• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A separator plate is provided for a fuel cell, where polymer, for example PPS, is compounded with carbon powder and PTFE and moulded into a rigid shape with a flow channel pattern.
    公开号:DK201670823A1
    申请号:DKP201670823
    申请日:2016-10-19
    公开日:2017-12-11
    发明作者:Denys Gromadskyi
    申请人:Serenergy As；
    IPC主号:
    专利说明:

    A fuel cell stack and its method of production, a separator plate in particular a bipolar plate, for a fuel cell and its production
    FIELD OF THE INVENTION
    The present invention relates to a fuel cell stack and its method of production, a separator plate for a fuel cell and its production.
    BACKGROUND OF THE INVENTION
    International patent applications W02009/010066 and W02009/010067 by Scrcncrg) disclose proton exchange membrane (PEM) fuel cells where the membrane is sandwiched between rigid separator plates, especially bipolar plates, which mainly contair graphite and a binder.
    In connection with fuel cell stacks, especially for PEM (proton exchange membrane' fuel cells, the term separator plate is used for a rigid plate that separates membranef with a flow structure, typically channels, for flow of hydrogen fuel and oxygen-containing gas, and potentially also for flow of water, triethylene glycol (TEG) or silicone oil for cooling. Separator plates include bipolar plate, cooling plates, anode plates and cathode plates. A bipolar plate has a first side with a first flow structure for provision of hydrogen fuel to the fuel cell membrane and an opposite, second side with ί second flow structure for provision of oxygen to the neighbouring cell membrane. The oxygen is typically provided from air, which has a cooling effect on the fuel cell. Ir alternative configurations for fuel cells, there is provided an anode plate with first side having a flow structure for providing hydrogen to the fuel cell membrane and a cathode plates have a first side with a flow structure for providing oxygen to the fuel cell membrane. The membrane is then provided between the anode plate and the cathode plate Optionally the anode plate or the cathode plate or both have an opposite, second side which has a flow structure for coolant flow, for example water as a coolant. The tern separator plate also includes a cooling plate having on both sides a water flow structure for providing cooling to corresponding anode and cathode plates adjacent to the cooling plate. Examples of various configurations are given in W02009/010066 anc W02009/010067, where also the use of a cooling plate between an anode plate and i cathode plate is disclosed.
    An overview of composites for production of bipolar plates is disclosed in the artick “A Review of Thermoplastic Composites for Bipolar Plate Materials in PEM Fue Cells” by Yeetsom et al., published in the book, “Nanocomposites with Unique Properties and Applications in Medicine and Industry” ISBN 978-953-307-351-4 edited tn Dr. John Cupoletti and published on the Internet on WWW.intechopen.com in 2011 In this article, the authors discuss that thermoplastic resins, such as polypropylene (PP), polyethylene (PE), poly (vinylidene fluoride) (PVDF), liquid crystalline polymei (LCP), poly (phenylene sulfide) (PPS), and fluoropolymer are used less in bipolar plate fabrication than thermosetting resins. As a reason, this disclosure states that thermosetting resins have low viscosity, and thereby contain a higher proportion of conductive fillers. Especially, epoxy resin is seen as a popular choice for a polymer composite bipolar plate production.
    For bipolar plates, thermoplastics are disclosed in US9065086 and both thermoplastic and thermosetting resins are discussed in US7910501.
    Wet lay production techniques for bipolar plates are disclosed in the article “Development of bipolar plates for fuel cells from graphite filled wet-lay material and a thermoplastic laminate skin layer” by Cunningham et al, published in Journal of Powei Sources 165 (2007) 764-773. In this article, a composite mix of Carbon powder anc PTFE is used. A similar approach is found in Russian patent RU2333575C, disclosing a carbon layei on a metal substrate in order to provide a bipolar plate. In more detail of this method carbon powder and 1.5% PTFE (PolyTetraFluoroEthylene also called Teflon™) in ar alcohol suspension are mixed, dried and ground. A second mixture of carbon powdei and 15% PTFE is formed into a sheet on the metal substrate. The ground powder i; provided on the sheet and pressed at (250 kgf/cm2 = 25 MPa) at 140 degrees.
    Binder suspensions containing PTFE for mixing with carbon for electrode production if also disclosed in US patent application US2008/00031166.
    As an overall conclusion, a large variety of compositions are disclosed in the prior an for bipolar plates, but there is no general agreement on optimum production methodf and materials. However, there is a clear trend towards continuous refinement end improvements in different directions, be it thermosetting or thermoplastic resins. A pronounced driver for this development is a continuously growing fuel cell market.
    DESCRIPTION / SUMMARY OF THE INVENTION
    It is therefore the objective of the invention to provide an improvement in the art. Especially, it is an objective to provide an improved production technique and improvec material for separator plates in fuel cells. This objective is achieved with a method foi production and with a separator plate as described in more detail in the following. Λ definition of a separator plate, for example bipolar plate, was given in the introductior above.
    The method of producing a separator plate for a fuel cell comprises providing a material blend of at least 70% carbon powder, 0.5-5% PTFE, PolyTetraFluoroEthylene, anc 10-20% thermoplastic polymer different from PTFE and moulding the blend into ί separator plate. All percentages are by weight of the material of the final separatoi plate after evaporation of liquids that are involved in the process.
    The carbon powder should be electrically conducting. Examples of carbon powder are graphite, carbon black, graphene, carbon nanotubes or amorphous carbon. The firs two types of carbon are preferred. Typically, the size of the grains in the carbon blacl powder is in the sub-micron range, for example with an average size of between 20 anc 100 nm. For graphite powder, the average grain size is in the range of 0.1 to 20 microns, typically however, in the range of 0.25 to 5 microns.
    Examples of thermoplastic polymer are acrylonitrile butadiene styrene (ABS), cellulose acetate (CA), cellulose acetate butyrate (CAB), cellulose acetate phthalate (CAP), cyclo-olefine copolymer (COC), polyamide (PA), polyamide-imide (PAI), polybenzimidazole (PBI), poly-1-butene (PB), polybutylene terephthalate (PBT), polycarbonate (PC), polylactic acid (PLA), polychlorotrifluoroethene (PCTFE), polyether ether ketone (PEEK), polyether sulfone (PES), polyethylene (PE), polyetherimide (PEI), polyethylene terephthalate (PET), polyphenylene oxide (PPO), polyphenylene sulfide (PPS), polymethyl methacrylate (PMMA), polypropylene (PP), polyphenylene oxide (PPO), polystyrene (PS), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) polyvinylidcnc fluoride (PYDF) and mixtures thereof. Good experimental results were obtained with polyphenylene sulfide (PPS) as the polymer. PPS is an attractive candidate due to its chemical resistance and stabilty.
    For example, the PTFE is provided as a powder of finely divided PTFE. Examples o: particle sizes are in the range of 0.2 to 10 microns, optionally in the range of 0.5 to t microns or even in the range of 0.5 to 2 microns.
    In a practical embodiment, the carbon powder, thermoplastic polymer, and PTFE are provided as a blend of powder in a suspension, in which the powder is caused to sediment as slurry in the suspension. Optionally excess liquid is removed from the slurry The slurry is press moulded in a mould into a shape of a separator plate, for exampk including a potential channel flow pattern on one or both sides as initially discussed foi a separator plate, for example a bipolar plate, anode plate, cathode plate or cooling plate.
    For example, the carbon powder is mixed with the molten thermoplastic polymer, anc the mix is compounded to pellets. The hardened pellets are ground to a fine carbon-polymer powder prior to mixing with the finely divided PTFE in a suspension.
    Although, it is possible, in principle, to mix the dry carbon-polymer powder into the PTFE suspension, it is in some embodiments preferred that the carbon-polymer powdei is suspended in a first liquid prior to mixing it with the PTFE suspension. As the firs liquid, alcohol or a liquid mainly containing alcohol, is a good option. An alcohol is c preferred basis in order to prevent clogging of the carbon-polymer powder. Example of alcohol are methanol, ethanol, propanol, iso-propanol, butanol, iso-butanol, penta-nol, iso-pentanol, hexanol, iso-hexanol, heptanol, iso-heptanol, octanol, iso-octanol 01 their mixtures. The alcohol acts as a surfactant for the carbon, which is hydrophobic adsorbing on its surface and thereby improving wettability of carbon particles by aqueous suspension of PTFE. A preferred surfactant is iso-propanol, which has good surface activity, high solubility in water, as well as relatively low boiling point. A second liquid is used for this PTFE suspension, for example water or a liquid containing mainly water. Optionally, in order to further prevent clogging of the particulate PTFE in the suspension, the suspension comprises a surfactant. An example of a surfactant is Triton X-100™ (commercially available from SigmaAldrich®), which is c nonionic and has a hydrophilic polyethylene oxide chain and an aromatic hydrocarbor lipophilic or hydrophobic group. The hydrocarbon group is a 4-phenyl group. The formula is C14H22O(C2H4O)n(n=9-10). Optionally, the suspension comprises 50-60°/i PTFE, 6-12% nonionic surfactant, and the rest deionized water.
    Advantageously, the PTFE water suspension is adjusted with respect to PTFE concentration prior to mixing with the carbon-polymer powder alcohol suspension. It ha turned out that a high concentration of PTFE when mixed with the carbon-polymei powder alcohol suspension can lead to a high tendency for agglomeration of the PTFI particles, which is to be avoided. Whereas the purchased PTFE suspension (from SigmaAldrich®) comprises 60% PTFE in water, it is advantageously diluted to a PTFI concentration in the range of 2-10%, for example 4-8%, with deionized water prior tc mixing with the carbon-polymer powder alcohol suspension. Good results were obtained experimentally with a 6% PTFE suspension.
    The mixture of the two suspensions is heated to a temperature in the range of 65°C tc 195°C. The selection of the temperature is dependent on the type of alcohol selectee such that the alcohol is boiling and thereby evaporating at least partly. The lower limii of 65°C is determined by the boiling point of methanol and the upper limit of 195°C fr the boiling point of octanol. If the first liquid comprises blends of alcohols in additior to water, the temperature in the liquid will step wise rise such that the liquid with the lowest boiling point, for example methanol with a boiling point of 64.7°C, evaporate.' first, after which the temperature rises until the next higher boiling of a component o: the liquid, for example 100°C for water. It is also pointed out that in case of the alcohol forming an azeotrope mixture with water, like iso-propanol, this mixture will boil a a lower temperature than the boiling point of pure iso-propanol (80.4°C vs. 82.5°C and without separation of the liquid components.
    The mixture is kept at this temperature for a time in the range of 2 to 20 minutes, resulting in a slurry of agglomerations of particles, which sediment into a sludge thai turns into a malleable and pliable substance.
    In some embodiments, the boiling and evaporation procedure is stopped before all liquid, especially alcohol, is evaporated because some remains of alcohol are useful in the subsequent rolling process, as explained in the following. For example, the evaporatior is stopped well before the sludge dries and, in some embodiments, before the alcohol if entirely evaporated. If the remaining liquid level after the evaporation step is wel above the sludge level, for example due to remaining water, the remaining liquid is removed, for example by pouring it off the surface of the sludge.
    Thus malleable and pliable substance is rolled into a sheet by a rolling press, at roon temperature or at elevated temperature while the substance is still wet from the liquid typically alcohol, and potentially a small amount of water. Residuals of alcohol play i role as plasticizer to PTFE, and it is believed that PTFE creates a fiber-like structure with the graphite/polymer compound when being exposed to the rolling press. The sheet further kept at a temperature in the range of 100°C to 270°C in the range of 1C to 60 minutes to remove all liquid residuals, for instance, alcohol, water and potentia surfactants, for example Triton X-100™. An example of a rolling process for car-bon/polymer mixes is disclosed in US2005/0271798. A similar rolling procedure can be applied in connection with this method.
    The rolled structure is moulded under pressure and elevated temperature in a stationary mould in which the separator plates are formed. For example, the moulding is done at c pressure in the range of 20 to 60 MPa, optionally in the range of 30 to 50 MPa. A suit able temperature is in the range of 250 to 320°C, for example in the range of 280 tc 300°C, well below the sintering temperature of PTFE, which is typically in the range o: 360 to 380 °C, slightly above the crystalline melting point PTFE. When heating PTFI to or above the sintering point, it decomposes, which is to be avoided.
    The structuring of the separator plates in the mould includes the potential forming of i flow pattern, for example channels for flow of hydrogen fuel, oxygen-containing gas or coolant, for example liquid coolant, such as water, TEG or silicone oil. After the moulding, typically, no further structuring by machining of the separator plate is necessary.
    The final separator plate comprises 10-20 % of thermoplastic polymer, 0.5-5% PTFE and at least 70% carbon powder, for example at least 75% carbon powder. For example, the PTFE concentration in the final separator plate is in the range of 1 to 3% fi weight. Such plate has experimentally shown excellent temperature stability, chemica resistance, and high electrical conductivity. It is therefore a proper candidate for separator plates, for example bipolar plates, in fuel cell systems, especially fuel cell stacks.
    All percentages are relative concentrations by weight.
    SHORT DESCRIPTION OF THE DRAWINGS
    The invention will be explained in more detail with reference to the drawing, where FIG. 1 is a perspective exploded view of a fuel sell stack assembly according to the present invention showing bipolar plates, membranes, sealants and endplates; FIG. 2 is a perspective view seen from the anode side of one “sandwich element’ comprising (from left to right): a sealant for sealing off the anode side of c PEM bipolar plate; a PEM bipolar plate; a sealant for sealing off the cathode side of a PEM bipolar plate; and finally a membrane; FIG. 3 is a perspective view seen from the cathode side of one “sandwich element’ comprising (from left to right): a membrane; a sealant for sealing off the cathode side of a PEM bipolar plate; a PEM bipolar plate; and finally a sealant foi sealing off the anode side of a PEM bipolar plate; FIG. 4 illustrates a fuel cell stack principle, where a bipolar plate is used between electrolytic membranes; FIG. 5 illustrates stages of the production method of a separator plate; FIG. 6 illustrates alternative fuel cell stack principles, where an anode plate and c cathode plate are oriented back-to-back with a cooling section between the anode plate and the cathode plate; FIG. 7 illustrates a further alternative fuel cell stack principle, where a cooling plate if sandwiched between a cathode plate and an anode plate and cooling is provided in the volume between the cooling plate and the anode plate and in the volume between the cooling plate and the cathode plate.
    DETAILED DESCRIPTION / PREFERRED EMBODIMENT FIG. 1 illustrates a PEM fuel cell stack 90 comprising a plurality of bipolar plates ] assembled between endplates 92. Proton exchange membranes (PEM) 40 between adjacent bipolar plates 1 are sealed against the environment by sealants 70 and 50. Fig. Ί is a perspective view onto the anode side of the bipolar plate 1 assembly comprising the membrane 40 and a sealant 70 for sealing off the anode side of a PEM bipolar plate anc a sealant 50 for sealing off the cathode side of a PEM bipolar plate. Correspondingly FIG. 3 is a perspective view onto the cathode side of the bipolar plate 1 assembly. The anode side comprises a serpentine channel pattern for flow of oxygen gas along the membrane 40 and efficient cooling by the oxygen gas, typically air. The cathode side comprises straight channels for transport of hydrogen along the membrane 40. FIG. z illustrates such configuration with a bipolar plate 10, on the anode side 28 of which c hydrogen flow is provided for donating protons to the electrolytic membrane 30 anc with a cathode side 26 on which oxygen or air or other fluid flows for accepting protons from the membrane 30. The cathode fluid, for example oxygen or air is used as c cooling medium for cooling the bipolar plate. The cathode side 26 of the bipolar plate ] is provided with a serpentine channel pattern as described above. Exemplary details o: the channel patterns and other details of the bipolar plate are explained ir W02009/010066 and W02009/010067.
    With reference to FIG. 5, production methods are explained for producing such bipolai plates.
    Graphite powder with an average grain size in the range of 0.25 to 5 microns is provided and mixed with 10-20% of thermoplastic polymer, see step 11 in FIG. 5. The percentage by weight and calculated relatively to the weight of the mix of carbon and polymer. An example of a thermoplastic polymer is PPS, which is advantageous due to it high chemical stability.
    As illustrated in stage 12, the polymer is heated until molten, and the carbon is thoroughly mixed with the polymer, for example by stirring the molten polymer with the carbon powder. The mix is then compounded into pellets, for example by use of t compounder with a pelletizer.
    Once, hardened, the pellets are ground into fine powder in a grinder, see step 13. Λ typical average grain size is few micrometres, for example in the range of 2 to 5 micrometres. Due to the thorough mixing, each grain of the powder comprises carbor and polymer. However, the concentration of polymer is so low, namely only 10-20% that a proper electrical conductivity is maintained. For example, the specific resistance of the compounded material is 5-12 ιηΩ-cm at 25°C.
    The ground fine carbon-polymer powder is then suspended in alcohol, see step 14. Foi the suspension, alcohol is a preferred basis, for example, methanol, ethanol, propanol iso-propanol, butanol, iso-butanol, pentanol, iso-pentanol, hexanol, iso-hexanol, hep-tanol, iso-heptanol, octanol, iso-octanol or their mixtures. The alcohol acts as a surfactant for the carbon, which is hydrophobic, adsorbing on its surface and thereby improving wettability of carbon particles by aqueous suspension of PTFE. A preferred surfactant is iso-propanol which has good surface activity, high solubility in water as well a relatively low boiling point.
    The carbon-polymer alcohol suspension is mixed with a water-based suspension comprising finely divided particulate PTFE, see step 16. For example, the PTFE particle have a size in the range of 0.2 to 10 microns, optionally in the range of 0.5 to 5 mi crons or even in the range of 0.5 to 2 microns. Optionally, in order to further preven clogging of the particulate PTFE in the suspension, the suspension comprises a surfactant. An example of a surfactant is Triton X-100™, which is a nonionic and has a hydrophilic polyethylene oxide chain and an aromatic hydrocarbon lipophilic or hydro-phobic group. The hydrocarbon group is a 4-phenyl group. The formula ii C14H220(C2H40)n(n=9-10).
    As an option, the PTFE water suspension is diluted with water in order to lower the PTFE concentration, for example to 2-10%, prior to mixing with the carbon-polymei powder alcohol suspension in order to reduce the risk for agglomeration of the PTFE particles during mixing with alcohol.
    The mixture of the two suspensions is heated to a temperature in the range of 65°C tc 195°C, sees step 17, the temperatures determined by the boiling points of the used alcohol. The mixture is kept at this temperature for a time in the range of 2 to 20 minute resulting in a slurry of agglomerated particles, which sediment into a sludge remaining as a malleable and pliable substance. The evaporation is stopped before the liquid leve lowers so much that the sludge dries. Also, typically, some remains of alcohol are desired for the rolling process. If the liquid level is well above the sludge level, the remaining liquid is removed, for example by pouring it off the surface of the sludge, set step 18.
    Thus malleable and pliable substance is rolled into a sheet by a rolling press while the substance is still wet from the liquid, typically alcohol, and potentially a small amoun of water, see step 20. The rolling can be done without heated rollers, however, the evaporation of the residual liquid is faster when rolling at elevated temperature, foi example at a temperature in the range of 65-195°C. Residuals of alcohol play a role a plasticizer to PTFE, and it is believed that PTFE creates a fiber-like structure with the graphite/polymer compound when being exposed to the rolling press.
    The rolled sheet is further kept at a temperature in the range of 100°C to 270°C in the range 10 to 60 minutes to remove all liquid residuals, for instance, alcohol, water anc potential surfactants, optionally Triton X-100™.
    An example of a rolling process for carbon/polymer mixes is disclosed ir US2005/0271798. A similar rolling procedure can be applied in connection with thii method.
    The rolled structure is moulded under pressure, potentially at elevated temperature, ir a stationary mould in which the separator plates are formed, see step 21. For example the moulding is done at elevated temperature and at a pressure in the range of 20 to 6C MPa, for example in a range of 30-50 MPa. A suitable elevated temperature is in the range of 250-320°C, for example in the range of 280-300°C, well below the sintering temperature of PTFE, which is typically in the range of 360-380 °C, slightly above the crystalline melting point PTFE. When heating PTFE to or above the sintering point, ii decomposes, which is to be avoided. As an alternative, moulding is done at lower temperature and higher pressure. For example, the moulding is done at a temperature between at room temperature or between 25°C and 200°C at pressures of 200-400 MPa.
    The structuring of the separator plates in the mould includes the potential forming of t flow pattern, for example channels for flow of hydrogen fuel, oxygen-containing gas or coolant, for example liquid coolant, such as water. After the moulding, typically, nc further structuring by machining of the separator plate is necessary.
    The production method is not only suitable for bipolar plates. It applies equally well tc other separator plates, such as cathode plates, anode plates and cooling plates. Sue! examples are illustrated in FIG. 6 and 7. FIG. 6 illustrates an embodiment, where a cathode plate 34 with a cathode side 26 ii combined with an anode plate 36 with anode side 28 and with cooling fluid 32, for example gas or liquid in a space 32 between the two plates. In the space 32, the cathode plate 34 or the anode plate 36 are provided with a channel pattern for example serpentine channel pattern, as described above for efficient cooling by the cooling fluid. FIG. 7 illustrates a further alternative, where a cathode plate 34 and an anode plate 3( are sandwiching a cooling plate 38 such that two cooling spaces 32 are provided, one cooling volume between the cooling plate 38 and the cathode plate 34 and anothei cooling volume between the cooling plate 38 and the anode plate 36. The cooling plate 38 is provided with a channel pattern on both of its sides, for example a serpentine channel pattern as described above.
    权利要求:
    Claims (17)
    [1] 1. A method of producing a separator plate for a fuel cell by providing a materia blend of powder of at least 70% carbon powder, 0.5-5% PTFE, PolyTetraFluoroEth-ylene, and 10-20% thermoplastic polymer different from PTFE, all percentages b} weight of the material, and moulding the blend into a separator plate.
    [2] 2. A method according to claim 1, wherein the method comprises providing the blenc of powder as a suspension, sedimenting the powder as slurry in the suspension, removing excess liquid from the slurry and press moulding the slurry in a mould into a shape of a separator plate.
    [3] 3. A method according to claim 2, wherein method comprises - melting the thermoplastic polymer and mixing the thermoplastic polymer with carbon-powder to provide a carbon-loaded polymer; - compounding the carbon-loaded polymer mix into pellets; - grinding the pellets into carbon-polymer powder; - providing a suspension of finely divided PTFE particles; - mixing the carbon-polymer powder with the PTFE suspension to provide a car-bon/polymer/PTFE suspension; - heating the carbon/polymer/PTFE suspension to cause evaporation of liquid from the suspension until a wet slurry of agglomerated particles sediments remains as a malleable and pliable substance; - removing excess liquid from the malleable and pliable substance; - press rolling the malleable and pliable substance into a sheet; - keeping the sheet at a second temperature in the range of 100°C to 270°C until al liquid residuals are evaporated; - press moulding the sheet in a mould into a shape of a separator plate.
    [4] 4. A method according to claim 3, wherein method comprises - suspending the carbon-polymer powder in a first liquid to provide a carbon-polymei powder suspension, - providing the finely divided PTFE particles suspended in a second liquid; - mixing the carbon-polymer powder suspension with the PTFE suspension to provide the carbon/polymer/PTFE suspension.
    [5] 5. A method according to claim 4, wherein the first liquid is an alcohol, or wherein the first liquid comprises an alcohol or a blend of alcohols as the main ingredient.
    [6] 6. A method according to claim 4 or 5, wherein the first temperature is in the range o 65°C to 195°C.
    [7] 7. A method according to any preceding claim, wherein the carbon powder is graphite powder.
    [8] 8. A method according to any preceding claim, wherein the polymer is polyphenylene sulfide.
    [9] 9. A method according to any preceding claim, wherein the moulding is done at a pressure in the range of 40 to 100 MPa and at a temperature in the range of 200-330°C, oi wherein the moulding is done at a pressure in the range of 200 to 400 MPa and at ί temperature in the range of 25-200°C.
    [10] 10. A method according to any preceding claim, wherein the separator plate is ί bipolar plate, and the method comprises moulding the sheet into a bipolar plate with ί flow channel pattern on each side of the bipolar plate.
    [11] 11. A fuel cell separator plate of a rigid material and comprising a flow charme pattern on at least one of its side for flow of fluid through the flow channel pattern, the material comprising an intermix of at least 70% carbon powder, 0.5-5% PTFE, and 10-20% thermoplastic polymer different from PTFE, all percentages by weight of the material.
    [12] 12. A fuel cell separator plate according to claim 11, wherein the carbon powdei is graphite powder.
    [13] 13. A fuel cell separator plate according to claim 11 or 12, wherein the thermoplastic polymer is polyphenylene sulfide.
    [14] 14. A fuel cell separator plate according to anyone of the claims 11-13, whereir the separator plate is a bipolar plate with a flow channel patter for fluid on either side of the bipolar plate.
    [15] 15. A method of producing a fuel cell stack, the method comprising, providing ί plurality of fuel cell separator plates according to anyone of the claims 6-9 or producing a plurality of separator plates by to a method according to anyone of the claims 1-10, arranging the separator plates as an array with fuel cell membranes between the separator plates, the membranes separating the hydrogen fuel from the oxygen gas.
    [16] 16. A fuel cell stack with a plurality of fuel cell separator plates according to anyone of the claims 11-14 or with a plurality of fuel cell separator plates produced by to ί method according to anyone of the claims 1-10.
    [17] 17. A fuel cell stack according to claim 16, wherein the fuel cells of the fuel cel stack are PEM fuel cells with proton exchange membranes between the separatoi plates.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3529842B1|2020-12-02|A method for producing a separator plate for a fuel cell and a method for producing a fuel cell stack with such separator
    JP5524800B2|2014-06-18|Membrane electrode assembly
    US6926995B2|2005-08-09|Fuel cell separators and solid polymer fuel cells
    KR20080080133A|2008-09-02|Ultracapacitor electrode with controlled binder content
    CN101341616B|2010-05-19|Separator material for solid polymer electrolyte fuel cell and process for producing the same
    JP4970698B2|2012-07-11|Conductive composite material and fuel cell electrode using the conductive composite material
    JP4168341B2|2008-10-22|Microcomposite powders based on graphite flakes and fluoropolymers and articles made with these powders
    CA2980283A1|2016-09-29|Porous electrodes and electrochemical cells and liquid flow batteries therefrom
    KR100801596B1|2008-02-11|Hydrophilic inorganic aggregate, its preparation process, hydrophilic composite material and bipolarplate for fuel cell comprising it
    AU2016235356A1|2017-10-12|Porous electrodes and electrochemical cells and liquid flow batteries therefrom
    KR20160033856A|2016-03-29|Conducting film and method of manufacturing the same
    FR2812119A1|2002-01-25|A composite conductive material for use in the form of electrodes for fuel cells contains a high pressure fritted mixture of lamellar graphite, agglomerated lamellar graphite and a fluorinated thermoplastic binder
    KR20100002429A|2010-01-07|Manufacturing method of titanium dioxide and carbon material composite electrode for capacitive deionization
    DE102009035961A1|2010-03-04|Layered electrode for electrochemical cells
    JP2005197064A|2005-07-21|Electrode structure for fuel cell, gas diffusion electrode, and fuel cell
    JP4733008B2|2011-07-27|Conductive resin molded body and method for producing the same
    EP3444884A1|2019-02-20|Electrically conductive contact plate for electrochemical cells, electrochemical cell with such a contact plate and method for the production thereof
    JP2005123044A|2005-05-12|Separator for fuel cell
    US20220069318A1|2022-03-03|Method for Producing Separator Plates for a Fuel Cell
    CN114207889A|2022-03-18|Method for producing separator
    WO2021027999A1|2021-02-18|Method of producing separator plates
    WO2018111636A1|2018-06-21|Monopolar plate-electrode assemblies and electrochemical cells and liquid flow batteries therefrom
    同族专利:
    公开号 | 公开日
    US20190260037A1|2019-08-22|
    DK179150B1|2017-12-11|
    WO2018072803A1|2018-04-26|
    JP2019533893A|2019-11-21|
    EP3529842A1|2019-08-28|
    EP3529842B1|2020-12-02|
    CN110114920A|2019-08-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3538732A1|1984-12-20|1986-06-26|BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau|Process for manufacturing an electrode for an electrochemical cell, especially for the electrochemical production of H2O2 and H2, and electrode for an electrochemical cell|
    JPS62147662A|1985-12-23|1987-07-01|Fuji Electric Co Ltd|Manufacture of separating plate for fuel cell|
    JP2002231263A|2001-02-05|2002-08-16|Yodogawa Hu-Tech Kk|Separator of fuel cell and its manufacturing method|
    EP1758185A1|2004-05-31|2007-02-28|Matsushita Electric Industries Co., Ltd.|Polyelectrolyte fuel cell-use separator, polyelectrolyte fuel cell, method of evaluating polyelectrolyte fuel cell-use separator, and production method of polyelectrolyte fuel cell-use separator|
    US7919213B1|2005-08-09|2011-04-05|Becker Rolf R|Fuel cell bipolar plate and composition therefore|
    CN101174695A|2007-10-24|2008-05-07|山东大学|Double polar plate used for phosphoric acid type fuel cell and method for producing the same|
    EP3041076A1|2015-01-02|2016-07-06|Hankook Tire Co., Ltd.|Fuel cell separating plate and method of manufacturing the same|
    EP0970530B1|1997-03-12|2002-10-16|Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno|Method for manufacturing a bipolar plate|
    US5942347A|1997-05-20|1999-08-24|Institute Of Gas Technology|Proton exchange membrane fuel cell separator plate|
    CA2311196C|1999-06-14|2005-08-16|Kawasaki Steel Corporation|A fuel cell separator, a fuel cell using the fuel cell separator, and a method for making the fuel cell separator|
    JP2002025340A|2000-07-04|2002-01-25|Nisshinbo Ind Inc|Conductive resin component, fuel cell separator and manufacturing method of the same, and solid polymer fuel cell|
    FR2817076A1|2000-11-20|2002-05-24|Atofina|MICROCOMPOSITE POWDER BASED ON AN ELECTRICAL CONDUCTOR AND A FLUOROPOLYMER AND OBJECTS MADE WITH THIS POWDER|
    WO2002093670A1|2001-05-11|2002-11-21|Kureha Chemical Industry Company, Limited|Separator for solid state polymer type fuel cell and method for producing the same|
    CN100505401C|2004-05-31|2009-06-24|松下电器产业株式会社|Polyelectrolyte fuel cell-use separator, polyelectrolyte fuel cell, method of evaluating polyelectrolyte fuel cell-use separator, and production method of polyelectrolyte fuel cell-use separator|
    EP2717369A4|2011-05-30|2015-03-25|Showa Denko Kk|Method for manufacturing fuel-cell separator|
    CN102610832B|2012-03-26|2015-01-21|四川省达州钢铁集团有限责任公司|Manufacturing method of electrode plate for vanadium redox flow battery|
    KR102269931B1|2014-09-29|2021-06-28|코오롱인더스트리 주식회사|Precursor of thermoplastic prepreg for biporal plate and method of thermoplastic prepreg for biporal plate thereby|CN113454820A|2018-11-12|2021-09-28|飞势生态解决方案有限公司|Method for gluing two plates together for use in a fuel cell, in particular for gluing bipolar plates in a fuel cell|
    US20220069318A1|2019-01-03|2022-03-03|Fischer Eco Solutions Gmbh|Method for Producing Separator Plates for a Fuel Cell|
    DK180368B1|2019-08-14|2021-02-09|Blue World Tech Holding Aps|Method of producing separator plates|
    CN111628183A|2020-05-27|2020-09-04|先进储能材料国家工程研究中心有限责任公司|Preparation method of fuel cell catalyst slurry|
    WO2021244719A1|2020-06-04|2021-12-09|Blue World Technologies Holding ApS|Separator plate for a fuel cell, precursor therefore and its method of production|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201670823A|DK179150B1|2016-10-19|2016-10-19|A fuel cell stack and its method of production, a separator plate in particular a bipolar plate, for a fuel cell and its production|DKPA201670823A| DK179150B1|2016-10-19|2016-10-19|A fuel cell stack and its method of production, a separator plate in particular a bipolar plate, for a fuel cell and its production|
    CN201780078341.2A| CN110114920A|2016-10-19|2017-10-16|Method for manufacturing the method for fuel cell isolation board and for manufacturing the fuel cell pack with this isolation board|
    PCT/DK2017/050343| WO2018072803A1|2016-10-19|2017-10-16|A method for producing a separator plate for a fuel cell and a method for producing a fuel cell stack with such separator|
    JP2019542775A| JP2019533893A|2016-10-19|2017-10-16|Manufacturing method of separator plate for fuel cell and manufacturing method of fuel cell stack including the separator|
    US16/342,336| US20190260037A1|2016-10-19|2017-10-16|A Method for Producing a Separator Plate for a Fuel Cell and a Method for Producing a Fuel Cell Stack With Such Separator|
    EP17787324.7A| EP3529842B1|2016-10-19|2017-10-16|A method for producing a separator plate for a fuel cell and a method for producing a fuel cell stack with such separator|
    [返回顶部]