2208results about "Solid electrolyte fuel cells" patented technology

The present invention relates to an aircraft propulsion system (100) comprising: a fuel cell arrangement comprising at least one fuel cell (110); an air source (130) for providing air to the fuel cell arrangement; a compressor arrangement comprising a first compressor (120) in fluid communication with the air source and a fuel cell of the fuel cell arrangement; and, a turbine arrangement comprising a first turbine (124) mechanically coupled to the first compressor, wherein the first turbine is in fluid communication with the at least one fuel cell (110), the system being arranged so that, in use, air from the air source (130) flows in turn to the first compressor (120), the fuel cell arrangement and the first turbine (124).

To provide an ion conductive polymer having improved ion conductivity, and a separation membrane containing the same.SOLUTION: The present disclosure relates to an ion-conducting polymer having a repeat unit comprising a quaternary ammonium and at least one ether group.SELECTED DRAWING: None

A control unit of a fuel cell system opens a second valve at the time of closing a first valve, and maintains the same operating state of a compressor before closing the first valve and after opening the second valve.

A method of mesoporous carbon support production includes providing an active silica template from a self-assembling block copolymer (BCP) in a solution, the BCP including a diblock copolymer of polydimethylsiloxane (PDMS) as a majority block and a hydrocarbon polymer as a minority block in a predetermined volume fraction, the BCP being in a form of nanodroplets, drying and annealing the nanodroplets, ashing away the hydrocarbon polymer of the minority block to obtain the active silica template, applying a carbon precursor onto the active silica template, and removing the active silica template to obtain a mesoporous carbon support as a reverse image of the template.

A bipolar plate-gas diffusion layer (GDL) assembly for a polymer-electrolyte-membrane fuel cell includes a flat metallic bipolar plate and a porous metal GDL adjacent to and in direct contact with the flat metallic bipolar plate. The porous metal GDL includes flow channels defined by flow channel walls with flow channel surfaces. The flow channel walls and flow channel surfaces have an average porosity generally equal to an average porosity of an interior of the porous metal GDL.

This biaxially oriented polyarylene sulfide film contains a polyarylene sulfide resin as a main constituent component. The biaxially oriented polyarylene sulfide film has a thickness variation in the film width direction of 0.5% to 10.0% inclusive in a width of 300 mm around the central part in the width direction of the film, an orientation angle from the film longitudinal direction of more than -35° but less than 35°, not less than -90° but less than -55°, or more than 55° but not more than 90°, and a difference between the maximum value and the minimum value of the orientation angle of 0.5° to 20.0° inclusive. The present invention provides a biaxially oriented polyarylene sulfide film which is capable of suppressing warpage at the time of processing, and is excellent in terms of pressure uniformity when a large number of the biaxially oriented polyarylene sulfide films are stacked and pressurized.

To provide a power supply device which can be mounted on a lunar rover, and can supply power necessary and sufficient for traveling operation of the lunar rover and power necessary in an emergency.SOLUTION: A high-temperature waste heat type power supply device 33 using a fuel cell 1, which is mounted on a lunar rover 34 that travels on the lunar surface, includes a fuel cell device 23 that mounts the fuel cell 1, an exhaust heat device 24 that exhausts heat generated by the fuel cell 1 to a surrounding environment, and an emergency cooling device 25 that stores water generated by the fuel cell 1 and absorbs the heat generated by the fuel cell 1. When the amount of heat generated by the fuel cell 1 exceeds the amount of heat that can be removed by the heat removal device 24, the water stored in the emergency cooling device 25 absorbs the amount of heat generated by the fuel cell 1.SELECTED DRAWING: Figure 1

To provide a fuel cell that can be constructed thinly while ensuring sufficient thickness of the gas diffusion layer. [Solution] A fuel cell cell that generates electricity by the reaction of a reaction gas comprises a membrane electrode assembly having an electrolyte membrane and a catalyst layer, a gas diffusion layer laminated on the membrane electrode assembly and made of a porous metal, and a separator laminated on the gas diffusion layer and parallel to the plane direction of the membrane electrode assembly, wherein the gas diffusion layer has grooves through which the reaction gas flows on the separator side.

This hot-melt adhesive sheet is provided with a base material and an adhesive layer laminated on at least one surface of the base material, the adhesive layer being formed from a hot-melt adhesive, the hot-melt adhesive comprising a crosslinked product of an adhesive composition containing a crosslinking agent, the adhesive composition comprising a polyester resin, an epoxy resin, and an isocyanate crosslinking agent, the epoxy resin contains a bisphenol-type epoxy resin and a rubber-modified epoxy resin, and the bisphenol-type epoxy resin has an epoxy equivalent weight of 450 g / eq or more and 1000 g / eq or less.

To provide a fuel cell cell having a separator that can improve drainage performance. [Solution] The fuel cell cell comprises a membrane electrode assembly, a pair of gas diffusion layers provided so as to sandwich the membrane electrode assembly, and a pair of separators provided so as to sandwich the pair of gas diffusion layers. At least one of the pair of separators has a flow channel portion through which the reaction gas flows on the surface facing the gas diffusion layer, and a rib portion provided adjacent to the flow channel portion and in contact with the gas diffusion layer. The flow channel portion has a bottom surface away from the gas diffusion layer and a side portion connecting the bottom surface and the rib portion, and the side portion is provided with a groove extending from the connection portion with the rib portion toward the bottom surface.

The invention relates to the field of fuel cell catalysts, and discloses a method for improving a membrane electrode catalyst layer of a proton exchange membrane fuel cell by using a sulfonic acid group modified carbon material, which comprises the following steps: adding a carbon material into an acid solution, carrying out reflux reaction, washing and drying to obtain a carbon material with an oxygen-containing functional group; adding the carbon material containing the oxygen functional group into an organic solvent for dispersion, adding an organic matter containing a sulfonic acid group after reaction, and performing condensation reaction to obtain a sulfonic acid group modified carbon material; and adding the sulfonic acid group modified carbon material into the proton exchange membrane fuel cell slurry to prepare the sulfonic acid group modified material improved proton exchange membrane fuel cell membrane electrode. A sulfonic acid group and water molecules form a hydrogen bond under a low-humidity working condition, so that the water retention capacity of the catalyst layer is improved, and the proton conduction capacity is improved; under the high-humidity condition, due to the ionization charge repulsion effect of sulfonic acid groups and ionomers, the adsorption of the ionomers on the surface of the carbon material is reduced, the porosity of the catalyst layer is improved, the discharge of redundant water is facilitated, and the gas transmission rate is increased.

A solid oxide fuel cell is disclosed. The solid oxide fuel cell includes: an anode support electrode; a solid oxide electrolyte disposed on the anode support electrode; and a cathode electrode disposed on the solid oxide electrolyte. The anode support electrode includes: a first support layer having a porous structure and including a cermet of nickel and first yttria-stabilized zirconia containing yttria in a proportion of 1 mol% to 5 mol%; a second support layer which has a porous structure, is provided on the first support layer, and is formed from metal ceramic of nickel, second yttria-stabilized zirconia having a higher yttria content than the first yttria-stabilized zirconia, and alumina; and an anode functional layer which is provided on the second support layer so as to be in contact with the solid oxide electrolyte, and which is formed from a cermet of yttria-stabilized zirconia and nickel.

To appropriately generate low-efficiency electricity while meeting dilution requirements. [Solution] The fuel cell system 10 includes a fuel cell stack 12 that generates electricity, a cathode supply passage 62 that supplies cathode gas to the fuel cell stack 12, a cathode discharge passage 64 that discharges cathode off gas discharged from the fuel cell stack 12, a first valve 74 provided in the cathode supply passage 62, a second valve 76 provided in the cathode discharge passage 64, a cathode bypass passage 66 that bypasses the fuel cell stack 12 and connects the cathode supply passage 62 and the cathode discharge passage 64, a third valve 78 provided in the cathode bypass passage 66, and a control unit 911 that opens the first valve 74 and the third valve 78 during the first power generation when the fuel cell stack 12 generates electricity during warm-up, and controls the opening degree of the second valve 76 to be more closed than the opening degree during the second power generation when the fuel cell stack 12 generates electricity after warm-up is complete.

The invention relates to the technical field of fuel cells, and provides a solid oxide fuel cell and a preparation method thereof, and the preparation method comprises the following steps: providing a half-cell precursor comprising an electrolyte layer and a NiO-based ceramic layer; placing the half-cell precursor in an acid solution for reaction treatment, selectively etching to remove at least part of NiO phase in the NiO-based ceramic layer, and cleaning to form a porous ceramic layer; injecting nickel slurry into pores of the porous ceramic layer, and performing drying and first calcination treatment to form a porous Ni-based metal ceramic composite anode layer; and preparing a porous cathode layer on the surface of the other side of the electrolyte layer to form the solid oxide fuel cell. According to the method, the NiO phase of the NiO-based ceramic layer is removed by using the pickling solution, and the nickel slurry is injected to construct the porous Ni-based metal ceramic composite anode, so that the problems that the pore structure is random and difficult to control when the porous anode is prepared by pore-forming of a traditional pore-forming agent and reduction of NiO by introducing hydrogen, and the active area of the anode is reduced due to migration, agglomeration and coarsening of Ni particles are solved.

A system may include a cooling device configured to receive exhaust gases, generated by a solid oxide fuel cell, including water vapor, carbon dioxide, nitrogen, hydrogen, and carbon monoxide. The cooling device may be further configured to cool the exhaust gases producing cooled exhaust gases. The system may further include a compression device configured to compress the cooled exhaust gases to produce compressed exhaust gases. The system may further include a carbon capture device configured to capture at least a portion of the carbon dioxide from the compressed exhaust gases to produce treated exhaust gases. The hydrogen and the carbon monoxide may be majority components of the treated exhaust gases.

The present invention relates to a highly dispersible organic-inorganic hybrid nanoparticle radical scavenger having excellent low elution characteristics and reversible regenerability and to an electrode composition comprising same, the highly dispersible organic-inorganic hybrid nanoparticle radical scavenger comprising nanoparticles in which an oxide of cerium (Ce) and silicon (Si) and an oxide of at least one metal (M) selected from transition metals and lanthanides are combined, wherein the nanoparticles have at least one functional group selected from an alkylsulfonic acid group and a fluoroalkylsulfonic acid group.

An interconnect for electrically connecting cells of an electrochemical cell stack is disclosed. The interconnector comprises a first side and a second side; the first side is adapted to face a cell layer comprising an electrochemically active cell region, and a portion of the first side is provided with an electrically insulating layer.

A fuel electrode and systems containing the electrode are disclosed. A fuel electrode for use in a solid oxide electrochemical apparatus includes an electron conductor and an oxygen ion conductor. The electron conductor includes Nickel (Ni), Copper (Cu), and Magnesium oxide (MgO). The oxygen ion conductor includes doped Ceria. The fuel electrode includes a cermet current collector that also includes Nickel (Ni), Copper (Cu), Magnesium oxide (MgO), and doped ceria. The current collector also includes metal that is less prone to oxidization, such as certain precious metals. A solid oxide electrochemical cell includes the fuel electrode, an oxygen electrode, and a power supply in operable communication with both electrodes. A method of operating the solid oxide electrochemical cell as either a solid oxide electrolysis cell or a solid oxide fuel cell includes reducing the fuel electrode, if it becomes oxidized, without having to dismantle or replace the fuel electrode.

To provide a fuel cell system that achieves a high carbon dioxide recovery rate.SOLUTION: A fuel cell system 100 comprises a fuel cell 1 and a carbon dioxide recovery unit 2. The fuel cell comprises: a stack 11 including an air electrode 13 and a fuel electrode 14; a mixer 17; a reformer 12; a combustor 18; a reformed gas supply path L2; an air electrode exhaust gas path L3; a fuel electrode exhaust gas path L4; and a hydrogen collection path L8 for sending hydrogen-rich gas sent from the carbon dioxide recovery unit to the combustor. The fuel electrode exhaust gas path is branched into a fuel electrode exhaust gas recycling path L6 for sending fuel electrode exhaust gas to the mixer and a carbon dioxide recovery path L7 for sending fuel electrode exhaust gas to the carbon dioxide recovery unit. The carbon dioxide recovery unit comprises: a compressor 22 for compressing the fuel electrode exhaust gas; a storage tank 23 for storing the fuel electrode exhaust gas; and a carbon dioxide separation unit 24 for separating the fuel electrode exhaust gas to carbon dioxide and the hydrogen-rich gas.SELECTED DRAWING: Figure 1

A powerplant for an aircraft includes a first turbine engine, a second turbine engine and a fuel cell system. The second turbine engine includes a second engine flowpath, a second engine compressor section, a second engine combustor section and a second engine turbine section. The second engine flowpath extends from a second engine flowpath inlet to a second engine flowpath outlet. The second engine flowpath inlet and the second engine flowpath outlet are each fluidly coupled with a flowpath of the first turbine engine. The fuel cell system includes a fuel cell, a fuel circuit and an air circuit. The fuel circuit extends through the fuel cell and is fluidly coupled with and upstream of a first fuel injector in the second engine combustor section. The air circuit extends through the fuel cell and is fluidly coupled with and downstream of a bleed from the second engine flowpath.

To provide a fuel cell system that can determine whether a first valve serving as an exhaust valve and a second valve serving as an exhaust drain valve are abnormally opened or closed.SOLUTION: A control device of a fuel cell system determines an opening / closing abnormality of a first valve 143 or a second valve 146 on the basis of a comparison between a first pressure drop rate, which is the rate of drop in a pressure detection value of a pressure sensor 145 when first control is executed to open the second valve 146 with the first valve 143 closed, and a second pressure drop rate, which is the rate of drop in the pressure detection value of the pressure sensor 145 when second control is executed to open the first valve 143 with the second valve 146 closed.SELECTED DRAWING: Figure 1

The present disclosure provides a fuel cell comprising at least one fuel cell plate. Each fuel cell plate includes at least one first insulating layer, at least one ion permeable membrane, and a plurality of anodes and a plurality of cathodes. All cathodes are disposed across a first surface of the ion permeable membrane and all anodes are disposed across a second surface of the ion permeable membrane opposite the first surface. At least one material property of the anode or the cathode or a size of the anode or a size of the cathode varies or varies across the fuel cell plate, and / or at least one material property of another component of the fuel cell plate varies or varies across the fuel cell plate. A pair of anodes and cathodes across at least one ion permeable membrane may be electrically connected in parallel with an adjacent pair of anodes and cathodes.

The invention discloses a submicron ultrathin self-supporting ion conduction membrane as well as a preparation method and application thereof. The polymer is obtained through reaction of organic polymer resin and a cross-linking agent, has a full-cross-linked structure, and does not have interface impedance between a separation layer and a supporting layer; the organic polymer resin is selected from a polybenzimidazole polymer; the cross-linking agent is selected from 4, 4 '-bis (chloromethyl) biphenyl and / or p-chloromethyl benzene. And a reaction-non-diffusion phase conversion method is adopted, and the part which is not crosslinked or has a relatively low crosslinking degree is dissolved after the reaction, so that the sub-micron ionic conduction membrane for the flow battery is prepared. The cross-linking reaction enables the accumulation of polymers to be tighter, the pore size of the membrane is reduced, the mutual mixing of active substances in the flow battery is slowed down, and the coulombic efficiency of the battery is improved; and meanwhile, the transmission path of ions in the membrane can be effectively shortened by reducing the membrane thickness, so that the voltage efficiency of the battery is improved.

To improve the mechanical strength of hydrocarbon-based electrolyte membranes. [Solution] An electrolyte membrane 10A comprising a porous membrane 1 and a hydrocarbon-based electrolyte polymer filled in the pores 2 of the porous membrane 1, wherein the porous membrane 1 is formed of a material containing a hydrocarbon-based resin, and the differential permeate flow rate distribution of the porous membrane 1 measured by the bubble point method has a peak in the pore diameter range of 0.01 to 1 μm.

A fuel-cell-powered aircraft system has integrated air-cooled fuel cell stacks positioned within an interior space of at least one wing of an aircraft. An airflow path is positioned in contact with at least a heat exchanger of the fuel cell stack. The induced flow of air through the airflow path cools the heat exchanger. The efficiently-induced flow of air for cooling the fuel cell stack has a zero or minimal drag penalty.

A propulsion system for an aircraft includes a fan section having a fan; a turbomachine including a compressor section, a combustion section, and a turbine section arranged in serial flow order; at least one electric machine; a fuel cell assembly configured to supply power to the electric machine; and a controller including a memory and one or more processors. One or both of the turbomachine and the at least one electric machine are configured to drive rotation of the fan of the fan section. The fuel cell assembly includes at least one fuel cell, a first fluid inlet for receiving a flow of pressurized air, and a second fluid inlet for receiving a flow of fuel.

This porous metal sheet is formed of a porous metal having a skeleton with a three-dimensional network structure. The porous metal sheet has a main surface in which a plurality of grooves are formed. An upper chamfer is formed on the upper corner of each of the plurality of grooves. A lower chamfer is formed on the lower corner of each of the plurality of grooves.

This electrochemical cell comprises a metal plate, an element part, and an intermediate layer. The metal plate has a first surface and a second surface that is located on the side of said plate opposite from the first surface. The element part has: a first electrode facing the first surface; a solid electrolyte layer; and a second electrode that is located to the side opposite the first electrode such that the solid electrolyte layer is sandwiched therebetween. The intermediate layer is located between the first surface and the first electrode. In a plan view from the second electrode side, at least a portion of the contour of the intermediate layer is located outside of the contour of the element part.

Disclosed is a solid oxide stack. The solid oxide stack according to the present invention includes: a module formed by stacking a plurality of unit cells; an upper manifold and a lower manifold installed to support a top surface and a bottom surface of the module, respectively; wherein each unit cell includes a cell frame with a central opening, an air electrode current collector, a solid oxide cell, and a fuel electrode current collector sequentially stacked and seated within the central opening, an interconnect formed on the cell frame having a fuel flow channel on one surface and an air flow channel on the opposite surface, a cell sealant positioned at the interface between the cell frame and the solid oxide cell, and a fuel electrode sealant positioned at the interface between the cell frame and the interconnect; and wherein the air flow channel opens to at least one side of the module. According to the present invention, the stack provides a removable modular unit structure without requiring an air electrode sealant, allowing defective or aged cells to be easily replaced without affecting the stack's overall performance. This simplifies maintenance, extends the stack's lifespan, and reduces operational costs.