FR2888047A1 - Bipolar plate for ion exchange membrane fuel cell, has two layers made of porous electricity conducting material, separated by polymer sealing membrane, where layers are electrically connected by conducting fibers traversing membrane - Google Patents

Bipolar plate for ion exchange membrane fuel cell, has two layers made of porous electricity conducting material, separated by polymer sealing membrane, where layers are electrically connected by conducting fibers traversing membrane Download PDF

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Publication number
FR2888047A1
FR2888047A1 FR0506668A FR0506668A FR2888047A1 FR 2888047 A1 FR2888047 A1 FR 2888047A1 FR 0506668 A FR0506668 A FR 0506668A FR 0506668 A FR0506668 A FR 0506668A FR 2888047 A1 FR2888047 A1 FR 2888047A1
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FR
France
Prior art keywords
membrane
layers
bipolar plate
fuel cell
ion exchange
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.)
Pending
Application number
FR0506668A
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French (fr)
Inventor
Nicholas Lee
Francis Roy
Crouvezier Jean Philipp Poirot
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.)
PSA Automobiles SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Peugeot Citroen Automobiles SA
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 Commissariat a lEnergie Atomique CEA, Peugeot Citroen Automobiles SA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR0506668A priority Critical patent/FR2888047A1/en
Publication of FR2888047A1 publication Critical patent/FR2888047A1/en
Pending 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
    • H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
    • 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
    • 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
    • H01M8/0256—Vias, i.e. connectors passing through the separator 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
    • 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
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported 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
    • H01M8/10—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
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0228—Composites in the form of layered or coated products
    • 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

Abstract

The plate (1) has two layers (10, 11) made of porous electricity conducting material, separated by a polymer sealing membrane (12), where the plate is separated from another bipolar plate by an electrode membrane (2). The layers are electrically connected by conducting fibers (13) traversing the sealing membrane. The layers are shaped to form coolant circulation channels. An independent claim is also included for an ion exchange membrane fuel cell comprising an alternate stacking of electrode membrane and bipolar plate.

Description

La présente invention est relative à une plaque bipolaire pour pile àThe present invention relates to a bipolar plate for battery

combustible de type à membrane échangeuse de protons.  proton exchange membrane type fuel.

On connaît des piles à combustible de type à membrane échangeuse de protons constituées d'un empilement alterné de membranes électrodes et de plaques bipolaires, les plaques bipolaires étant destinées à véhiculer des gaz actifs et des fluides de refroidissement, et à les répartir à la surface des assemblages membranes électrodes, de façon à engendrer des réactions électrochimiques à travers la membrane électrode pour engendrer des cou- rants électriques.  Proton exchange membrane-type fuel cells are known consisting of an alternating stack of electrode membranes and bipolar plates, the bipolar plates being intended to convey active gases and cooling fluids, and to distribute them on the surface. electrode membrane assemblies, so as to generate electrochemical reactions through the electrode membrane to generate electrical currents.

Dans ces empilements, les plaques bipolaires sont en général des plaques rigides soit constituées de matériaux conducteurs rigides comme le graphite usiné pour former des canaux pour la circulation des gaz, soit formées de plaques métalliques mises en forme par emboutissage de façon à former également des canaux pour la circulation des gaz.  In these stacks, the bipolar plates are generally rigid plates made of rigid conductive materials such as graphite machined to form channels for the circulation of gases, or formed of metal plates shaped by stamping so as to form also channels for the circulation of gases.

Ces plaques bipolaires présentent l'inconvénient notamment d'être rigides, ce qui peut poser des problèmes pour assurer une bonne étanchéité des différents contacts qu'il peut y avoir entre les plaques bipolaires d'un empilage important. Ces plaques bipolaires présentent également l'inconvénient d'avoir des problèmes de corrosion, qui conduisent à l'empoisonnement de sites catalytiques. Les plaques bipolaires en matériau métallique ont en outre l'inconvénient de poser des problèmes de dilatation différentielle. Ces plaques bipolaires conduisent à des pertes ohmiques importantes provenant de résistances de contact relativement importantes résultant du fait que les contacts entre les plaques rigides sont parfois irréguliers. En outre, les assemblages réalisés avec ces plaques sont relativement lourds dans la mesure où les plaques bipolaires métalliques ou en carbone massif usiné ont un poids important. Enfin, la fabrication de ces plaques bipolaires est complexe puisqu'il faut, en particulier, usiner avec précision des réseaux de canaux de circulation de gaz souvent complexes.  These bipolar plates have the particular disadvantage of being rigid, which can cause problems to ensure a good seal of the various contacts that may be between the bipolar plates of a large stack. These bipolar plates also have the disadvantage of having corrosion problems, which lead to the poisoning of catalytic sites. Bipolar plates made of metallic material have the further disadvantage of causing problems of differential expansion. These bipolar plates lead to significant ohmic losses from relatively large contact resistances resulting from the fact that the contacts between the rigid plates are sometimes irregular. In addition, the assemblies made with these plates are relatively heavy insofar as the metal bipolar plates or machined solid carbon have a significant weight. Finally, the manufacture of these bipolar plates is complex since it is necessary, in particular, to accurately machine networks of gas circulation channels often complex.

Le but de la présente invention est de remédier à ces inconvénients en proposant une plaque bipolaire pour pile à combustible de type à membrane échangeuse de protons qui soit légère, qui puisse être fabriquée facilement, qui ne pose pas de problème de corrosion ni de problème de dilatation ou de problème de contact et qui facilite la réalisation des étanchéités.  The object of the present invention is to remedy these drawbacks by proposing a bipolar plate for fuel cell type proton exchange membrane which is light, which can be easily manufactured, which does not pose a problem of corrosion or problem of dilation or problem of contact and which facilitates the realization of seals.

A cet effet, l'invention a pour objet une plaque bipolaire pour pile à combustible du type à membrane échangeuse d'ions, constituée de deux couches en matériau poreux conducteur d'électricité séparées par une membrane étanche, les deux couches en matériau poreux étant connectées électriquement.  For this purpose, the subject of the invention is a bipolar plate for fuel cell of the ion exchange membrane type, consisting of two layers of electrically conductive porous material separated by a sealed membrane, the two layers of porous material being electrically connected.

De préférence, la membrane étanche est une membrane en poly- mère.  Preferably, the waterproof membrane is a polymer membrane.

Les couches en matériau poreux peuvent être conformées pour for-mer des canaux de circulation de fluide.  The porous material layers may be shaped to form fluid circulation channels.

Le matériau poreux est constitué, par exemple, de fibres de carbone ou d'une mousse métallique.  The porous material is made of, for example, carbon fibers or a metal foam.

De préférence, la connexion électrique des deux couches de matériau poreux est assurée par des fibres conductrices de courant traversant la membrane étanche.  Preferably, the electrical connection of the two layers of porous material is provided by current-conducting fibers passing through the sealed membrane.

L'invention concerne également une pile à combustible comprenant un empilement alterné d'assemblage membranes/électrodes et de plaques selon l'invention.  The invention also relates to a fuel cell comprising an alternating stack of membrane / electrode assembly and plates according to the invention.

L'invention va maintenant être décrite de façon plus précise mais non limitative en regard de l'unique figure annexée qui représente, de façon schématique, un empilage de plaques bipolaires et d'assemblages membranes électrodes d'une pile à combustible à membrane échangeuse de pro- tons.  The invention will now be described in a more precise but nonlimiting manner with regard to the single appended figure which schematically represents a stack of bipolar plates and electrode membrane assemblies of a membrane exchange fuel cell. protons.

Pour réaliser un empilement alterné de plaques bipolaires et d'assemblages membranes électrodes, tel que représenté à la figure unique, et qui est constitué de trois plaques bipolaires 1, 1', 1" séparées par deux assemblages membranes électrodes 2, 2'. Les trois plaques bipolaires 1, 1', 1" qui sont identiques sont constituées de deux couches 10 et 11 ou 10' et 11' ou 10" et Il", respectivement, de matériau poreux tel que par exemple un matériau constitué de fibres de carbone formant un feutre ou du coton, ou bien d'une mousse métallique très poreuse, séparées par des membranes étanches au fluide 12 ou 12' ou 12", respectivement, les deux couches poreuses 10 et 11 ou 10' et 11' ou 10" et 11" étant connectées électriquement entre elles par l'intermédiaire de fibres conductrices 13 ou 13' ou 13", respectivement, traversant la membrane étanche 12 ou 12' ou 12".  To achieve an alternating stack of bipolar plates and membrane electrode assemblies, as shown in the single figure, and which consists of three bipolar plates 1, 1 ', 1 "separated by two electrode membrane assemblies 2, 2'. three bipolar plates 1, 1 ', 1 "which are identical consist of two layers 10 and 11 or 10' and 11 'or 10" and 11 ", respectively, of porous material such as for example a material made of carbon fibers forming a felt or cotton, or a very porous metal foam, separated by fluid-tight membranes 12 or 12 'or 12 ", respectively, the two porous layers 10 and 11 or 10' and 11 'or 10" and 11 "being electrically connected to each other via conductive fibers 13 or 13 'or 13", respectively, passing through the sealed membrane 12 or 12' or 12 ".

Lorsque la pile à combustible est en service, chacune des couches poreuses est alimentée en un gaz actif et par exemple la couche 11 de la plaque bipolaire 1 est alimentée en gaz carburant qui passe à travers la couche poreuse Il et vient au contact de la membrane électrode 2. La couche poreuse 10' de la plaque bipolaire 1' est alimentée en gaz comburant qui diffuse à travers la couche poreuse et vient lécher l'autre face de la membrane électrode 2. Le gaz carburant qui passe à travers la couche poreuse 11 réagit à travers la membrane électrode avec le gaz comburant qui passe à travers la couche poreuse 10', cette réaction produit de l'eau qui est évacuée également à travers la couche poreuse 10', et génère simultanément une tension électrique. De la même façon, la couche 11' est alimentée en gaz carburant, par exemple de l'hydrogène, qui réagit à travers la membrane électrode 2' avec du gaz comburant, par exemple de l'oxygène, qui passe à travers la couche poreuse 10". Du fait de la présence de la membrane étanche 12', le gaz comburant qui passe à travers la couche poreuse 10' n'est pas en contact avec le gaz carburant qui passe à travers la couche 11', il résulte que les seules réactions électrochimiques qui ont lieu sont les réactions électrochimiques qui s'effectuent à travers les membranes électrodes.  When the fuel cell is in use, each of the porous layers is fed with an active gas and for example the layer 11 of the bipolar plate 1 is supplied with fuel gas which passes through the porous layer II and comes into contact with the membrane electrode 2. The porous layer 10 'of the bipolar plate 1' is supplied with oxidizing gas which diffuses through the porous layer and licks the other side of the electrode membrane 2. The fuel gas which passes through the porous layer 11 reacts through the electrode membrane with the oxidant gas that passes through the porous layer 10 ', this reaction produces water which is also discharged through the porous layer 10', and simultaneously generates an electrical voltage. In the same way, the layer 11 'is supplied with fuel gas, for example hydrogen, which reacts through the membrane electrode 2' with oxidizing gas, for example oxygen, which passes through the porous layer Due to the presence of the impervious membrane 12 ', the oxidant gas which passes through the porous layer 10' is not in contact with the fuel gas which passes through the layer 11 ', it follows that the the only electrochemical reactions that take place are the electrochemical reactions that take place through the electrode membranes.

Ainsi, l'empilement constitué par une couche poreuse 11 alimentée en gaz carburant, par l'électrode 2 et par la couche poreuse 10' parcourue par des gaz comburant constitue un générateur d'électricité. De même, l'empilement constitué par la couche poreuse 11' parcourue par du gaz carburant, par la membrane électrode 2' et la couche poreuse 10" parcourue par du gaz comburant constitue un deuxième générateur d'électricité.  Thus, the stack consisting of a porous layer 11 fed with fuel gas, the electrode 2 and the porous layer 10 'traversed by oxidizing gases constitutes an electricity generator. Similarly, the stack constituted by the porous layer 11 'traversed by fuel gas, the membrane electrode 2' and the porous layer 10 "traversed by oxidizing gas constitutes a second electricity generator.

Du fait de la présence des fibres 13' conductrices d'électricité qui taversent la membrane étanche 12', le premier générateur de courant qui vient d'être décrit est connecté en série au deuxième générateur de courant qui vient d'être décrit, et ainsi de suite dans l'ensemble de l'empilement qui constitue la pile à combustible génératrice de courant électrique.  Due to the presence of the electrically conductive fibers 13, which surround the sealed membrane 12 ', the first current generator which has just been described is connected in series with the second current generator which has just been described, and thus immediately in the entire stack that constitutes the fuel cell generating electricity.

Une telle conception de plaque bipolaire présente de nombreux avan-tages.  Such a bipolar plate design has many advantages.

En effet, une telle plaque bipolaire est souple et par conséquent tous les problèmes d'adaptation de l'empilement pour assurer un bon contact des plaques successives ou pour assurer l'étanchéité entre deux plaques successives sont simplifiés.  Indeed, such a bipolar plate is flexible and therefore all the problems of adaptation of the stack to ensure good contact of successive plates or to ensure sealing between two successive plates are simplified.

De plus, les plaques sont en des matériaux qui ne posent pas les problèmes de dilatation différentielle que l'on rencontre avec les plaques bipolaires rigides.  In addition, the plates are of materials that do not pose the differential expansion problems that are encountered with rigid bipolar plates.

La souplesse de ces plaques bipolaires permet également d'obtenir une homogénéité de la pression des gaz réactifs dans les chambres réactionnelles en minimisant notamment les risques d'écart de pression entre l'anode et la cathode, du fait d'une auto-comprensation liée à la rigidité des membranes.  The flexibility of these bipolar plates also makes it possible to obtain a homogeneity of the pressure of the reactive gases in the reaction chambers, in particular minimizing the risk of pressure difference between the anode and the cathode, due to self-compression to the rigidity of the membranes.

Enfin, ces plaques souples évitent les irrégularités de pressions de contact locales. En particulier, elles évitent les pressions de contact locales élevées, notamment sur la partie périphérique des membranes échangeu- ses d'ions.  Finally, these flexible plates avoid the irregularities of local contact pressures. In particular, they avoid high local contact pressures, especially on the peripheral part of the ion exchange membranes.

Pour assurer le fonctionnement d'une telle pile à combustible, il est nécessaire de prévoir des inserts par exemple en matériau polymère permettant de créer des arrivées de fluide actif. On peut en outre prévoir des canaux de circulation d'un fluide de refroidissement noyés dans les maté- riaux poreux.  To ensure the operation of such a fuel cell, it is necessary to provide inserts for example of polymer material for creating active fluid inflows. It is also possible to provide cooling fluid circulation channels embedded in the porous materials.

Claims (6)

REVENDICATIONS 1. Plaque bipolaire pour pile à combustible du type à membrane échangeuse d'ions, caractérisée en ce qu'elle est constituée de deux couches (10, 11) en matériau poreux conducteur d'électricité séparée par une membrane étanche (12), les deux couches en matériau poreux étant connectées électriquement.  Bipolar plate for ion exchange membrane type fuel cell, characterized in that it consists of two layers (10, 11) of porous electrically conductive material separated by a sealed membrane (12), the two layers of porous material being electrically connected. 2. Plaque bipolaire selon la revendication 1, caractérisée en ce que la membrane étanche (12) est une membrane en polymère.  2. Bipolar plate according to claim 1, characterized in that the waterproof membrane (12) is a polymer membrane. 3. Plaque bipolaire selon la revendication 1 ou la revendication 2, caractérisée en ce que les couches en matériau poreux (10, 11) sont conformées pour former des canaux de circulation de fluide.  Bipolar plate according to claim 1 or claim 2, characterized in that the layers of porous material (10, 11) are shaped to form fluid circulation channels. 4. Plaque bipolaire selon l'une queconque des revendications 1 à 3, caractérisée en ce que le matériau poreux est constitué de fibres de carbone ou d'une mousse métallique.  4. Bipolar plate according to one of claims 1 to 3, characterized in that the porous material is made of carbon fibers or a metal foam. 5. Plaque bipolaire selon la revendication 4, caractérisée en ce que la connexion électrique des deux couches (10, 11) de matériau poreux est assurée par des fibres (13) conductrices de courant traversant la membrane étanche.  5. Bipolar plate according to claim 4, characterized in that the electrical connection of the two layers (10, 11) of porous material is provided by current-conducting fibers (13) passing through the sealed membrane. 6. Pile à combustible du type à membrane échangeuse d'ions, carac-térisée en ce qu'elle comprend un empilement alterné d'assemblage membranes/électrodes et de plaques bipolaires selon l'une quelconque des revendications 1 à 5.  6. The ion exchange membrane type fuel cell, characterized in that it comprises an alternating stack of membrane / electrode assemblies and bipolar plates according to any one of claims 1 to 5.
FR0506668A 2005-06-29 2005-06-29 Bipolar plate for ion exchange membrane fuel cell, has two layers made of porous electricity conducting material, separated by polymer sealing membrane, where layers are electrically connected by conducting fibers traversing membrane Pending FR2888047A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0506668A FR2888047A1 (en) 2005-06-29 2005-06-29 Bipolar plate for ion exchange membrane fuel cell, has two layers made of porous electricity conducting material, separated by polymer sealing membrane, where layers are electrically connected by conducting fibers traversing membrane

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FR0506668A FR2888047A1 (en) 2005-06-29 2005-06-29 Bipolar plate for ion exchange membrane fuel cell, has two layers made of porous electricity conducting material, separated by polymer sealing membrane, where layers are electrically connected by conducting fibers traversing membrane

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010115495A3 (en) * 2009-04-08 2010-11-25 Elcomax Gmbh Bipolar plate for fuel or electrolyte cells
WO2011050314A1 (en) * 2009-10-22 2011-04-28 Enerfuel, Inc. Integrated pem fuel cell

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6103413A (en) * 1998-05-21 2000-08-15 The Dow Chemical Company Bipolar plates for electrochemical cells
US20030143452A1 (en) * 2002-01-30 2003-07-31 Aisin Seiki Kabushiki Kaisha Conductive member, a method for manufacturing the same and a method for manufacturing a separator for use in a fuel cell
EP1484812A2 (en) * 1997-01-24 2004-12-08 Lynntech Power Systems Limited Bipolar plates for electrochemical cell stacks
FR2858465A1 (en) * 2003-07-29 2005-02-04 Commissariat Energie Atomique POROUS STRUCTURES USED AS BIPOLAR PLATES AND METHODS OF PREPARING SUCH POROUS STRUCTURES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1484812A2 (en) * 1997-01-24 2004-12-08 Lynntech Power Systems Limited Bipolar plates for electrochemical cell stacks
US6103413A (en) * 1998-05-21 2000-08-15 The Dow Chemical Company Bipolar plates for electrochemical cells
US20030143452A1 (en) * 2002-01-30 2003-07-31 Aisin Seiki Kabushiki Kaisha Conductive member, a method for manufacturing the same and a method for manufacturing a separator for use in a fuel cell
FR2858465A1 (en) * 2003-07-29 2005-02-04 Commissariat Energie Atomique POROUS STRUCTURES USED AS BIPOLAR PLATES AND METHODS OF PREPARING SUCH POROUS STRUCTURES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010115495A3 (en) * 2009-04-08 2010-11-25 Elcomax Gmbh Bipolar plate for fuel or electrolyte cells
WO2011050314A1 (en) * 2009-10-22 2011-04-28 Enerfuel, Inc. Integrated pem fuel cell
US8455152B2 (en) 2009-10-22 2013-06-04 Enerfuel, Inc. Integrated PEM fuel cell

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