[go: up one dir, main page]

WO2024041685A1 - Plaque bipolaire, électrolyseur et procédé de fabrication de plaque bipolaire - Google Patents

Plaque bipolaire, électrolyseur et procédé de fabrication de plaque bipolaire Download PDF

Info

Publication number
WO2024041685A1
WO2024041685A1 PCT/DE2023/100422 DE2023100422W WO2024041685A1 WO 2024041685 A1 WO2024041685 A1 WO 2024041685A1 DE 2023100422 W DE2023100422 W DE 2023100422W WO 2024041685 A1 WO2024041685 A1 WO 2024041685A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
base body
bipolar plate
stilt
stilts
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/DE2023/100422
Other languages
German (de)
English (en)
Inventor
Claus Schaeperkoetter
Philipp Hoerning
Harald Hofmann
Martin Faerber
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2024041685A1 publication Critical patent/WO2024041685A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/8605—Porous electrodes
    • H01M4/861—Porous electrodes with a gradient in the porosity
    • 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
    • H01M8/0241—Composites
    • H01M8/0245—Composites in the form of layered or coated products

Definitions

  • the invention relates to a bipolar plate at least partially designed as a 3D printed part according to the preamble of claim 1.
  • the invention further relates to an electrochemical cell, in particular in the form of an electrolyzer for producing hydrogen, which has such a bipolar plate.
  • the invention further relates to a method for producing a bipolar plate.
  • a generic bipolar plate is known, for example, from DE 10 2020 203 398 A1.
  • the production of the well-known bipolar plate involves the additive manufacturing of a metal support.
  • the metal support should be built up by applying a metal layer to a base structure, which remains as part of the metal support after completion.
  • the metal layer can be applied in the form of several partial metal layers lying one on top of the other.
  • one of the partial metal layers can have a first porosity and another of the partial metal layers can have a second porosity that deviates from this.
  • an additively manufactured structure is called a media distribution structure.
  • the media distribution structure can, for example, be in the form of columns with an approximately teardrop-shaped cross section. It is possible to apply a media distribution structure to both sides of a flat base body.
  • the additive manufacturing process i.e. 3D printing process, can be a se- lective melting of a powder by a laser beam or by an electron beam.
  • porous layers should be produced additively.
  • a starting material is used that contains metal and other components.
  • the desired porosity should be achieved by removing the other components after the layer has been built up. The removal of the other components should be possible using a solvent or by increasing the temperature.
  • a slip intended for use in additive manufacturing processes is described, for example, in WO 2017/081160 A1.
  • the slip contains, among other things, a polymerizable substance and metal precursors present as particles.
  • Possible manufacturing steps mentioned in WO 2017/081160 A1 include indirect stereolithography (SLA) and digital light processing (DLP).
  • SLA indirect stereolithography
  • DLP digital light processing
  • the invention is based on the object of achieving progress compared to the stated prior art in the production of at least partially porous components of electrochemical cells, in particular electrolysis cells, with a particularly favorable relationship between manufacturing effort on the one hand and space requirements and robustness of the end product, i.e. the electrochemical cell , on the other hand, is aimed for.
  • bipolar plate with the features of claim 1.
  • the bipolar plate is particularly suitable for use in an electrochemical cell, in particular an electrolyzer, according to claim 9.
  • the object is achieved by a method for producing a bipolar plate according to claim 10.
  • the embodiments and advantages of the invention explained below in connection with the manufacturing method apply accordingly also for the devices, i.e. the bipolar plate and the electrochemical cell, here in particular an electrolyzer, and vice versa.
  • the bipolar plate comprises a metallic base body and a perforated, open-pored 3D printing structure located on its surface, the porosity of which in different volume areas depends on the distance of the respective volume area from the surface of the base body.
  • a gradient of porosity which can also be expressed in a single or multiple step change in porosity, starting from the surface of the base body in the normal direction of this surface.
  • the porosity decreases with increasing distance from the base body and the pore diameters become smaller.
  • the 3D printing structure comprises a first layer bordering the base body, which is designed as a coarse-pored stilt structure, i.e. column structure, comprising stilts arranged at a distance from one another on the base body.
  • a second layer which can also be attributed to the 3D printing structure, which is designed as a lattice structure and has finer porosity and thinner compared to the first layer.
  • the second layer is continuous parallel to the surface of the base body and covers the stilts.
  • a distance between two stilts of the first layer is chosen in the range of 120pm ⁇ 20pm. Furthermore, it has proven to be advantageous if the lattice structure of the second layer has openings with an opening length and/or an opening width of ⁇ 80 pm.
  • the 3D printed structure acts as a transport control layer within an electrochemical cell.
  • the first layer of the 3D printing structure is materially connected to both the base body and the second, denser layer, which results in a very stable structure of the entire bipolar plate, which by definition includes the transport control layer in the present case.
  • the bipolar plate In the normal direction of the three mutually parallel layers, i.e. the layer present as the base body and the two layers of the 3D printed structure, the bipolar plate is practically incompressible. This also applies to cases in which 3D printed structures of the type described are located on both sides of the base body, i.e. there are a total of five layers.
  • the mutually parallel stilts of the first layer or of the two similar layers of the first type can have a targeted elastic compliance with respect to bending loads acting on the stilts, so that forces acting in the planes in which the different layers lie result in slight displacements between the flat base body and the at least one external, grid-shaped structured second layer, that is to say layer of the second type.
  • the entire bipolar plate can be given a defined elastic flexibility under defined stresses, in this case shear stresses.
  • the fine-pored, grid-like outer second layer i.e. cover layer, is suitable for uniform, large-area force introduction into the bipolar plate.
  • the process for producing the bipolar plate is generally based on the production of a flat base body made of sheet metal, that is to say the bipolar plate in the narrower sense.
  • a multilayer 3D printing structure is then built up on the base body, in particular by selective laser beam melting, with a first layer, which is generated directly on the surface of the base body, being produced in the form of a coarse-pored stilt structure comprising stilts arranged at a distance from one another on the base body and a second layer, which is generated on the first layer, is generated in the form of a relatively fine-pored lattice structure, which is thinner compared to the first layer, which is provided continuously parallel to the surface of the base body and covering the stilts.
  • Titanium is particularly suitable as a material for producing the base body.
  • the transport control layers which are available as 3D printed layers, can have titanium as the main component.
  • various main components of the base body on the one hand and the transport control layers on the other hand can be provided.
  • the integral production of the bipolar plate and at least one transport control layer reduces both the manufacturing and testing effort compared to conventional manufacturing concepts.
  • the one-piece design of the bipolar plate including the transport control layer also minimizes electrical resistance and thus increases efficiency.
  • the cavity volume in the first layer of the 3D printing structure is more than 50% of the total volume of the same layer, that is, the layer designed as a stilt structure.
  • the first layer primarily with regard to low-resistance flowability.
  • the stilt structure can be formed by leaf-shaped or blade-shaped stilts, whereby, according to various possible design variants, for example, the length of a cut surface of the stilt to be measured in a cutting plane parallel to the surface of the base body in the flow direction of the operating medium is at least twice and at most five times the length orthogonal thereto
  • the thickness of the leaf-shaped or blade-shaped stilt to be measured in the same cutting plane is.
  • the height of the stilt given as the distance between the surface of the flat base body and the continuous second layer can, for example, be twice the length of the stilt to be measured in the mentioned cutting plane or more.
  • the second, outer layer of the 3D printing structure is not only finer-pored, but also denser than the first layer adjacent to the base body.
  • the void volume is less than 25% of the total volume of this layer.
  • the smaller thickness of the second layer can be at least partially compensated for by its higher density.
  • configurations can be realized in which the second layer has the same mass or a higher mass than the first layer.
  • the lattice structure of the second layer is, for example, in the form of openings arranged in a regular pattern, in particular with a rectangular cross section.
  • the thickness of the second layer is, for example, at least 5% and at most 30% of the thickness of the first layer.
  • the entire 3D layer structure provided by the two layers has, for example, a thickness which does not deviate upwards or downwards from the thickness of the base body by more than 50%.
  • the free surface of the second layer facing away from the base body is reworked, with smoothing and leveling of surface roughness that occurs as a result of the process in a 3D printing process. It has proven useful if the free surface of the second layer is smoothed by rolling and/or rolling and/or grinding and/or honing and/or eroding and/or chemical removal.
  • the smoothing of the free surface of the second layer reduces the risk of damage to a membrane electrode assembly (MEA) attached to it in an electrochemical cell.
  • MEA membrane electrode assembly
  • the bipolar plate is aligned and/or heat treated.
  • the straightening in particular straightening rolling, is intended to improve the flatness of the bipolar plate and the heat treatment is intended to reduce existing internal stresses in the component, which could lead to the bipolar plate warping during use.
  • An electrochemical cell in particular an electrolyzer for producing hydrogen, comprises at least one bipolar plate according to the invention.
  • electrochemically Mix cell can also be a fuel cell or a redox flow cell.
  • the basic structure of such cells is known from WO 2022 127 976 A1.
  • Bipolar plates can also be used, the base bodies of which are assembled from two half-sheets and which form a cavity between the half-sheets for the passage of a fluid, in particular a coolant. At least one of the surfaces facing away from the cavity then has the 3D printed structure.
  • FIG. 2 shows a detail of the arrangement according to FIG. 1 in a schematic sectional view from the base body in the direction of the second layer
  • FIG. 3 shows a stilt structure of the arrangement according to FIG. 1 in a top view
  • FIG. 5 shows a fine-pored second layer with a lattice structure of the arrangement according to FIG. 1.
  • a bipolar plate 1, shown incompletely in the figures, is intended for use in an electrochemical cell, here an electrolyzer 10 for producing hydrogen.
  • the bipolar plate 1 shown in detail according to FIG. 1 is shown in a three-dimensional view and separates a half cell of a first electrochemical cell, here an electrolysis cell, from a half cell of a second electrochemical cell.
  • a plate-shaped base body 2 of the bipolar plate 1 is made of titanium in the present case.
  • the base body 2 is also referred to as a bipolar plate in the narrower sense.
  • iron-based or nickel-based materials come into consideration for producing the base body 2 and/or the porous layer structure 3.
  • a porous layer structure 3 of the same type is also located on the underside of the base body 2.
  • top and bottom refer exclusively to the orientation of the bipolar plate 1 that can be seen in the figures.
  • bipolar plates 1 of the type shown can be in a vertical installation position in a cell stack, which is the main component of an electrochemical cell, here the electrolyzer 10 , forms, is located.
  • the bipolar plate 1 including the porous layer structure 3 is also referred to as a bipolar plate in the broader sense.
  • the porous layer structure 3 functions as a porous transport layer (PTL) within the completed electrolyzer 10 and is produced additively, that is, by 3D printing.
  • PTL porous transport layer
  • powdery or pasty precursors can be used to generate the layer structure 3.
  • powdered starting materials are used to build the 3D printing structure 3 directly on the base body 2, that is, the titanium sheet.
  • the 3D printing structure 3 is composed of a first layer 4, which is built directly on the base body 2 and is cohesively connected to it, and a second, comparatively fine-pored continuous layer 5, which borders directly on the first layer 4 and is cohesively connected to it and forms the outer surface of the bipolar plate 1, which also serves as a fluid conduit. Both layers 4, 5 are open-pored and have a geometrically defined shape.
  • the thickness of the first layer 4 is designated Ü4
  • the thickness of the second layer 5 is designated Ds.
  • the sum of the thickness Ü4 and the thickness Ds results in the thickness Ds of the entire 3D printing structure 3.
  • D2 denotes the thickness of the base body 2.
  • the coarse-pored shape of the first layer 4 is given by a large number of individual, spaced apart and mutually parallel stilts 6, which overall represent a stilt structure 7. Each stilt 6 extends over the full height Ü4 of layer 4.
  • Each stilt 6 has the shape of a narrow, elongated cuboid that is rounded on its longitudinal edges, which means that the stilt 6 has an approximate blade shape.
  • the stilt 6 In cross section ( Figure 3), the stilt 6 has a length Le and a width Be.
  • the stilts 6 are arranged in the manner of aerodynamically positioned strips, between which an operating medium of the electrolyzer 10 can flow.
  • the length Le must be measured in the flow direction ST of the operating medium.
  • the division of the stilt structure 7 given in the flow direction ST is T? specified and is more than 1.1 times, but less than twice the length Le.
  • transverse division TQ? Across the direction of flow ST is a transverse division TQ? given to the stilt structure 7.
  • the transverse division TQ? corresponds to more than 1.5 times but less than twice the width Be.
  • the continuous second layer 5 has a lattice structure 8, which is formed by openings 9 arranged in a regular pattern, each with a square cross section.
  • the second layer 4 is continuous parallel to the surface of the base body 2 and covers the stilts 6.
  • the pitch of the grid structure 8 is both in the flow direction ST and in the transverse direction Ts. This is more than twice that indicated by Bg. ben edge length of the openings 9.
  • the lattice structure 8 is significantly finer-pored than the stilt structure 7.
  • the cavities present in the form of the openings 9 in the case of the lattice structure 8 take up significantly less than half of the total volume of the lattice structure 8 a.
  • the free surface of the second layer 5, which faces away from the base body 2 can be smoothed, for example by grinding or rolling. But other smoothing processes can also be used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Composite Materials (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

Une plaque bipolaire (1), en particulier destinée à une cellule électrochimique sous la forme d'un électrolyseur (10), comprend un corps de base métallique (2) et une structure d'impression 3D perforée (3) située sur sa surface, dont la porosité dépend de la distance par rapport à la surface du corps de base (2). Une première couche (4) de la structure d'impression 3D (3) adjacente au corps de base (2) se présente sous la forme d'une structure de pilotis à pores grossiers (7) comprenant des pilotis (6) disposés à distance les uns des autres sur le corps de base (2), une seconde couche (5) de la structure d'impression 3D (3) située sur la première couche (4) étant constituée d'une structure en treillis à pores fins (8) qui est plus fine que la première couche (4) et est disposée parallèlement à la surface du corps de base (2) de manière continue et recouvrant les pilotis (6).
PCT/DE2023/100422 2022-08-26 2023-06-05 Plaque bipolaire, électrolyseur et procédé de fabrication de plaque bipolaire Ceased WO2024041685A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022121615.2 2022-08-26
DE102022121615.2A DE102022121615A1 (de) 2022-08-26 2022-08-26 Bipolarplatte, Elektrolyseur und Verfahren zur Herstellung einer Bipolarplatte

Publications (1)

Publication Number Publication Date
WO2024041685A1 true WO2024041685A1 (fr) 2024-02-29

Family

ID=86851388

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2023/100422 Ceased WO2024041685A1 (fr) 2022-08-26 2023-06-05 Plaque bipolaire, électrolyseur et procédé de fabrication de plaque bipolaire

Country Status (2)

Country Link
DE (1) DE102022121615A1 (fr)
WO (1) WO2024041685A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025223598A1 (fr) 2024-04-22 2025-10-30 Schaeffler Technologies AG & Co. KG Ensemble composé d'une membrane électrolytique polymère rainurée et d'une plaque bipolaire pour un système électrochimique, et procédé de fabrication de l'ensemble plaque

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024202286A1 (de) 2024-03-12 2025-09-18 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer elektrochemischen Zelle, elektrochemische Zelle
DE102024112692A1 (de) * 2024-05-06 2025-11-06 Schaeffler Technologies AG & Co. KG Plattenanordnung, Elektrolyseur und Verfahren zur Herstellung einer Plattenanordnung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081160A1 (fr) 2015-11-10 2017-05-18 Stichting Energieonderzoek Centrum Nederland Fabrication additive d'objets métalliques
DE102017107422A1 (de) * 2016-04-06 2017-10-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zur Herstellung einer Bipolarplatte-Stromkollektor-Einheit, Bipolarplatte-Stromkollektor-Einheit und deren Verwendung
DE102016213057A1 (de) 2016-07-18 2018-01-18 Robert Bosch Gmbh Verfahren zur Herstellung einer Bipolarplatte für eine Brennstoffzelle und Brennstoffzelle
US20190372133A1 (en) * 2016-12-22 2019-12-05 Robert Bosch Gmbh Flow field plate for a fuel cell, and fuel cell
US20210164109A1 (en) * 2018-07-27 2021-06-03 Hoeller Electrolyzer Gmbh Method for producing a porous transport layer for an electrochemical cell
WO2021138465A1 (fr) 2019-12-31 2021-07-08 The Regents Of The University Of California Procédé de fabrication additive au laser pour la production de couches poreuses
DE102020203398A1 (de) 2020-03-17 2021-09-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur additiven Herstellung eines Metallträgers einer Brennstoffzelle
DE102020109430A1 (de) * 2020-04-03 2021-10-07 Forschungszentrum Jülich GmbH Bipolarplattenanordnung, Verwendung einer Bipolarplattenanordnung und Elektrolyse- oder Brennstoffzellenstapel mit einer Vielzahl von Bipolarplattenanordnungen
WO2022127976A1 (fr) 2020-12-16 2022-06-23 Schaeffler Technologies AG & Co. KG Couche, système de couche, plaque électroconductrice et cellule électrochimique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102071905B1 (ko) * 2016-10-13 2020-01-31 주식회사 엘지화학 분리판, 이의 제조방법 및 이를 포함하는 연료전지 스택

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081160A1 (fr) 2015-11-10 2017-05-18 Stichting Energieonderzoek Centrum Nederland Fabrication additive d'objets métalliques
DE102017107422A1 (de) * 2016-04-06 2017-10-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zur Herstellung einer Bipolarplatte-Stromkollektor-Einheit, Bipolarplatte-Stromkollektor-Einheit und deren Verwendung
DE102016213057A1 (de) 2016-07-18 2018-01-18 Robert Bosch Gmbh Verfahren zur Herstellung einer Bipolarplatte für eine Brennstoffzelle und Brennstoffzelle
US20190372133A1 (en) * 2016-12-22 2019-12-05 Robert Bosch Gmbh Flow field plate for a fuel cell, and fuel cell
US20210164109A1 (en) * 2018-07-27 2021-06-03 Hoeller Electrolyzer Gmbh Method for producing a porous transport layer for an electrochemical cell
WO2021138465A1 (fr) 2019-12-31 2021-07-08 The Regents Of The University Of California Procédé de fabrication additive au laser pour la production de couches poreuses
DE102020203398A1 (de) 2020-03-17 2021-09-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur additiven Herstellung eines Metallträgers einer Brennstoffzelle
DE102020109430A1 (de) * 2020-04-03 2021-10-07 Forschungszentrum Jülich GmbH Bipolarplattenanordnung, Verwendung einer Bipolarplattenanordnung und Elektrolyse- oder Brennstoffzellenstapel mit einer Vielzahl von Bipolarplattenanordnungen
WO2022127976A1 (fr) 2020-12-16 2022-06-23 Schaeffler Technologies AG & Co. KG Couche, système de couche, plaque électroconductrice et cellule électrochimique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025223598A1 (fr) 2024-04-22 2025-10-30 Schaeffler Technologies AG & Co. KG Ensemble composé d'une membrane électrolytique polymère rainurée et d'une plaque bipolaire pour un système électrochimique, et procédé de fabrication de l'ensemble plaque

Also Published As

Publication number Publication date
DE102022121615A1 (de) 2024-02-29

Similar Documents

Publication Publication Date Title
WO2024041685A1 (fr) Plaque bipolaire, électrolyseur et procédé de fabrication de plaque bipolaire
WO2018108962A1 (fr) Procédé de fabrication d'une plaque d'écoulement pour une pile à combustible
DE60225995T2 (de) Strippingsfolie, Verfahren zur Herstellung einer Strippingsfolie und Vorrichtung zur Herstellung einer Strippingsfolie
DE102015105568A1 (de) Additive Fertigung für Brennstoffzellenströmungsfelder
DE4142001A1 (de) Verfahren zum herstellen gestufter formeinsaetze, gestufte formeinsaetze und damit abgeformte mikrostrukturkoerper
DE102010001005A1 (de) Verfahren zur Herstellung einer SOFC Brennstoffzelle
EP3230492B1 (fr) Procédé de projection de gaz froid à l'aide d'un masque
EP3170648B1 (fr) Procédé de fabrication additive et procédé de commande d'un dispositif de fabrication additive d'un composant tridimensionnel
EP3277481B1 (fr) Procédé et dispositif de fabrication additive d'un corps
DE102021121404A1 (de) Bipolarplatte und Verfahren zur Herstellung einer Bipolarplatte
WO2013167643A2 (fr) Procédé de mise en contact electrique d'un module électronique sous forme d'empilement et module électronique a structure de contact
DE10256922A1 (de) Metallischer Separator einer Brenstoffzelle und Verfahren zu dessen Herstellung
WO2014173751A1 (fr) Procédé permettant de fabriquer une plaque bipolaire ainsi qu'une structure en couches, plaque bipolaire et structure en couches
DE102022129159B3 (de) Bipolarplatte, Zellenstapel und Verfahren zur Herstellung einer Bipolarplatte
DE102021132658A1 (de) Bipolarplatte und Verfahren zum Prägen einer Kanalstruktur
DE102022104124B3 (de) Elektrode einer elektrochemischen Zelle und Verfahren zur Herstellung einer Elektrode
WO2011144392A1 (fr) Procédé de fabrication d'un cristal photonique et cristal photonique tridimensionnel
DE102017205903B4 (de) Verfahren und Vorrichtung zur Herstellung eines Bauteils aus mindestens zwei unterschiedlichen Materialien durch Drucken im Pulverbettverfahren
WO2020094697A1 (fr) Matériau d'électrode et électrode servant à la répartition du combustible dans une pile à combustible
WO2019185416A1 (fr) Structure de répartiteur de gaz pour une pile à combustible
DE102010013348A1 (de) Technik zur Herstellung von Druckschablonen
WO2019063140A1 (fr) Moule de traitement de particules de matière plastique expansibles et/ou pré-expansées
WO2008040625A1 (fr) Procédé et dispositif pour produire des empilements céramiques à section transversale polygonale
DE102024202286A1 (de) Verfahren zur Herstellung einer elektrochemischen Zelle, elektrochemische Zelle
DE102022116031A1 (de) Verfahren zur Herstellung eines Blechteils und Blechteil

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: 23731507

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 23731507

Country of ref document: EP

Kind code of ref document: A1