WO2023272477A1 - Structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur d'une plaque bipolaire de pile à combustible empilable - Google Patents

Structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur d'une plaque bipolaire de pile à combustible empilable Download PDF

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Publication number
WO2023272477A1
WO2023272477A1 PCT/CN2021/103019 CN2021103019W WO2023272477A1 WO 2023272477 A1 WO2023272477 A1 WO 2023272477A1 CN 2021103019 W CN2021103019 W CN 2021103019W WO 2023272477 A1 WO2023272477 A1 WO 2023272477A1
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WO
WIPO (PCT)
Prior art keywords
fuel
oxidant
cross
coolant inlet
conduits
Prior art date
Application number
PCT/CN2021/103019
Other languages
English (en)
Inventor
Maarten LANGENDONK
Weijian SHI
Original Assignee
Interplex (Suzhou) Precision Engineering Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interplex (Suzhou) Precision Engineering Ltd. filed Critical Interplex (Suzhou) Precision Engineering Ltd.
Priority to PCT/CN2021/103019 priority Critical patent/WO2023272477A1/fr
Publication of WO2023272477A1 publication Critical patent/WO2023272477A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
    • H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • H01M8/0278—O-rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present disclosure relates generally to the field of proton exchange membrane fuel cells, in particular to a fuel, oxidant or coolant inlet/outlet structure of a stackable fuel cell bipolar plate.
  • a fuel cell generally includes a membrane electrode assembly and a bipolar plate.
  • the bipolar plate mainly plays a role in supporting the fuel cell, providing for current conduction, fuel and oxidant gas distribution, and reaction heat dissipation in the fuel cell.
  • bipolar plates are a key component of proton exchange membrane (PEM) fuel cells. As mentioned above, they uniformly distribute fuel gas, such as hydrogen, and oxidant, such as air, conduct electrical current from cell to cell, remove heat from the active area, and prevent leakage of gases and coolant. Bipolar plates also significantly contribute to the volume, weight and cost of proton exchange membrane fuel cell stacks.
  • PEM proton exchange membrane
  • a bipolar plate made of metal material is composed of an anode sheet on the hydrogen side and a cathode sheet on the air side.
  • the anode and cathode sheets are bonded together, e.g. by welding, gluing or brazing, and active areas and gas distribution areas are formed.
  • an inlet structure is provided between inlet passages and an associated gas distribution area, and several inlet conduits are provided.
  • the inlet conduits are important components of the bipolar plate.
  • a bipolar plate usually has three inlet passages and three outlet passages, which are used to pass hydrogen, air and cooling water respectively.
  • Each inlet/outlet passage is provided with several inlet/outlet conduits for communicating respective the inlet/outlet passage and an associated active area of the fuel cell.
  • a sealant needs to be placed along a perimeter of and at both sides of the bipolar plate, and a sealant also needs to be placed around the perimeters of the respective inlet/outlet passages at both sides of the bipolar plate.
  • an annular liquid silicone gasket is normally attached around the inlet/outlet passages through an injection molding process, such as to seal the inlet/outlet passages so that continuous inlet/outlet passages are obtainable by stacking a plurality of bipolar plates.
  • Document CN109417177A shows one solution for providing structural stability to prevent deformation or collapse when applying via injection molding, using a liquid rubber molding material, of a sealing gasket over inlet/outlet channels/passages from a manifold opening in a bipolar plate to a reaction surface thereof. It discloses a production method for separator integrated gasket for fuel cells.
  • a pair of separators having adjacent sections that approach each other and separation sections that separate from each other when the pair of separators are in a stacked state and having manifold holes opened in the separation sections, are stacked such that the manifold holes and an inner circumferential hole continue on from each other, same being stacked via a spacer having the inner circumferential hole opened therein and capable of having fluid flow therethrough in a direction orthogonal to the stacking direction; a stacked product of the separators and the spacer is arranged inside a mold; and a liquid rubber molding material is filled into, and cured in, gasket-molding cavities defined between the spacer, the opposite side surface, and the mold, in the separator.
  • Document JP2011028939A shows an alternative solution for preventing blocking of a channel caused by the collapse of a connecting bridge. It also shows the application of a seal member (rubber seal member) by injection molding or the like, where the seal member uses, for example, a seal material such as EPDM, NBR, fluorine rubber, silicon rubber, fluorosilicon rubber, butyl rubber, natural rubber, styrene rubber, chloroplane, or acrylic rubber, a cushion material, or a packing material.
  • a seal material such as EPDM, NBR, fluorine rubber, silicon rubber, fluorosilicon rubber, butyl rubber, natural rubber, styrene rubber, chloroplane, or acrylic rubber, a cushion material, or a packing material.
  • a fuel cell making up the fuel cell stack is formed by holding an electrolytic film-electrode structure between a first metal separator and a second metal separator.
  • the first metal separator is provided with a connecting bridge communicatively connecting an oxidizer gas channel to an oxidizer gas inlet communicating hole.
  • the connecting bridge has a plurality of resin passage members arranged intermittently apart from each other on a surface, where passages are formed between the resin passage members. Since the connection bridge part has the plurality of resin passage members, the dimensional change by durability deterioration can be favorably suppressed.
  • a first seal member (rubber seal member) is integrally formed on the surfaces of the first metal separator by injection molding or the like around the outer peripheral edge of the first metal separator.
  • the first seal member uses, for example, a seal material such as EPDM, NBR, fluorine rubber, silicon rubber, fluorosilicon rubber, butyl rubber, natural rubber, styrene rubber, chloroplane, or acrylic rubber, a cushion material, or a packing material.
  • An object of the present invention is to provide an improved fuel, oxidant or coolant inlet/outlet structure of a stackable fuel cell bipolar plate, providing improved structural stability when applying via injection molding a sealing gasket over inlet/outlet conduits.
  • a fuel, oxidant or coolant inlet/outlet structure of a stackable fuel cell bipolar plate comprising an anode sheet and a cathode sheet bonded together and comprising: one or more pairs of fuel, oxidant or coolant inlet/outlet passages; a sealant placed around the perimeters of the respective inlet/outlet passages at both sides of the bipolar plate and bonded thereto; a sealant placed along a perimeter of and at both sides of the bipolar plate; a plurality of conduits providing for fluid communication between the fuel or oxidant inlet/outlet passages and an associated active area at the anode sheet or cathode sheet or fluid communication between the coolant inlet/outlet passages and a cooling channel located between the anode sheet and the cathode sheet, which is characterised in that the respective conduits comprise: a first cross-section half, integrally formed with the anode sheet, and a second cross-section half, integrally formed
  • the perimeters of the first cross-section half and of the second cross-section half form semi-circular arches.
  • the perimeters of the first cross-section half and of the second cross-section half respectively form segments of circular arches.
  • the perimeters of the first cross-section half and of the second cross-section half respectively form semi-elliptical arches.
  • the perimeters of the first cross-section half and of the second cross-section half respectively form segments of semi-elliptical arches.
  • All of the above first to fourth alternative embodiments provide improved structural stability when applying via injection molding a sealing gasket over inlet/outlet conduits.
  • the respective conduits are arranged for fluid communication with an associated fuel, oxidant or coolant inlet/outlet passage via a manifold structure opening towards the associated fuel, oxidant or coolant inlet/outlet passage via a plurality of manifold openings, which provide for improved flow characteristics.
  • each respective manifold opening is trapezoidal, which further provide for improved flow characteristics.
  • each respective manifold structure is trapezoidal, which still further provide for improved flow characteristics.
  • each plurality of conduits are arranged parallel to each other and uniformly distributed which also further provide for improved flow characteristics.
  • each plurality of conduits are arranged parallel to each other and uniformly distributed and parallel to the manifold openings, and that the manifold openings and conduits are staggered, which yet further provide for improved flow characteristics.
  • the number of manifold openings and conduits in the above embodiments is suitable between 10 and 20, to ensure sufficient flows, and for some such embodiments the number of manifold openings and conduits is 15.
  • the plurality of conduits providing for fluid communication between the fuel or oxidant inlet/outlet passages and an associated active area at the anode sheet or cathode sheet are arranged to provide such fluid communication via a respective fuel or oxidant distribution area of the bipolar plate, which provide for improved distribution of flows and thus improved performance of the bipolar plate.
  • bipolar plate that comprises a fuel, oxidant or coolant inlet/outlet structure as described herein.
  • a proton exchange membrane fuel cell that comprises a fuel cell stack consisting of a predetermined number of unit cells comprising bipolar plates having at least one fuel, oxidant or coolant inlet/outlet structure as described herein.
  • a beneficial effect of the proposed solution is the possibility to obtain a bipolar plate inlet/outlet structure with high compressive strength where the two arch bridges, formed by the perimeters of the respective inlet/outlet passages support their associated conduit during application of the sealant around the perimeters of the respective inlet/outlet passages.
  • the stress applied to the sealant during an injection molding process for application thereof will be distributed by the arches to their respective abutments, that carry the loads and keep the ends of the respective arches from spreading out.
  • the pressure resistance of the respective arches are strong, and they are not easy to deform, reducing the problem of leaking and flashing.
  • the proposed solution seems to improve the quality of the injection molding process, ensure smooth flow through the inlet/outlet conduits and thus promote normal usability of the bipolar plate.
  • Fig. 1 illustrates schematically a bipolar plate having a respective pair of fuel, oxidant and coolant inlet/outlet passages and inlet/outlet structures according to present invention
  • Fig. 2 illustrates schematically oxidant conduits of an existing oxidant inlet/outlet structure
  • Fig. 3 illustrates schematically an inlet/outlet structure of the present invention
  • Fig. 4 illustrates schematically a structure of inlet/outlet conduits of the present invention
  • Fig. 5 illustrates schematically a proton exchange membrane fuel cell the stack of which comprises bipolar plates comprising fuel, oxidant or coolant inlet/outlet structures according to present invention.
  • a fuel, oxidant or coolant inlet/outlet structure 1 (illustrated within the dash-dotted circle) of a stackable fuel cell bipolar plate 2, of figure 1, providing improved structural stability when applying via injection molding a sealing gasket 4 over inlet/outlet conduits 6, and usually, at the same time, a sealing gasket 5 along a perimeter of and at both sides of the bipolar plate 2.
  • Gasket 4 overmolding is suitably performed in high-precision processes capable of one-time molding of both anode and cathode sides, during which molding it is important to avoid any deformation of the bipolar plate flow conduits 6.
  • a tool for forming the sealing gasket 4 must be extremely tight and press into the structure to prevent leakage (flashing) when the gasket material is injected into the mold.
  • Silicon or ethylene propylene diene monomer (EPDM) rubber material may be used as gasket material.
  • EPDM ethylene propylene diene monomer
  • a silicon material called liquid silicon rubber (LSR) may be used for the gasket 4.
  • the LSR material is normally a 2-component compound and is liquid like water at injection.
  • a bipolar plate 2 fuel, oxidant or coolant inlet/outlet structure 1 with high compressive strength.
  • the bipolar plate 2 is divided into sealing areas, distribution areas 10 and active areas 9.
  • the sealing areas includes pairs, usually three, of fuel, oxidant or coolant inlet/outlet passages 3.
  • the bipolar plate 2 comprises and anode sheet 2a and a cathode sheet 2b which are bonded together.
  • the fuel inlet/outlet passages 3 are used to pass fuel, e.g. hydrogen, and the oxidant inlet/outlet passages 3 are used to pass oxidant, e.g. oxygen.
  • a ring of sealant 4 (illustrated as a dashed) is placed around the fuel passages 3 and oxidant passages 3, so that hydrogen or air can only enter through manifold openings 8 and enter the active area 9 through inlet conduits 6 for reaction.
  • Cooling passages (not shown) are used to provide for cooling.
  • the coolant e.g. water, is arranged to flow into a cooling channel between the sheets through coolant inlet conduits.
  • the fuel passage and the oxidant passage each have an intake-side wall.
  • a plurality of intake manifold openings 8 are provided on the intake-side wall and inlet conduits 6 provide a connection of an associated manifold structure 7 with an associated adjacent distribution area 10, which in turn communicate with an active area 9 of the bipolar plate 2.
  • each respective manifold opening 8 is trapezoidal, and in some embodiments also a cross section of each respective manifold structure 7 is trapezoidal.
  • the coolant inlet passage 3 includes a plurality of manifold openings 8, an intake manifold structure 7 and a plurality of coolant conduits 6.
  • the manifold openings 8 of the inlet passages 3 may be arranged at an oblique intake-side wall (not shown) , i.e. the inlet passages 3 may have other shapes than the shown essentially rectangular shape, such as e.g. a trapezoidal shape with the manifold openings 8 arranged at an oblique intake-side wall thereof.
  • each manifold opening 8 opens at the side wall of the associated fuel or oxidant inlet passage 3.
  • the other end of each respective side wall manifold opening 8 communicates with the oxidant intake manifold structure 7.
  • a plurality of oxidant manifold openings 8 and a plurality of fuel or oxidant conduits 6 are communicated on both sides of the fuel or oxidant intake manifold structure 7.
  • the respective conduits 6 of the fuel, oxidant or coolant inlet/outlet structures 1 described herein are arranged for fluid communication with an associated fuel, oxidant or coolant inlet/outlet passage 3 via a manifold structure 7 opening towards the associated fuel, oxidant or coolant inlet/outlet passage 3 via a plurality of manifold openings 8.
  • the plurality of conduits 6 providing for fluid communication between the fuel or oxidant inlet/outlet passages 3 and an associated active area 9 at the anode sheet 2a or cathode sheet 2b are arranged to provide such fluid communication via a respective fuel or oxidant distribution area 10 of the bipolar plate 2.
  • the respective fuel, oxidant or coolant conduits 6 comprises a first cross-section half 11, integrally formed with the anode sheet 2a, and a second cross-section half 12, integrally formed with the cathode sheet 2b.
  • the first cross-section half 11 and the second cross-section half 12 are arranged complementary opposing each other, such that the first cross-section half 11 and the second cross-section half 12 jointly form the full cross-section of the respective conduit 6.
  • a sealant 4 (illustrated as a dashed line in figure 3) is attached to the surface of the anode sheet 2a and the cathode sheet 2b and located above the respective conduits 6, and a sealant 5 (also illustrated as a dashed line in figure 3) is placed along a perimeter of and at both sides of the bipolar plate 2.
  • a sealant 5 (also illustrated as a dashed line in figure 3) is placed along a perimeter of and at both sides of the bipolar plate 2.
  • the stress applied to the sealant 4 during an injection molding process for application thereof will be distributed by the arches to their respective abutments, that carry the loads and keep the ends of the respective arches from spreading out.
  • the stress will be concentrated to the root of the respective arches, so that the structure is not prone to deformation and can resist greater pressure strength.
  • the maximum pressure that can be withstood is 1.72X10 3 MPa, while a semi-circular arch shape, as described herein, can withstand a maximum pressure of 2.8X10 3 MPa.
  • the deformation of the prior art bridge structure is 0.0145mm while the deformation of the structure adopting the solution with opposing arch bridges, as described herein, is 0.0015mm.
  • the perimeters of the first cross-section half 11 and of the second cross-section half 12 form semi-circular arches.
  • the resulting full cross-section of the respective conduit 6 will thus be circular.
  • the perimeters of the first cross-section half 11 and of the second cross-section half 12 respectively form segments of circular arches.
  • the resulting full cross-section of the respective conduit 6 will thus be formed by the facing segments of circular arches.
  • the perimeters of the first cross-section half 11 and of the second cross-section half 12 respectively form semi-elliptical arches.
  • the resulting full cross-section of the respective conduit 6 will thus be formed by the facing semi-elliptical arches.
  • the perimeters of the first cross-section half 11 and of the second cross-section half 12 respectively form segments of semi-elliptical arches.
  • the resulting full cross-section of the respective conduit 6 will thus be formed by the facing segments of semi-elliptical arches.
  • the respective conduits 6 of each plurality of conduits 6 are arranged parallel to each other and uniformly distributed. In further embodiments the respective conduits 6 of each plurality of conduits 6 are arranged parallel to each other and uniformly distributed and parallel to the manifold openings 8, and the manifold openings 8 and conduits 6 are staggered, as illustrated in figure 4.
  • the number of manifold openings 8 and conduits 6 is between 10 and 20, in particular embodiments the number of manifold openings 8 and conduits 6 is 15.
  • bipolar plate 2 as illustrated in figure 1, that comprises a fuel, oxidant or coolant inlet/outlet structure 1 as described herein.
  • a proton exchange membrane fuel cell 13 as illustrated in figure 5, that comprises a fuel cell stack 14 consisting of a predetermined number of unit cells comprising bipolar plates 2 having at least one fuel, oxidant or coolant inlet/outlet structure 1 as described herein.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

Est décrite ici une structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur (1) d'une plaque bipolaire empilable (2) où une feuille d'anode (2a) et une feuille de cathode (2b) sont liées l'une à l'autre et possède une ou plusieurs paires de passages d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur (3). Des agents d'étanchéité (4, 5) sont placés autour des périmètres des passages d'entrée/sortie (3) et le long d'un périmètre de la plaque bipolaire (2). Une pluralité de conduits (6) permettent une communication fluidique entre les passages d'entrée/sortie de combustible ou d'oxydant (3) et une zone active (9) associée au niveau de la feuille d'anode (2a) ou de la feuille de cathode (2b) ou une communication fluidique entre les passages d'entrée/sortie de fluide caloporteur et un canal de refroidissement situé entre les feuilles (2a, 2b). Chaque conduit (6) comprend une première moitié de section transversale (11), formée d'un seul tenant avec la feuille d'anode (2a), et une seconde moitié de section transversale (12), formée d'un seul tenant avec la feuille de cathode (2b), et agencées de façon complémentaire l'une par rapport à l'autre. Les périmètres respectifs des première et seconde moitiés de section transversale (11, 12) forment des ponts arqués, supportant leur conduit (6) associé au-dessous de l'agent d'étanchéité (4).
PCT/CN2021/103019 2021-06-29 2021-06-29 Structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur d'une plaque bipolaire de pile à combustible empilable WO2023272477A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/103019 WO2023272477A1 (fr) 2021-06-29 2021-06-29 Structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur d'une plaque bipolaire de pile à combustible empilable

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PCT/CN2021/103019 WO2023272477A1 (fr) 2021-06-29 2021-06-29 Structure d'entrée/sortie de combustible, d'oxydant ou de fluide caloporteur d'une plaque bipolaire de pile à combustible empilable

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028939A (ja) 2009-07-23 2011-02-10 Honda Motor Co Ltd 燃料電池スタック
US20170062849A1 (en) * 2015-08-26 2017-03-02 Commissariat A L'energie Atomique Et Aux Energies Alternatives Stack of electrochemical cells divided up into separate groups comprising a homogenization compartment
US20180269497A1 (en) * 2015-09-18 2018-09-20 Reinz-Dichtungs-Gmbh Separator plate for an electrochemical system
CN109417177A (zh) 2016-08-16 2019-03-01 Nok株式会社 燃料电池用隔板一体型密封垫的制造方法
US20190097244A1 (en) * 2017-09-25 2019-03-28 Honda Motor Co., Ltd. Fuel cell metal separator and power generation cell

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028939A (ja) 2009-07-23 2011-02-10 Honda Motor Co Ltd 燃料電池スタック
US20170062849A1 (en) * 2015-08-26 2017-03-02 Commissariat A L'energie Atomique Et Aux Energies Alternatives Stack of electrochemical cells divided up into separate groups comprising a homogenization compartment
US20180269497A1 (en) * 2015-09-18 2018-09-20 Reinz-Dichtungs-Gmbh Separator plate for an electrochemical system
CN109417177A (zh) 2016-08-16 2019-03-01 Nok株式会社 燃料电池用隔板一体型密封垫的制造方法
US20190097244A1 (en) * 2017-09-25 2019-03-28 Honda Motor Co., Ltd. Fuel cell metal separator and power generation cell

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