxide stopper layer of a material selected from ZrO₂, HfOz and CeOz as ultrathin electrolyte or intermediate layer positioned within the electrolyte in thin-film solid oxide cells or oxygen ion batteries.

AN ELECTRODE SHEET FOR TRANSPORT OF LIQUIDS AND GASES

Resumen de: EP4575035A1

In an aspect, an electrode sheet designed for liquid and gas transport rendered suitable for metallization (5) is provided. The electrode sheet designed for liquid and gas transport (5) comprising a polymer base layer (1) comprising a first and a second face side, rendered suitable for metallization to act as a current collector. The first and/or said second face side of the polymer base layer (1) comprises a structured surface with a pattern of channels (3). The polymer base layer (1) further comprises a plurality of through holes (2) through said base layer (1) to connect the pattern of channels (3) to an opposing face side of the polymer base layer (1).

GAS DIFFUSION ELECTRODE AND METHOD FOR REDUCING HYDROGEN DEVELOPMENT DURING ELECTROLYSIS OPERATION WITH GAS DIFFUSION ELECTRODE

Resumen de: WO2025132117A1

A gas diffusion electrode is suitable for improving the mechanical stability of a gas diffusion electrode and reducing the amount of hydrogen generated at the gas diffusion electrode during an electrolysis process, said gas diffusion electrode containing at least one electrocatalyst and at least one gas diffusion layer (21) arranged on more than 75% of the surface of an open-pore, planar carrier produced from at least one material and being characterised in that based on the total weight of said carrier, the total proportion of electrically conductive material of said carrier is in the range from 50 to 100 wt.% and said carrier has, at least along one of its boundary regions, a partial area (22) which is not covered by the gas diffusion layer, wherein on said partial area (22) at least on the surface of said carrier, a material is present which (a) conducts electric current and at 50°C has at least the same overvoltage for the development of hydrogen as the at least one electrocatalyst, or (b) is an insulator.

WATER ELECTROLYSIS STACK ASSEMBLY AND HOT BOX APPARATUS

Resumen de: EP4831349A1

0001 The present invention provides a water electrolysis stack assembly and a hot box apparatus. In an embodiment, provided is a water electrolysis stack assembly including: a case including an upper surface part, a side surface part, and a gas outflow pipe formed in the side surface part; and a stack accommodated in an inner space of the case, wherein a surface pressure is applied to the stack by the upper surface part of the case.

FUEL CELL SYSTEM AND SHUT-DOWN METHOD

Resumen de: WO2025131172A1

The invention relates to a fuel cell system (1) comprising a fuel cell stack (2) and a plurality of valves (6, 7, 8, 9) provided for the passage of operating media and reaction products of the fuel cell stack (2), at least one of these valves (6, 7, 8, 9) being in the form of a normally closed valve both on the anode side and on the cathode side.

METHOD FOR OPERATING A REDOX FLOW BATTERY

Resumen de: WO2025172426A1

In order to efficiently operate a redox flow battery, the positive electrolyte pump (9a) and/or the negative electrolyte pump (9b) is operated in a pulsed manner during a pulsed operating time (tP), as a result of which the flow rate (M+) of the positive electrolyte (15a) and/or the flow rate (M-) of the negative electrolyte (15b) is varied between a specified maximum flow rate (Mmax) and a specified minimum flow rate (Mmin) during a pulse cycle (PZ), and a plurality of pulse cycles (PZ) follow one another in the pulsed operating time (tP) during the operation of the redox flow battery (1).

METAL FIBER

Resumen de: EP4624071A1

The present invention relates to a metal fiber having an anisotropic surface texture, comprising: a first end region on a first end of the metal fiber having a smooth surface; and a second end region on a second end of the metal fiber having a non-smooth surface.

MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL AND FUEL CELL COMPRISING SAME

Resumen de: EP4832123A1

The present invention relates to a membrane-electrode assembly for a fuel cell and a fuel cell comprising same and, more specifically, to a membrane-electrode assembly for a fuel cell and a fuel cell comprising same, wherein by forming a separate radical protective layer comprising fucoidan and a radical scavenger other than fucoidan between a polymer electrolyte membrane and an electrode layer, deterioration of the electrolyte membrane due to radicals can be prevented, thereby greatly improving chemical resistance.

CATALYST LAYER FOR FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL COMPRISING SAME

Resumen de: EP4832120A1

Disclosed is a catalyst layer for a fuel cell having improved water repellency, thermal conductivity, and output. The catalyst layer according to one aspect comprises a catalyst and a functional surface layer disposed on at least one surface thereof, the functional surface layer comprising functional nanoparticles comprising any one or more selected from the group consisting of a first fluorinated carbon nanoparticles, boron nitride nanoparticles, fluorinated boron nitride nanoparticles, and a composite containing second fluorinated carbon nanoparticles and IrO_x nanoparticles (x is 1, 2, or 3).

FUEL CELL WITH BIPOLAR PLATE PROVIDED WITH A GRID AND ASSOCIATED MANUFACTURING PROCESS

Resumen de: WO2025133364A1

Disclosed is a braking system (10) for a motor vehicle, comprising a power supply line (110a, 110b) configured to connect a power supply battery (14a, 14b) to an inverter (184a, 184b) of an electric braking motor (182), the braking system (10) comprising at least one DC-DC voltage boost converter (30a, 30b) disposed on the power supply line (110a, 110b) between the battery (14a, 14b) and the inverter (184a, 184b).

UNIFORM CURRENT DENSITY FUEL CELLS

Resumen de: GB2636801A

A bipolar plate for a fuel cell assembly has a bipolar frame configured with two reverse image faces of different function comprising; anode flow channels formed of a first portion AFC fluidly connected to second portion AFC’ regardless of gap G. The anode flow channels are fluidly connected to first anode flow passage 330 and second anode flow passage 335. The gap in each anode flow channel is positioned at least 85% downstream from one of the first and second anode flow passages. A cathode field (14, Figure 5C) has inlet cathode flow channels (iCFC, Figure 5C) open and fluidly connected to first cathode fluid passage (340, Figure 5C) but blocked from second cathode fluid passage (345, Figure 5C) via humps (H, Figure 5C); and outlet cathode flow channels (oCFC, Figure 5C) blocked by humps from the first cathode flow passage but open and fluidly connected to the second cathode flow passage. A first end of the bipolar frame includes at least one air inlet, at least one water inlet, and at least one hydrogen outlet; whilst a second end includes: at least one cathode fluid outlet, and at least one hydrogen inlet.

MEMBRANE/CATALYST LAYER STRUCTURE, MEMBRANE/ELECTRODE ASSEMBLY, FUEL CELL, WATER ELECTROLYSIS CELL, AND WATER ELECTROLYSIS DEVICE

Resumen de: EP4831348A1

0001 Provided is a membrane/catalyst layer structure that can maintain a good power generation performance or good electrolysis performance on a long-term basis. The membrane/catalyst layer structure has a first catalyst layer disposed opposite a second catalyst layer, and a diaphragm containing at least a polymer electrolyte membrane is sandwiched therebetween. The first catalyst layer and the second catalyst layer contain, as a first metal, the element platinum and/or the element iridium. The first catalyst layer and/or the second catalyst layer further contains, as a second metal, at least one element selected from the group consisting of gold, silver, copper, nickel, palladium, cobalt, rhodium, iron, ruthenium, and osmium. The diaphragm contains a compound N having a nitrogen-containing heterocycle.

WATER SEPARATOR WITHIN A FUEL CELL STACK

Resumen de: GB2636803A

A fuel cell system includes means to separate water from the cathode exhaust stream that is integrated into a fuel cell stack for reducing its overall size. Fuel cell assemblies are compressed together to form a fuel cell stack 100, each fuel cell assembly comprising one or more frames supporting an MEA, a hydrogen outlet for collecting excess hydrogen from the anode side of the MEA, and a cathode exhaust outlet for collecting air and water from the cathode side of the MEA (figure 3). By aligning the cathode exhaust outlets of the fuel cell assemblies, a collection cavity 300 fluidly connected to each fuel cell assembly is formed in the fuel cell stack. A water outlet (170, figure 5A) is in fluid communication with the collection cavity, and a water collection ramp 252 fits within the collection cavity. Preferably, one or more water inlets are formed in each frame for supplying water to the cathode side of the MEA to provide cooling. The water collection ramp preferably comprises gutters (405, figures 6A-B) extending from at least one side thereof and may include a spine (410, figure 6B) and sawteeth (430, figure 6B) on opposing edges to encourage water flow.

INTERNAL WATER SEPARATOR IN A FUEL CELL STACK

Resumen de: GB2636804A

A fuel cell system includes means to separate water from the cathode exhaust stream that is integrated into a fuel cell stack for reducing its overall size. Fuel cell assemblies are compressed together to form a fuel cell stack 100, each fuel cell assembly comprising a frame supporting an MEA, a hydrogen outlet for collecting excess hydrogen from the anode side of the MEA, and a cathode exhaust outlet for collecting air and water from the cathode side of the MEA (figure 3). By aligning the cathode exhaust outlets of the fuel cell assemblies, a collection cavity 300 fluidly connected to each fuel cell assembly is formed in the fuel cell stack. A water outlet 170 is in fluid communication with the collection cavity, and a water collection means 250 fits within the collection cavity. Preferably, one or more water inlets are formed in each frame for supplying water to the cathode side of the MEA to provide cooling. The water collection means preferably comprises a body portion (252, figures 7A-B) fitting within the collection cavity. A fan (410, figure 7B) or stator (400, figure 7A) may be provided in a head portion positioned within or outside the collection cavity.

BLOCKING OF FLUID DISTRIBUTION IN PEM FUEL CELLS

Resumen de: GB2636806A

An end fuel cell assembly 10N has an anode face with a first end (18, Figure 3) having an anode outlet (315, Figure 3) fluidly connected to an anode inlet (325, Figure 3) across an anode face flow field (16, Figure 3). The end fuel cell assembly further includes an end plate 602 facing the anode flow field and a barrier limiting fluid flow to the anode flow field wherein the barrier reduces the volume of fluid in the anode flow field. The barrier may be an inlet barrier (326’, Figures 3 and 11) or an outlet barrier (316’, Figure 10). A further end fuel cell assembly 10A has a cathode face with a first end (18, Figures 5 and 8) having a cathode inlet (300, Figure 5) fluidly connected to a cathode outlet (320, Figure 5) across a cathode face flow field 14. The end fuel cell assembly further includes an end plate 604 facing the cathode flow field and an inlet stop (802, Figure 8) at the cathode inlet configured to limit fluid flow into a first cathode passage (340, Figures 5 and 8) wherein the inlet stop reduces the volume of fluid entering the cathode flow field.

COOLANT FLUID DISTRIBUTION IN PEM FUEL CELLS

Nº publicación: EP4830051A1 28/10/2026

Solicitante:

INTELLIGENT ENERGY [GB]
Intelligent Energy

Resumen de: GB2636799A

Cooling a fuel cell utilises a water distribution cover 30 including a plurality of rivulets (800A-N, Fig 8A) which are fluidly connected to a plurality of fluid guides (700, Fig 7A-B) for passing cooling water to a cathode flow field 14. The fluid guides are fixed to a cathode cover 22 which in turn is affixed to a bipolar plate 13. The water distribution cover 30 includes a fluid conduit (802, Fig 8A) in fluid communication with the rivulets, each of which has a head (807, Fig 8B) and tail end (810, Fig 8A), and the rivulets are configured to align the tail ends with a respective fluid guide provided on the cover plate. The rivulets can form cathode inlets which have variable water pathways (e.g. width, depth, amplitude if sinusoidal) which are configured to deliver even quantities of water across the cathode flow field in each fuel cell forming a fuel cell stack.