WO2020007677A1 - Procédé et dispositif de fabrication d'un demi-plaque bipolaire pour pile à combustible - Google Patents

Procédé et dispositif de fabrication d'un demi-plaque bipolaire pour pile à combustible Download PDF

Info

Publication number
WO2020007677A1
WO2020007677A1 PCT/EP2019/066985 EP2019066985W WO2020007677A1 WO 2020007677 A1 WO2020007677 A1 WO 2020007677A1 EP 2019066985 W EP2019066985 W EP 2019066985W WO 2020007677 A1 WO2020007677 A1 WO 2020007677A1
Authority
WO
WIPO (PCT)
Prior art keywords
media distribution
substrate
screen
sieve
unit
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/EP2019/066985
Other languages
German (de)
English (en)
Inventor
Martin Schoepf
Arne Stephen FISCHER
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2020007677A1 publication Critical patent/WO2020007677A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/023—Porous and characterised by the material
    • H01M8/0232—Metals or alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0809—Machines for printing sheets with cylindrical or belt-like screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0234—Carbonaceous material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E60/10—Energy storage using batteries
    • 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 invention relates to a method and an apparatus for
  • the invention also relates to a fuel cell which comprises at least one bipolar plate half which is produced by the method according to the invention.
  • Fuel cells are electrochemical energy converters in which, for example.
  • Hydrogen and oxygen are converted into water, electrical energy and heat.
  • Fuel cell stacks are constructed from membrane electrode units and bipolar plates which are arranged alternately one above the other.
  • the bipolar plates which can be formed from two adjacent bipolar plate halves, serve to supply the electrodes with starting materials and to cool the fuel cell stack.
  • the bipolar plates have a distributor structure which guides fluids containing starting material along the electrodes.
  • the distributor structures serve to guide a cooling fluid along the further distributor structures.
  • These distributor structures are designed as channels, as a result of which the different fluids can be conducted.
  • WO 2017/215872 A1 discloses a method for producing a bipolar plate for a fuel cell, a plate-shaped workpiece being produced in this method, and a media distribution structure being introduced into the plate-shaped workpiece.
  • the background of the invention lies in the fact that the gas diffusion layer (GDL) which is in contact with the bipolar plate half and pressurized penetrates into the channel structure, so that the effective channel cross section available for media distribution is reduced.
  • GDL gas diffusion layer
  • Bipolar plate half accumulates water on the cathode side. This water is typically formed between the GDL and the membrane and has to leave the GDL in the direction of the air channels in the half of the bipolar plate, where it is removed by the air flow. However, this process is hindered by the webs on the bipolar plate half resting on the GDL, so that there is water accumulation there.
  • a conventional bipolar plate half is typically produced by embossing a channel structure in an approximately 0.1 mm thick sheet metal to ensure operating media with a low pressure drop and without major costs.
  • channel dimensions in particular the channel width, limits are thereby specified which result from the sheet thickness and the stamping process.
  • the object of the present invention is therefore a method
  • the object is achieved by a method for producing a bipolar plate half for a fuel cell.
  • This method comprises the steps of synchronously passing an endlessly rotating screen past a moving substrate, applying a media distribution material onto the substrate by means of a screen printing step to form a
  • a screen in the sense of the invention is understood to be a mask which has a negative shape of the structure to be created. This mask may also be around support structures for stabilizing the
  • a synchronized passing in the sense of the invention is understood to mean that the speed of the screen and the substrate are matched to one another. As a result, there is no relative speed between the screen and the substrate.
  • Media distribution structure or media distribution material is understood to be the channel structure provided for guiding and distributing the media or the material from which the channel structure is produced.
  • An electrically conductive paste, in which carbon black is embedded in a binder, is preferably used as the media distribution material. The use of soot in one
  • Media distribution material has the advantage that the coated sheets used in the prior art have a higher corrosion resistance.
  • the substrate is sheet metal or foil.
  • the method according to the invention makes it possible to provide significantly smaller web widths, channel widths and channel heights. Likewise, more flexible
  • Structures are made.
  • the method according to the invention thus forms flexible structures on the order of magnitude of preferably 100 pm to 500 pm. Structures in one are particularly preferred
  • the GDL Due to the smaller channel width, the GDL is better supported, so that the GDL hardly penetrates into the channel structure and thus the cross section is not reduced. Due to the smaller width of the webs, the water drainage is hardly hindered, so that there is hardly any
  • the invention has the additional advantage that a minimum stack height is achieved due to the lower channel height of the bipolar plate half. This results in a smaller space requirement for the fuel cell. Thanks to the endlessly circulating sieve and the screen printing step, this has
  • the method according to the invention additionally has the advantage that a bipolar plate half produced using this method can nevertheless be produced economically.
  • a heating step of the media distribution material applied to the substrate is carried out after the screen has been lifted off the substrate.
  • a heating step is carried out between applying the media distribution material and lifting off the screen.
  • the media distribution structures are pre-consolidated before the sieve is lifted off. This improves the detachability of the screen from the media distribution structures and reduces the proportion of media distribution material residues in the screen. This has the advantage that the shape accuracy of the media distribution structures is improved.
  • the method comprises the step of cleaning the screen after it has been lifted off
  • the method advantageously comprises the step of checking the screen after it has been lifted off the substrate. In this step, it is checked in particular whether the screen has defects which affect the formation of the media distribution structure or could lead to failure of the screen. In addition, it can preferably be checked whether a previous cleaning step has been successful. This ensures a high and consistent quality of the media distribution structures.
  • the method preferably comprises the step of applying a separating agent to the screen before applying the media distribution material.
  • a separating agent is understood to mean an agent which enables the sieve to be simply lifted off the substrate. This is to prevent parts of the media distribution structure from getting caught in the sieve during lifting. This ensures a high quality of the media distribution structure. Also one after the take off
  • a means provided as a permanent release agent can also be applied to the screen before first use. In this case, a constant application step during the process could be omitted.
  • Media distribution material uses a material which comprises graphite particles and binders, or metal particles and binders. These graphite particles and binders are preferably applied as a paste. The use of such a material has the advantage of being used in the prior art
  • coated sheets have a higher corrosion resistance. As a result, the service life of a fuel cell produced in this way can be extended.
  • the metal particles made of stainless steel are particularly preferred. A later sintering step is necessary here.
  • the object of the invention is additionally achieved by a device for
  • the device comprises an endlessly circulating sieve, by means of which a media distribution structure can be formed on a substrate, a drive unit which is set up to drive and deflect the sieve so that the sieve can be circulated endlessly, a coating unit, by means of which a media distribution material is screen-printed can be applied to the substrate, and a heating unit for heating and drying the media distribution material, the heating unit being arranged in the direction of movement of the substrate after a region of the endlessly rotating sieve.
  • the screen has a mask for forming media distribution structures in the form of columns, channels and / or curved webs. This allows one to get to the one you want
  • Application area of the bipolar plate half desired media distribution structure can be produced.
  • a fuel cell which comprises at least one bipolar plate half which is produced by the method according to the invention. This enables the advantages mentioned for the method to be achieved.
  • a fuel cell according to the invention is advantageously used in an electric vehicle (EV), in a hybrid vehicle (HEV) or in a plug-in hybrid vehicle (PHEV). As a result, the advantages mentioned for the fuel cell can be achieved.
  • EV electric vehicle
  • HEV hybrid vehicle
  • PHEV plug-in hybrid vehicle
  • FIG. 1 a shows a bipolar plate half according to the prior art with a channel cross section reduced by the GDL
  • FIG. 1b shows a bipolar plate half according to the prior art with water accumulation between the bipolar plate half and the GDL or in the GDL,
  • FIG. 2 shows an embodiment of the invention
  • FIG. 3 shows an enlarged representation of the essential process steps according to an embodiment of the invention, Figure 4 embodiments of the media distribution structures, and
  • Figure 5 shows an embodiment of an inventive
  • FIG. 1 a shows a bipolar plate half 14 according to the prior art with a gas diffusion layer (GDL) 18 lying against the bipolar plate half 14.
  • GDL gas diffusion layer
  • machined sheet 24 is formed with an initial thickness of about 0.1 mm, forms webs 28 which have an average web width d and abut the GDL 18.
  • a sum of web width d and an average channel width b for an air channel 32 is usually not less than approximately 1.5 to 2 mm for production reasons.
  • a duct cross section Q is available for the air duct 32.
  • FIG. 1 a additionally shows the deformation (see dashed lines) of the GDL 18 'under pressure. This reduces the available channel cross-section Q.
  • FIG. 1b A further bipolar plate half 14 according to the prior art is shown in FIG. 1b. With this bipolar plate half 14, water 18 “is formed on the webs 28. This water 18 “comes from the fact that it turns out to be
  • FIG. 2 is an illustration of an embodiment of the device 36 according to the invention for carrying out the method according to the invention.
  • the device 36 comprises a sieve 40, by means of which a media distribution structure (see FIG. 4) 44 can be applied to a moving substrate 48.
  • the media distribution structure see FIG. 4
  • Device 36 additionally comprises a drive unit 52, which has driven deflection rollers 56, via which the sieve 40 is deflected and is provided in an endlessly rotating manner along a sieve movement direction 58.
  • the Drive unit 52 synchronizes the speed of the screen 40 with the speed of the moving substrate 48.
  • the device 36 comprises a coating unit 60 which is activated by means of a screen printing step
  • Media distribution material 62 applies to the substrate 48.
  • a preheating unit 68 for heating and
  • Drying the applied media distribution material 62 arranged.
  • the sieve 40 When leaving the area of the endlessly rotating sieve 40, the sieve 40 is lifted off the substrate 48, so that a media distribution structure 44 remains on the substrate 48.
  • a heating unit 72 is arranged in the direction of movement 64 of the substrate 48 after a region of the endlessly circulating sieve 40, which heats and dries or hardens or sinters the media distribution structure 44 - depending on the material and binder used.
  • a cleaning unit 76 and a checking unit 80 are arranged. In these units 76, 80, the sieve 40 is cleaned and checked for errors.
  • preheating unit 68 is shown in the above exemplary embodiment, exemplary embodiments are also conceivable in which only the heating unit 72 is used alone. In the same way, a checking unit 80 and a cleaning unit 76 are only optionally provided.
  • Figure 3 in an enlarged view of the essential process steps according to an embodiment of the invention shown.
  • the coating unit 60 applies the media distribution material 62 to the substrate 48 in channels 84 of the screen 40.
  • the media distribution material 62 is heated by means of the preheating unit 68 in order to dry and solidify the media distribution material 62.
  • the screen 40 is lifted off the substrate 48, so that only the media distribution structure 44 remains on the substrate 48.
  • FIG. 4 shows two different examples of media distribution structures 44. Columns 88 and channels 92 are shown here as possible media distribution structures 44.
  • Bipolar plate half 14 shown. This figure shows the significantly smaller web width d, channel width b and web height h in relation to the bipolar plate half shown in FIG. 1 a according to the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un procédé et un dispositif de fabrication d'une moitié de plaque bipolaire (14) destinée à une pile à combustible. Le procédé comprend les étapes de passage synchronisée d'un écran (40) à circulation sans fin sur un substrat (48) en mouvement, d'application d'un matériau de distribution de milieu (62) sur le substrat (48) au moyen d'une étape de sérigraphie pour former une structure de distribution de milieu (44), et de retrait de l'écran (40) du substrat (48).
PCT/EP2019/066985 2018-07-06 2019-06-26 Procédé et dispositif de fabrication d'un demi-plaque bipolaire pour pile à combustible Ceased WO2020007677A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018211187.1 2018-07-06
DE102018211187.1A DE102018211187A1 (de) 2018-07-06 2018-07-06 Verfahren und Vorrichtung zum Herstellen einer Bipolarplattenhälfte für eine Brennstoffzelle

Publications (1)

Publication Number Publication Date
WO2020007677A1 true WO2020007677A1 (fr) 2020-01-09

Family

ID=67220776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/066985 Ceased WO2020007677A1 (fr) 2018-07-06 2019-06-26 Procédé et dispositif de fabrication d'un demi-plaque bipolaire pour pile à combustible

Country Status (2)

Country Link
DE (1) DE102018211187A1 (fr)
WO (1) WO2020007677A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113948734A (zh) * 2021-10-16 2022-01-18 素水新材料(上海)有限公司 燃料电池电堆

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020214436A1 (de) 2020-11-17 2022-05-19 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Herstellen eines Bauteils, Vorrichtung zum Herstellen eines Bauteils sowie Bauteil
DE102022102693B4 (de) 2022-02-04 2026-02-12 Audi Aktiengesellschaft Verfahren zur Herstellung einer Bipolarplattenhälfte oder einer Bipolarplatte für eine Brennstoffzelle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579433A1 (fr) * 1992-07-13 1994-01-19 Ichinose International Incorporated Machine d'impression sérigraphique automatique et méthode d'impression
US8689686B2 (en) * 2011-07-31 2014-04-08 Charles Moncavage Screen printing device with infinite loop stencil
DE102015224835A1 (de) * 2015-12-10 2017-06-14 Volkswagen Aktiengesellschaft Verfahren zum Herstellen einer Brennstoffzelle, eine mit dem Verfahren herstellbare Brennstoffzelle sowie Brennstoffzellenstapel
CN107394228A (zh) * 2017-08-25 2017-11-24 新奥科技发展有限公司 一种双极板及其制备方法
WO2017215872A1 (fr) 2016-06-14 2017-12-21 Robert Bosch Gmbh Procédé de fabrication d'une plaque bipolaire pour une pile à combustible et pile à combustible
WO2018108546A2 (fr) * 2016-12-12 2018-06-21 Robert Bosch Gmbh Procédé de fabrication d'une plaque bipolaire, plaque bipolaire pour pile à combustible et pile à combustible

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9808524D0 (en) * 1998-04-23 1998-06-17 British Gas Plc Fuel cell flow-field structure formed by layer deposition
WO2009001758A1 (fr) * 2007-06-27 2008-12-31 Local Independent Administrative Institute Tokyo Metropolitan Industrial Technology Research Institute Procédé de fabrication de plaque de séparation de pile à combustible et pile à combustible fabriquée à l'aide dudit procédé
DE102011015456A1 (de) * 2011-03-30 2012-10-04 Thomas Walther Siebdruckverfahren und dazu gehörige Vorrichtung
JP6639085B2 (ja) * 2014-12-19 2020-02-05 トヨタ自動車株式会社 導電性インク

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579433A1 (fr) * 1992-07-13 1994-01-19 Ichinose International Incorporated Machine d'impression sérigraphique automatique et méthode d'impression
US8689686B2 (en) * 2011-07-31 2014-04-08 Charles Moncavage Screen printing device with infinite loop stencil
DE102015224835A1 (de) * 2015-12-10 2017-06-14 Volkswagen Aktiengesellschaft Verfahren zum Herstellen einer Brennstoffzelle, eine mit dem Verfahren herstellbare Brennstoffzelle sowie Brennstoffzellenstapel
WO2017215872A1 (fr) 2016-06-14 2017-12-21 Robert Bosch Gmbh Procédé de fabrication d'une plaque bipolaire pour une pile à combustible et pile à combustible
WO2018108546A2 (fr) * 2016-12-12 2018-06-21 Robert Bosch Gmbh Procédé de fabrication d'une plaque bipolaire, plaque bipolaire pour pile à combustible et pile à combustible
CN107394228A (zh) * 2017-08-25 2017-11-24 新奥科技发展有限公司 一种双极板及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113948734A (zh) * 2021-10-16 2022-01-18 素水新材料(上海)有限公司 燃料电池电堆
CN113948734B (zh) * 2021-10-16 2023-10-13 素水新材料(上海)有限公司 燃料电池电堆

Also Published As

Publication number Publication date
DE102018211187A1 (de) 2020-01-09

Similar Documents

Publication Publication Date Title
DE102015010440B4 (de) Verfahren und Vorrichtung zum Herstellen einer Membran-Elektroden-Anordnung für eine Brennstoffzelle
DE112011102281B4 (de) Herstellungsverfahren und Herstellungsvorrichtung für eine Gasdiffusionsschicht einer Brennstoffzelle und Brennstoffzelle
DE10151134B4 (de) Diffusionsschicht für eine Brennstoffzelle und ein Verfahren zur Herstellung derselben
DE112007000017T5 (de) Verfahren zum Bilden einer Gasdiffusionsschicht für eine Brennstoffzelle
DE102020207671A1 (de) Gasdiffusionsschicht für eine Brennstoffzelle und Verfahren zur Herstellung derselben
WO2020007677A1 (fr) Procédé et dispositif de fabrication d'un demi-plaque bipolaire pour pile à combustible
DE102018214645A1 (de) Gasverteilerstruktur für ein Brennstoffzellensystem
WO2012079659A1 (fr) Procédé de fabrication d'une plaque bipolaire et plaque bipolaire pour une pile à combustible
DE102020006845A1 (de) Verfahren und Vorrichtung zur Herstellung einer Membran-Elektroden-Anordnung
WO2002052665A1 (fr) Procede pour la production d'electrodes, de composants, de demi-cellules et de cellules pour des convertisseurs d'energie electrochimiques
WO2022083899A1 (fr) Procédé de production d'ensemble à structure fonctionnelle pour pile à combustible et ensemble membrane-électrode
WO2021198137A1 (fr) Procédé de fabrication d'une structure conductrice de gaz et/ou d'électrons et pile à combustible/cellule d'électrolyse
WO2022129561A1 (fr) Procédé de fixation d'un joint d'etanchéité à une plaque bipolaire
EP3329535B1 (fr) L'unite membrane-électrode de pile à combustible et procédé de fabrication de celui-ci
DE102012205692A1 (de) Brennstoffzellen-Metallseparator und Edelmetallbeschichtungsverfahren
DE102015010422A1 (de) Verfahren zum Herstellen einer Membran-Elektroden-Anordnung für eine Brennstoffzelle
DE102020215873A1 (de) Verfahren zur Herstellung von Baugruppen und Verwendung eines Trennmittels
DE102020206334A1 (de) Verfahren zum Herstellen eines elektrischen Leiters und eine Vorrichtung zum Herstellen eines elektrischen Leiters
DE102018006496A1 (de) Verfahren zur Herstellung eines Bauteils
EP2424025A2 (fr) Procédé et dispositif de fabrication d'unités d'électrodes à membrane pour cellules de combustible
DE102025107614A1 (de) Siebdruckvorrichtung zum Bedrucken zumindest einer Substratplatte
DE102010056002A1 (de) Verfahren zur Herstellung einer Bipolarplatte
DE102015200804B4 (de) Membran-Elektroden-Einheit und Verfahren zur Herstellung
DE102022203815A1 (de) Verfahren zum Beschichten einer Verteilerplatte für eine elektrochemische Zelle
DE102018204602A1 (de) Gasverteilerstruktur für eine Brennstoffzelle

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19737479

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19737479

Country of ref document: EP

Kind code of ref document: A1