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WO2015169543A1 - Plaque bipolaire, pile à combustible et procédé de production de la plaque bipolaire - Google Patents

Plaque bipolaire, pile à combustible et procédé de production de la plaque bipolaire Download PDF

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Publication number
WO2015169543A1
WO2015169543A1 PCT/EP2015/057948 EP2015057948W WO2015169543A1 WO 2015169543 A1 WO2015169543 A1 WO 2015169543A1 EP 2015057948 W EP2015057948 W EP 2015057948W WO 2015169543 A1 WO2015169543 A1 WO 2015169543A1
Authority
WO
WIPO (PCT)
Prior art keywords
bipolar plate
edge
seal
fuel cell
base body
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2015/057948
Other languages
German (de)
English (en)
Inventor
Ian Stewart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of WO2015169543A1 publication Critical patent/WO2015169543A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M8/0202—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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • 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
    • H01M8/0286—Processes for forming seals
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • Bipolar plate fuel cell and method for producing the bipolar plate
  • the invention relates to a bipolar plate for a fuel cell, wherein the bipolar plate has a base body and a sealing material on the base body. Furthermore, the invention relates to a fuel cell with a bipolar plate according to the invention and a method for producing the bipolar plate.
  • Fuel cells use the chemical transformation of a fuel with oxygen to water to generate electrical energy.
  • fuel cells contain as core component the so-called membrane electrode assembly (MEA for membrane electrode assembly), which is a composite of a proton-conducting membrane and one, both sides of the membrane disposed electrode (anode and cathode).
  • MEA membrane electrode assembly
  • GDL gas diffusion layers
  • the fuel cell is formed by a large number of stacked MEAs whose electrical powers are added together.
  • the fuel in particular hydrogen H 2 or a hydrogen-containing gas mixture
  • the fuel is supplied to the anode, where an electrochemical oxidation of H 2 to H + takes place with emission of electrons.
  • an electrochemical oxidation of H 2 to H + takes place with emission of electrons.
  • the electrolyte or the membrane which separates the reaction spaces gas-tight from each other and electrically isolated, takes place (water-bound or anhydrous) transport of protons H + from the anode compartment in the cathode compartment.
  • the electrons provided at the anode are supplied to the cathode via an electrical line.
  • the cathode becomes oxygen or an oxygen-containing one
  • PEMs polymer electrolyte membranes
  • the membrane itself consists of a polymer electrolyte.
  • acid-modified polymers in particular perfluorinated polymers
  • the most common representative of this class of polymer electrolytes is a membrane a sulfonated polytetrafluoroethylene copolymer (trade name: National; copolymer of tetrafluoroethylene and a sulfonyl fluoride derivative of a perfluoroalkyl vinyl ether).
  • the electrolytic conduction takes place via hydrated protons, which is why the presence of water is a prerequisite for the proton conductivity and moistening of the operating gases is required during operation of the PEM fuel cell. Due to the necessity of the water, the maximum operating temperature of these fuel cells is limited to below 100 ° C at standard pressure.
  • H-PEM fuel cells high-temperature polymer electrolyte membrane fuel cells
  • HT-PEM fuel cells high-temperature polymer electrolyte membrane fuel cells
  • PBI phosphoric acid-doped polybenzimidazole
  • the membrane-electrode assemblies are stacked alternately with electrically conductive bipolar plates of the fuel cell and thus connected in series. During operation of the fuel cell, it must be ensured that neighboring bipolar plates do not come into electrically conductive contact.
  • WO 201 1/002823 discloses a bipolar plate whose outer edge is enclosed by a seal.
  • the bipolar plate and the seal form an assembly.
  • the seal can be molded onto the bipolar plate.
  • bipolar plates are known whose outer edge within a
  • Fuel cell stack has an air gap to adjacent membrane electrode assemblies and / or adjacent bipolar plates. Otherwise, possible creepage currents are prevented or at least reduced by the air gap. This results in a larger air gap in a larger creepage distance. If it is appropriate to increase the creepage distance and thus the air gap, thereby also a cell distance of single cells of the fuel cell is increased, which usually leads to a reduced volumetric power density. Does it come to the assembly or operation of the fuel cell to deformations of the
  • Insulation rings not rigidly attached.
  • the invention is an object of the invention to provide a bipolar plate and a fuel cell available, which is characterized by increased reliability and reliability while cost-effective production. Furthermore, a manufacturing method for cost-effective production of the bipolar plate is to be made available.
  • a bipolar plate for a fuel cell.
  • the bipolar plate has a base body and a sealing material on the base body. Characteristically, it is provided that the base body forms at least one edge elevation in an outer edge region, and the bipolar plate has an electrically insulating material at a maximum of the at least one edge elevation.
  • the bipolar plate according to the invention an increased short-circuit safety is ensured during operation of the fuel cell, since edges of the bipolar plates (with electrically conductive bodies) to each other by the arranged on the edge elevations, electrically insulating material are isolated. Furthermore, the bipolar plate according to the invention can be produced in a particularly cost-effective manner, since one known from the prior art,
  • a contact of the electrically insulating material with adjacent components for. B. produce a membrane electrode assembly.
  • the contact improves the stability of the fuel cell.
  • application of the electrically insulating material can preferably take place by rolling up or printing. This is possible because in the outer edge region, a surface of the base body is raised by means of at least one Randerhöhung, and thus now a less large distance to adjacent components by means of the electrically insulating material must be bridged.
  • the base body forms at least one seal increase and the bipolar plate forms the sealing material at a maximum of at least one
  • both the electrically insulating material and the sealing material can be applied.
  • the term "maximum” designates the highest point, that is to say the head end, the summit or the top of the seal elevation and the elevation of the rim.
  • the seal increase and the Randerhöhung forms the body with a material of the body, z. As a metal.
  • the elevations in particular the at least one seal elevation, may be elevations extending along a major surface of the bipolar plate.
  • the maxima of the elevations over their (entire) course are coplanar.
  • a bipolar plate typically has two main surfaces, which are those surfaces of greatest extent, that is to say the planar surfaces of the bipolar plate.
  • the elevations can also be called elevations.
  • the at least one edge elevation has the maximum at an outer edge of the edge region.
  • Edge enhancement not only the outer edge of the bipolar plate, but there also has the maximum amount of edge enhancement. This ensures that within a
  • the sealing material and the electrically insulating material are the same material. It is the sealing material and the electrically insulating material that is the same, electrically insulating sealing material. By this configuration, not two different materials must be handled in the production, but only a single material having the properties of both materials.
  • the electrically insulating sealing material is preferably an elastomer, in particular a fluororubber (FKM).
  • the base body forms edge margins arranged opposite one another in a cross section.
  • the cross-section is typically a cross-section perpendicular to a major surface of the bipolar plate.
  • the base body is open in the cross section at its outer edge.
  • the main body therefore has a divergent (expanding) cross-section towards its outer edge.
  • the open cross-section extends
  • At least two of the seal increases and / or at least two of the edge elevations to a
  • Center plane of the bipolar plate are designed symmetrically.
  • the base body in a cross section has a step shape towards its outer edge, wherein the step shape forms the at least one edge elevation.
  • the at least one edge enhancement is realized by means of a step of the base body.
  • the base body has a closed, stepped cross section within the edge region. It follows that the base body in the edge region typically only on one side has at least one edge elevation. The other side of the main body is within the fuel cell in the edge region by the step shape so far away from an adjacent component that can be dispensed with an additional insulation in the edge region on this page.
  • the step shape can be described as a shape which, in the cross section towards its outer edge, initially follows a course in the direction of a major surface of the bipolar plate, then in a direction away from the bipolar plate and then in the direction of the edge enhancement in the direction parallel to the main surface ,
  • Seal increases a higher compressive stiffness (ie perpendicular to the main surface) than the edge heights. If the two elevations are compressed by the same amount within a fuel cell, the larger the seal increases Compressive forces than on the edge elevations, thereby preventing an excessive loss of sealing force (due to the edge elevations).
  • the at least one seal increase is executed closed around the circumference.
  • the closed area may be, for example, a chemically active area or a resource opening within the fuel cell.
  • the at least one edge elevation (and on it the electrically insulating material) may be designed to be closed around the circumference, whereby a uniform load distribution of the fuel cell, ie within a fuel cell stack. But it can also be several single or interrupted all around
  • the edge elevation and / or the electrically insulating material is formed (shaped) such that the electrically insulating material does not assume a sealing function on the edge elevation. This results in a clear functional separation of the edge elevation and / or the electrically insulating material
  • Sealing material (and the preferred seal increase) and arranged on the base body outside the sealing material, electrically insulating material and the edge elevation. With a loss of sealing force of the arranged on the seal increase sealing material, this is easily recognizable from outside the fuel cell, as exiting reactants or reaction products not from the electrically insulating material
  • At least one of the maxima is designed as a particular coplanar plateau.
  • the at least one seal elevation and / or the at least one edge elevation has a plateau with the height of the respective maximum, which is coplanar with the at least one further maximum. This results in a larger contact surface for the electrically insulating material and / or the sealing material.
  • the base body comprises at least one metallic sheet, wherein the at least one seal elevation and / or the at least one edge elevation are bends of the sheet.
  • the base body and also its seal increase and / or edge increase can be produced particularly inexpensively.
  • the base body has two metallic sheets, whereby the main body as a whole, including extending within the body channels, can be realized by means of the two sheets.
  • the seal increases may be outwardly facing beads in the sheet.
  • a cavity within the seal elevation, ie within the body, is preferably as a
  • the seal elevation can be used as a channel for a resource (eg, a coolant).
  • a resource eg, a coolant
  • a narrow side of the bipolar plate ie the end face
  • the electrically insulating material is covered by the electrically insulating material.
  • Seal material komplanare outer surfaces have.
  • the outer surfaces are angled to each other.
  • Such outer surfaces can preferably be produced by means of a tool with an angle-conforming surface.
  • a fuel cell with at least one bipolar plate according to the invention is provided.
  • the fuel cell is characterized by increased reliability and simplified assembly. Until now, special care had to be taken during assembly not to bend edge regions of the bipolar plates, in order not to reduce a required air gap. As a result of the at least one edge increase provided with the electrically insulating material, the assembly is thus simplified.
  • the simultaneous application of the materials saves time and money during production. This is especially true when the sealing material and the electrically insulating material are the same electrically insulating sealing material. In particular, one and the same tool is used for applying both materials, in particular the electrically insulating sealing material.
  • the production is simplified if the sealing material is applied to a maximum of at least one seal increase and the maxima of the increases Komplanar are, as a tool for applying the materials may have an angled surface.
  • the application comprises a rolling up or an imprinting.
  • the sealing material can be applied particularly effectively.
  • FIG. 3 shows a bipolar plate with one realized by means of a step of the basic body
  • FIG. 1 shows a partial region of a fuel cell 100 according to the prior art.
  • two bipolar plates 10 according to the prior art are shown with a membrane arrangement 11 arranged therebetween.
  • the visible in the figures part of the membrane assembly 1 1 z. B. an edge reinforcing film or the membrane of the membrane assembly 1 1 be.
  • the membrane assembly 1 1 may also be formed as a membrane-electrode assembly.
  • the bipolar plates 10 comprise an electrically conductive base body 12, which in the example of two adjoining and z. B. welded together (metal) sheets 13 is formed.
  • the base bodies 12 of the bipolar plates 10 each have two seal elevations 14. These are at their maxima 15 with a
  • the edges 17 (ie narrow sides of the main body 12) of the bipolar plate 10 are typically cut by laser. Nevertheless, such insulation is susceptible to deformation which the edges 17 (ie narrow sides of the main body 12) of the bipolar plate 10 are typically cut by laser. Nevertheless, such insulation is susceptible to deformation which the edges 17 (ie narrow sides of the main body 12) of the bipolar plate 10 are typically cut by laser. Nevertheless, such insulation is susceptible to deformation which the
  • FIG. 2 shows a partial region of a fuel cell 100 according to a preferred embodiment
  • the bipolar plate 10 now has edge elevations 20 arranged on both sides in an edge region 18 in addition to the seal elevations 14 (which may also be omitted depending on the configuration).
  • the margins increases
  • the seal elevation 14 and the elevation 20 are located farther outward relative to the seal risers 14 on the bipolar plate 10.
  • the seal elevation 14 and the elevation 20 have mutually coplanar maxima 15.
  • the maxima 15 thus lie per main surface 21 in each case in a common plane 23.
  • the planes 23 can also be parallel to one another and in particular also parallel to a center plane 25, which represents a contact plane of the two plates 13.
  • the maxima 15 of the elevations 14, 20 per main area 21 have equal heights 22 above the center plane 25.
  • the elevations 14, 20 are realized in the example as outwardly directed beads.
  • Seal material 16 and on the maxima 15 edge elevations 20 an electrically insulating material 24.
  • an electrically insulating material 24 instead of using two different materials 16, 24, a single material may also be provided. This is thus an electrically insulating
  • the maxima 15 are in the form of plateaus (also identified by the reference numeral 15), which are arranged to be coplanar with one another per main surface 21, that is to say in the same plane 23.
  • the edge elevations 20 have their maxima on an outer edge 17 of the edge region 18 (ie on an outer edge 17 of the main surface 21).
  • the bipolar plate ends too its edge 17 with the plateaus of the Randerhöhungen 20.
  • the edge elevations 20 are arranged opposite one another.
  • a fanning out 26 of the base body 12 to the outer edges 17 is also apparent.
  • the fanning 26 are realized by the two sheets 13 per bipolar plate 10 to the edge 17 of the respective bipolar plate 10 back
  • the main body 12 is thus formed open at its outer edge 17.
  • the main body of the bipolar plates 10 may also on their narrow sides 27 (end faces) have the electrically insulating material 24 (not shown).
  • edge elevations 20 support adjacent ones
  • edges 17 are subject to further tolerances than the air gap insulation and are therefore less expensive to manufacture and easier to handle. Even if an edge 17 of a sheet 13 is damaged, by the edge 17 of the second sheet 13 is an orientation
  • FIG. 3 likewise shows a fuel cell 100 and a bipolar plate 10 according to a preferred embodiment of the invention.
  • the bipolar plate 10 differs from the bipolar plate 10 according to FIG. 2 in that the base body 12 has a step shape in cross-section 28 in the edge region 18, ie towards its outer edge 17, wherein the step shape 28 forms the at least one edge elevation 20.
  • both plates 13 of the body 12 bent in the edge region 18 in a common direction, thereby realizing a Randerhöhung 20 on a major surface of the bipolar plate 10th
  • the edge elevations 20 of the bipolar plates 10 support membrane assemblies 1 1 (as opposed to the embodiment according to FIG. 2) on one side of the bipolar plate 10.
  • the stepped mold 28 now has an enlarged air gap 19 in comparison with the prior art.
  • the seal elevations 14 may be made stiffer than the edge heights 20. This can be realized (as in Figure 2) by the maxima 15 of
  • Seal elevations 14 are supported on both sides by flanks of the seal elevation 14, while the maxima 15 of the edge elevations 20 are supported only on one side by a respective edge of the edge elevations 20.
  • the flanks extend between the
  • the bipolar plates 10 according to the invention can be produced in accordance with a preferred method by firstly providing the main body 14 of the bipolar plate 10, in particular by producing it (for example by pressing it). This is followed by a simultaneous
  • the materials 16, 24 may be applied by being rolled up or printed. Due to the coplanar maxima, a tool for applying the sealing material 16 and the electrically insulating material 24 an angle-faithful (ie level) and the
  • Seal material 16 have directed surface.
  • the fuel cell 100 is more tolerant to deformation than conventional air gap insulations.
  • the invention can be used both to drive a motor vehicle and within
  • Electrolyzers are used. In addition, it is suitable both for low-temperature polymer electrolyte membrane fuel cells (NT-PEM fuel cells) according to the fuel cell 100, solid oxide fuel cells (SOFC) shown in the figures,
  • N-PEM fuel cells low-temperature polymer electrolyte membrane fuel cells
  • SOFC solid oxide fuel cells
  • PAFC Phosphoric acid fuel cells
  • AFC alkaline fuel cells

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

Abstract

L'invention concerne une plaque bipolaire (10) pour une pile à combustible (100). La plaque bipolaire (10) comprend un corps de base (12) et un matériau d'étanchéité (16) sur le corps de base (12). L'invention est caractérisée en ce que le corps de base (12) forme au moins une partie surélevée marginale (20) dans une partie marginale extérieure (18), et la plaque bipolaire (10) comprend un matériau électriquement isolant (24) au niveau maximum (15) de la ou des parties surélevées marginales (20). L'invention concerne en outre une pile à combustible (100) comprenant une plaque bipolaire (10) selon l'invention et un procédé de production de la plaque bipolaire (10).
PCT/EP2015/057948 2014-05-06 2015-04-13 Plaque bipolaire, pile à combustible et procédé de production de la plaque bipolaire Ceased WO2015169543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014208445.8A DE102014208445A1 (de) 2014-05-06 2014-05-06 Bipolarplatte, Brennstoffzelle und Verfahren zur Herstellung der Bipolarplatte
DE102014208445.8 2014-05-06

Publications (1)

Publication Number Publication Date
WO2015169543A1 true WO2015169543A1 (fr) 2015-11-12

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PCT/EP2015/057948 Ceased WO2015169543A1 (fr) 2014-05-06 2015-04-13 Plaque bipolaire, pile à combustible et procédé de production de la plaque bipolaire

Country Status (2)

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DE (1) DE102014208445A1 (fr)
WO (1) WO2015169543A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
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CN111755713A (zh) * 2019-03-29 2020-10-09 北京中氢绿能科技有限公司 一种凸脊型的燃料电池双极板密封结构
CN112805859A (zh) * 2018-10-10 2021-05-14 罗伯特·博世有限公司 用于密封燃料电池的方法
CN114171753A (zh) * 2021-12-01 2022-03-11 上海捷氢科技股份有限公司 燃料电池及其双极板

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DE102015222245A1 (de) * 2015-11-11 2017-05-11 Volkswagen Aktiengesellschaft Polarplatte für einen Brennstoffzellenstapel
DE202022106078U1 (de) * 2022-10-28 2024-02-05 Reinz-Dichtungs-Gmbh Separatorplatte für ein elektrochemisches System mit einer Schockabsorberanordnung

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DE19821767A1 (de) * 1998-05-14 1999-11-18 Siemens Ag Stapel aus Brennstoffzellen mit Flüssigkeitskühlung und Verfahren zur Kühlung eines BZ-Stapels
US20020122970A1 (en) * 2000-12-07 2002-09-05 Honda Giken Kogyo Kabushiki Kaisha Method for fabricating a seal-integrated separator
US20050271926A1 (en) * 2004-03-25 2005-12-08 Honda Motor Co., Ltd. Fuel cell and metal separator for fuel cell
JP2007172992A (ja) * 2005-12-21 2007-07-05 Nissan Motor Co Ltd 燃料電池セパレータ及びその製造方法
US20090291350A1 (en) * 2008-05-22 2009-11-26 Honda Motor Co., Ltd. Electrolyte electrode assembly and fuel cell

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JP4109570B2 (ja) * 2003-05-08 2008-07-02 本田技研工業株式会社 燃料電池
US20090000732A1 (en) * 2006-01-17 2009-01-01 Henkel Corporation Bonded Fuel Cell Assembly, Methods, Systems and Sealant Compositions for Producing the Same
JP2008010367A (ja) * 2006-06-30 2008-01-17 Toyota Motor Corp 燃料電池診断装置および診断方法
CN203086710U (zh) 2009-06-29 2013-07-24 艾利佛有限公司 双重全向传声器阵列校准系统

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Publication number Priority date Publication date Assignee Title
DE19821767A1 (de) * 1998-05-14 1999-11-18 Siemens Ag Stapel aus Brennstoffzellen mit Flüssigkeitskühlung und Verfahren zur Kühlung eines BZ-Stapels
US20020122970A1 (en) * 2000-12-07 2002-09-05 Honda Giken Kogyo Kabushiki Kaisha Method for fabricating a seal-integrated separator
US20050271926A1 (en) * 2004-03-25 2005-12-08 Honda Motor Co., Ltd. Fuel cell and metal separator for fuel cell
JP2007172992A (ja) * 2005-12-21 2007-07-05 Nissan Motor Co Ltd 燃料電池セパレータ及びその製造方法
US20090291350A1 (en) * 2008-05-22 2009-11-26 Honda Motor Co., Ltd. Electrolyte electrode assembly and fuel cell

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112805859A (zh) * 2018-10-10 2021-05-14 罗伯特·博世有限公司 用于密封燃料电池的方法
CN111755713A (zh) * 2019-03-29 2020-10-09 北京中氢绿能科技有限公司 一种凸脊型的燃料电池双极板密封结构
CN114171753A (zh) * 2021-12-01 2022-03-11 上海捷氢科技股份有限公司 燃料电池及其双极板
CN114171753B (zh) * 2021-12-01 2024-01-19 上海捷氢科技股份有限公司 燃料电池及其双极板

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