WO2019175200A1 - Structure distributrice de gaz pour pile à combustible - Google Patents

Structure distributrice de gaz pour pile à combustible Download PDF

Info

Publication number
WO2019175200A1
WO2019175200A1 PCT/EP2019/056202 EP2019056202W WO2019175200A1 WO 2019175200 A1 WO2019175200 A1 WO 2019175200A1 EP 2019056202 W EP2019056202 W EP 2019056202W WO 2019175200 A1 WO2019175200 A1 WO 2019175200A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
fuel cell
distributor structure
reactant
gas distributor
Prior art date
Application number
PCT/EP2019/056202
Other languages
German (de)
English (en)
Inventor
Martin Schoepf
Arne Stephen FISCHER
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 WO2019175200A1 publication Critical patent/WO2019175200A1/fr

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
    • H01M8/0241—Composites
    • H01M8/0245—Composites in the form of layered or coated products
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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
    • 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
    • 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
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • 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 invention relates to a gas distributor structure for a fuel cell, in particular a PEM fuel cell, or for an electrolyzer, which serves to provide a reactant to the fuel cell, according to the independent device claim. Furthermore, the invention relates to a
  • Fuel cell with at least one corresponding gas distributor structure according to the independent device claim.
  • Fuel cells are electrochemical energy converters. In fuel cells, hydrogen H2 and oxygen 02 are converted into water H20, electrical energy and heat for energy. Fuel cells essentially comprise five components (see Figure 1 or la prior art). In the middle there is a proton-conductive membrane 103, for example a polymer membrane. The membrane 103 is embedded between two gas diffusion layers GDL of microporous graphite paper or graphite fabric, wherein either the membrane 103 or the gas diffusion layers GDL to the
  • the gas diffusion layers GDL are in turn arranged between two bipolar plates 101, 102.
  • a stack or repeating unit of this construction forms a (fuel cell) stack.
  • the bipolar plates 101, 102 take over the coarse distribution of the operating media (air or oxygen 02 on the cathode side K and hydrogen H2 on the anode side A and cooling water H20).
  • the microporous gas diffusion layers GDL take over the fine distribution over the active surface and the supply of the reaction gases of the active surface of the membrane 103 and the removal of product water H20 from the membrane 103 into the coarse structure of the bipolar plates 101, 102.
  • an exemplary bipolar plate 101 (and 102) of the prior art is made by embossing a channel structure into a sheet about 0.1 mm thick (see below in the figure la).
  • the problem here is the accumulation of water in the gas diffusion layers GDL under the webs of the bipolar plate 101 on the cathode side K of the fuel cell 100 *.
  • FIG. 1b Another exemplary coarse gas distributor structure of the prior art is shown in Figure 1b, which is made of an open-pore, electrically conductive foam S (e.g., metal, e.g., stainless steel, or graphite).
  • S electrically conductive foam
  • foam structures S as gas distribution structures has u compared to embossed sheets. a. the advantage that the edition on the
  • Gas diffusion layer GDL in the case of a foam can be uniform or homogeneous, since the individual contact points are finer. In this way, the risk of product water accumulation in the gas diffusion layer GDL decreases, which can lead to the blockage of parts of the membrane 103.
  • the problem with the foam structures S is the provision of the process gases in sufficient quantity or the provision of a sufficient process gas flow.
  • the invention provides a gas distributor structure for a fuel cell
  • the present invention provides a gas distributor structure for a fuel cell, in particular a PEM fuel cell, or an electrolyzer, which serves for providing a reactant to the fuel cell, comprising a first region with a first, in particular coarse, distributor structure and with a second downstream distributor structure Distributing the reactant in the fuel cell, wherein the first region of a bipolar plate of the fuel cell, which may now be formed in the form of a thin plate, adjacent, and a second region having a third, in particular fine or subordinate arranged distribution structure for uniform distribution the reactant over a membrane electrode assembly of the fuel cell, wherein the second region is adjacent to the membrane electrode assembly, and wherein the first region is formed by a foam structure and the second region by a gas diffusion layer.
  • the gas distributor structure according to the invention may preferably be located on the
  • Cathode side of the fuel cell may be provided to prevent accumulation of water on the membrane and to allow the distribution of the reactant with low pressure drops and low cost in the design and operation of a compressor.
  • the gas distributor structure according to the invention may be provided on both sides, the cathode side and the anode side, of the fuel cell in order to favor the gas flow on both sides of the fuel cell.
  • a membrane electrode unit can be understood in the context of the invention, a membrane which can be coated with a catalyst material for the electrochemical reaction, for example. Platinum.
  • a foam structure ie, an open-pore foam layer
  • a foam structure has the advantage of a much finer and more uniform support on the gas diffusion layer than conventional embossed sheets.
  • a foam structure has the disadvantage that the flow resistance for the gas flow tends to be relatively high. To both, a homogeneous edition on the gas diffusion layer and a low flow resistance, too
  • the invention proposes to ensure that the side of the foam structure facing away from the gas diffusion layer, e.g. Using Multi Wire Electrical Discharge Machining (MWEDM) to provide a first, in particular coarse, distribution structure for the gas flow.
  • MWDEDM Multi Wire Electrical Discharge Machining
  • An idea of the invention lies in the fact that the first region for roughly distributing the reactant in the fuel cell is formed by a foam structure.
  • the foam structure according to the invention again has two distributor structures of different sizes. The first
  • Distributor structure on the foam structure serves the coarse distribution of
  • This first or coarse distribution structure is ensured by the outer shape, for example. With relatively coarse grooves, the foam structure at the boundary to the flat bipolar plate.
  • the second distribution structure which is subordinate to the first distribution structure, is by the inner
  • composition of the foam structure so through the open pores of the foam.
  • This second distribution structure now distributes the reactant more uniformly over the gas diffusion layer (or the second region) and simultaneously has many small and finely distributed contact points on the
  • the first area has for this purpose a flat bottom at the border to
  • Gas diffusion layer (ie the second area) on.
  • the reactant is uniformly distributed over the active area of the membrane-electrode assembly through the second region formed by the gas diffusion layer, which has an even finer manifold structure.
  • Bipolar plate may have different shapes or characteristics.
  • the size, the distribution and the distances between the individual elements of the first distribution structure can also vary.
  • the advantages of the foam structure are combined with the advantages of a pressure loss-reduced distribution of the reactant through a coarse distribution structure.
  • the presence of a classical channel structure the risk of water retention at the
  • the foam structure is formed of a metal foam or a coated plastic foam.
  • an open-pored structure with a high porosity can be made possible.
  • a conduction of the electric current with a low electrical resistance and a good thermal conductivity can thus be ensured by the foam structure.
  • the gas diffusion layer is formed from a paper-like or fabric-like carbon material or carbon paper.
  • the internal composition of the gas diffusion layer a fine distribution of the reactants over the active area of the membrane-electrode unit can be made possible.
  • the invention may provide that the first region in the distributor plane of the reactant (or the first
  • Distribution structure has a periodic or a stochastic shape. Due to the periodic first distribution structure, the gas flow to a easy to set and forecast. Due to the stochastic first distribution structure, the gas flow can be well distributed.
  • the invention may provide that the first region has a sinusoidal shape, an angular shape, or a groove shape as viewed in cross-section with respect to a flow direction of the reactant.
  • a sinusoidal shape By means of a sinusoidal shape, a uniform transition of the reactant from the first distributor structure into the second distributor structure can be achieved and the surface area can be increased for this purpose. In addition, this can reduce the bearing surface between the gas distributor structure and the bipolar plate, whereby the accumulations of product water in the cell can be further reduced.
  • an angular shape or a groove shape the production of the first distribution structure can be simplified.
  • the first region of the gas distributor structure can be formed with two distributor structures of different sizes in a single mold.
  • the first area of the gas distributor structure to be produced from a block, wherein corresponding structural elements can be produced on the upper side of the block by ablation or targeted deformation or compression of the material of the foam structure.
  • the invention may provide for the first region in the distributor plane of the reactant to have a plurality of parallel, widthwise, or height-wise or alternately tapered, equally long or differently long grooves and / or elevations.
  • parallel grooves and / or elevations the production of the first distribution structure can be simplified.
  • tapering grooves and / or surveys the pressure drop when distributing the reactant can be selectively influenced, for example, be reduced and the conditions within the cell the various
  • the invention may provide that the second region forms a planar position parallel to the membrane electrode unit of the fuel cell.
  • the first area is formed using Electrical Discharge Machining or Multi Wire Electrical Discharge Machining.
  • a fine-pored foam structure can be provided whose pore size can be adjusted independently of the dimensions of the foam structure.
  • this allows a rapid and cost-effective production of gas distributor structures in the context of the invention.
  • first region and the second region are bonded to one another in a material-locking manner and / or by compression.
  • the invention provides a fuel cell which has at least one gas distributor structure on a cathode side and / or on an anode side, which can be designed as described above.
  • FIG. 1 a shows an exemplary fuel cell according to the prior art
  • Fig. Lb is another exemplary fuel cell according to the prior
  • Fig. 3 shows an exemplary gas distributor structure according to the invention for a
  • FIG. 1 a shows a first example of a known fuel cell 100 *, which may be designed as described above.
  • a gas distributor structure 10 * is used, the one
  • Gas diffusion layer GDL for a fine distribution and a bipolar plate 101 in the form of an embossed sheet for a coarse distribution of the reactant comprises.
  • the areas of the active surface of the membrane 103 can thereby be blocked.
  • the diffusion of the hydrogen ions H + through the diaphragm 103 can be hindered and the operation of the fuel cell 100 * can be disturbed.
  • the underlying areas of the gas diffusion layer GDL are deformed.
  • the gas flow of the reactants under the webs of the bipolar plates 101, 102 can be hindered by the water accumulation.
  • FIG. 1b shows a further example of a known fuel cell 100 **, which may be designed as described above.
  • this fuel cell 100 ** is at least on the cathode side K of the membrane 103, a gas distributor structure 10 ** used from an electrically conductive foam, which is delimited by a flat bipolar plate 101 from the anode region A.
  • the gas supply is made possible only with considerable pressure losses.
  • high demands are placed on the compressor for providing the cathode air, the high cost and
  • the present invention provides a gas distributor structure 10 for a fuel cell 100, for example a PEM fuel cell, or for an electrolyzer, which serves to supply a reactant to the fuel cell 100.
  • the gas distributor structure 10 according to the invention comprises a first region 11 with a first, in particular coarse, distributor structure S1 and with a second downstream distributor structure S2 for distributing the reactant in the fuel cell 100, wherein the first region 11 adjoins a bipolar plate 101 of the fuel cell 100 the bipolar plate 101 may now be formed in the form of a thin and flat plate.
  • the gas distributor structure 10 comprises a second region 12 with a third, in particular fine or the first distribution structure S1 and the second distribution structure S2 subordinate distribution structure S3 for uniformly distributing the reactant over a membrane electrode unit 103 of the fuel cell 100, wherein the second region 12 adjoins the membrane electrode unit 103.
  • the first region 11 is formed by a foam structure S and the second region 12 by a gas diffusion layer GDL. Between the first region 11 and the second region 12, a transition in the form of a planar layer (part of region 11) is provided.
  • the second region 12 forms a likewise planar position at the transition to the membrane electrode unit 103.
  • the shape of the upper side of the foam structure S is the first or coarse
  • Distributor structure S1 formed in the order of 0.1 mm to 1.5 mm. Meant here are the dimensions of the individual structural elements of the first distribution structure Sl. The height of the grooves of S1 may be 0.05 mm to 0.5 mm. It is particularly advantageous that all of these variables are decoupled from the pore size of the foam structure S.
  • the gas distributor structure 10 according to the invention may preferably be advantageous on the cathode side K of the fuel cell 100 in order to avoid accumulations of water on the membrane electrode unit 103 and to allow the distribution of the reactant with low pressure losses.
  • Anodenseite A of the fuel cell 100 may be advantageous to favor the gas flow of the reactants on both sides A, K of the fuel cell 100.
  • the membrane electrode unit 103 in the context of the invention can be formed by a membrane 103 with a catalyst layer for triggering and promoting the electrochemical reaction, for example of platinum.
  • the foam structure S in the context of the invention forms the first region 11 of the gas distributor structure 10 according to the invention at the transition to the gas diffusion layer GDL, ie the second region 12 in the context of the invention, the foam structure S forms in particular compared to conventional embossed sheets the advantage of a lot finer and more even edition.
  • the foam structure of the invention S at the transition to the bipolar plate 101 a coarse distribution structure Sl, so that the flow resistance for the gas flow is reduced in an advantageous manner.
  • the foam structure S according to the invention is shown in FIG.
  • the gas distributor structure 10 offers both a homogeneous support on the gas diffusion layer GDL and a small one Flow resistance during insertion of the reactant into the fuel cell 100.
  • the first distribution structure S1 on the side facing away from the gas diffusion layer GDL side of the foam structure S can advantageously by means of an Electrical Discharge Machining (EDM) or a Multi Wire Electrical Discharge
  • MWEDM Machining
  • the foam structure S thus has two distributor structures of different sizes (S1 and S2).
  • the first distributor structure S1 serves for the coarse distribution of the reactant in the fuel cell 100.
  • the second distributor structure S2 serves for the coarse distribution of the reactant in the fuel cell 100.
  • Distributor structure S2 which is subordinate to the first distributor structure S1, is provided by the internal composition of the foam structure S, ie by the open pores of the foam structure S. Finally, the second region 12 with the finest third distributor structure S3 serves a uniform distribution of the reactant over the active Surface of the membrane electrode unit 103.
  • the gas diffusion layer GDL can be characterized by a finely porous, fibrous or
  • the first distribution structure S1 for resting on the bipolar plate 101 may have different shapes or expressions, as it is in
  • the forms mentioned are to be considered as exemplary embodiments only and may be different.
  • Distributor level x, y of the reactant have multiple parallel, tapered or alternately tapered, equal length or different lengths grooves R and / or elevations E as structural elements. It is obvious that the grooves R and / or elevations E do not need to be formed over the entire length of the gas flow, since the transition from the first distributor structure S1 into the second distributor structure S2 takes place through the pores of the foam structure S.
  • a gas distributor structure 10 can be provided which forms a uniform support on the gas diffusion layer GDL and which allows a low flow resistance in the distribution of the reactant in the fuel cell 100.
  • FIGS. 2 to 5 describes the present invention purely by way of example.
  • individual features of the embodiments, insofar as it is technically feasible, can be freely combined with one another without departing from the scope of the invention.

Landscapes

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

Abstract

L'invention concerne une structure distributrice de gaz (10) pour une pile à combustible (100), servant à fournir un réactif à la pile à combustible (100), comprenant : une première zone (11) dotée d'une première structure distributrice (S1) et d'une deuxième structure distributrice (S2) subordonnée pour la distribution du réactif dans la pile à combustible (100), la première zone (11) étant adjacente à une plaque bipolaire (101) de la pile à combustible (100), et une seconde zone (12) dotée d'une troisième structure distributrice (S3) subordonnée pour la distribution régulière du réactif par le biais d'une unité membrane-électrodes (103) de la pile à combustible (100), la seconde zone (12) étant adjacente à l'unité membrane-électrodes (103), et la première zone (11) étant formée par une structure en mousse (S) et la seconde zone (12), par une couche de diffusion de gaz (GDL).
PCT/EP2019/056202 2018-03-14 2019-03-13 Structure distributrice de gaz pour pile à combustible WO2019175200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018203828.7 2018-03-14
DE102018203828.7A DE102018203828A1 (de) 2018-03-14 2018-03-14 Gasverteilerstruktur für eine Brennstoffzelle

Publications (1)

Publication Number Publication Date
WO2019175200A1 true WO2019175200A1 (fr) 2019-09-19

Family

ID=65911117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/056202 WO2019175200A1 (fr) 2018-03-14 2019-03-13 Structure distributrice de gaz pour pile à combustible

Country Status (2)

Country Link
DE (1) DE102018203828A1 (fr)
WO (1) WO2019175200A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110828842A (zh) * 2019-11-14 2020-02-21 上海电气集团股份有限公司 一种新型质子交换膜燃料电池双极板分配头

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020201312A1 (de) 2020-02-04 2021-08-05 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffzellenstapel
DE102020203003A1 (de) 2020-03-10 2021-09-16 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zur Herstellung von Metallschaummatten
DE102020111436A1 (de) * 2020-04-27 2021-10-28 Oberland Mangold Gmbh Gas-Diffusions-Layer sowie Elektrolyseur oder Brennstoffzelle mit einem solchen Gas-Diffusions-Layer
DE102021212382A1 (de) 2021-11-03 2023-05-04 Robert Bosch Gesellschaft mit beschränkter Haftung Diffusionslage für eine elektrochemische Zelle, elektrochemische Zelle und Verfahren zum Herstellen einer Diffusionslage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062033A1 (de) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Brennstoffzelle, Strömungsfeldplatte und Verfahren zur Herstellung einer Strömungsfeldplatte
US20100040926A1 (en) * 2008-06-23 2010-02-18 Nuvera Fuel Cells, Inc. Consolidated fuel cell electrode
US20120028154A1 (en) * 2010-07-27 2012-02-02 Gm Global Technology Operations, Inc. Fuel cell having improved thermal characteristics
US20150376800A1 (en) * 2014-06-27 2015-12-31 Nuvera Fuel Cells, Inc. Flow fields for use with an electrochemical cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062033A1 (de) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Brennstoffzelle, Strömungsfeldplatte und Verfahren zur Herstellung einer Strömungsfeldplatte
US20100040926A1 (en) * 2008-06-23 2010-02-18 Nuvera Fuel Cells, Inc. Consolidated fuel cell electrode
US20120028154A1 (en) * 2010-07-27 2012-02-02 Gm Global Technology Operations, Inc. Fuel cell having improved thermal characteristics
US20150376800A1 (en) * 2014-06-27 2015-12-31 Nuvera Fuel Cells, Inc. Flow fields for use with an electrochemical cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110828842A (zh) * 2019-11-14 2020-02-21 上海电气集团股份有限公司 一种新型质子交换膜燃料电池双极板分配头
CN110828842B (zh) * 2019-11-14 2022-08-19 上海电气集团股份有限公司 一种质子交换膜燃料电池双极板分配头

Also Published As

Publication number Publication date
DE102018203828A1 (de) 2019-09-19

Similar Documents

Publication Publication Date Title
WO2019175200A1 (fr) Structure distributrice de gaz pour pile à combustible
DE60212001T2 (de) Flüssigkeitsverteilungsplatte-geometrien
DE112007002797B4 (de) Brennstoffzelle mit kanalbildenden elementen
DE102008013439A1 (de) Gabelung von Strömungskanälen in Strömungsfeldern von Bipolarplatten
DE102007012718A1 (de) Acrylfasergebundenes Kohlefaserpapier als Gasdiffusionsmedium für eine Brennstoffzelle
EP3884535B1 (fr) Plaque de pile à combustible, plaque bipolaire et système de pile à combustible
WO2017013201A1 (fr) Pile à combustible et empilement de cellules élémentaires
WO2019020284A1 (fr) Structure distributrice pour la fourniture d'au moins un gaz réactif
WO2019175199A1 (fr) Structure de distribution de gaz destinée à une pile à combustible
DE102018214645A1 (de) Gasverteilerstruktur für ein Brennstoffzellensystem
WO2019185350A1 (fr) Structure de répartiteur de gaz pour une pile à combustible
DE112004001525T5 (de) Diffusionsmedium zur Verwendung in einer PEM-Brennstoffzelle
WO2015144269A1 (fr) Plaque bipolaire et pile à combustible équipée de cette plaque
EP2025026B1 (fr) Pile a combustible munie d'un ensemble de plaques separatrices et ensemble de plaques separatrices
WO2017102620A1 (fr) Utilisation de non-tissés conducteurs et très poreux comme plaque bipolaire dans des cellules de combustible pem
EP1981108B1 (fr) Agencement d'interconnecteur et procédé de fabrication d'un agencement de contact pour un empilement de piles à combustible
DE102008033209A1 (de) Brennstoffzellenanordnung
DE10233982B4 (de) Bipolare Platte für eine Brennstoffzelle und Brennstoffzellenstapel
WO2019185416A1 (fr) Structure de répartiteur de gaz pour une pile à combustible
DE102019210637A1 (de) Gasdiffusionslage, Brennstoffzelle mit Gasdiffusionslage sowie Brennstoffzellenstack mit Brennstoffzelle
WO2019170652A1 (fr) Structure de répartiteur de gaz pour une pile à combustible
DE102019206117A1 (de) Brennstoffzellenstapel umfassend variable Biopolarplatten
DE102013203311A1 (de) Brennstoffzellensystem
DE102021214824A1 (de) Medienverteilerstruktur, Bipolarplatte und elektrochemische Zelle
DE102019211819A1 (de) Halbzeug, Bipolarplatte mit Halbzeug, Brennstoffzelle mit Bipolarplatte sowie Verfahren zum Herstellen eines Halbzeuges

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: 19713373

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: 19713373

Country of ref document: EP

Kind code of ref document: A1