EP3619763A1 - Procede d'assemblage pour pile a combustible - Google Patents
Procede d'assemblage pour pile a combustibleInfo
- Publication number
- EP3619763A1 EP3619763A1 EP18728925.1A EP18728925A EP3619763A1 EP 3619763 A1 EP3619763 A1 EP 3619763A1 EP 18728925 A EP18728925 A EP 18728925A EP 3619763 A1 EP3619763 A1 EP 3619763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- electrode
- reinforcing
- polymer electrolyte
- opening
- 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.)
- Withdrawn
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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- 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
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- H01M8/028—Sealing means characterised by their material
- H01M8/0282—Inorganic 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method of manufacturing a fuel cell membrane assembly.
- PEMFC corresponding to the acronym for "proton exchange membrane fuel cells” or “polymer electrolyte membrane fuel cells” have particularly advantageous compactness properties.
- Each cell comprises a polymer electrolyte membrane allowing only the passage of protons and not the passage of electrons.
- the membrane is brought into contact with an anode on a first face and with a cathode on a second face to form a membrane / electrode assembly called AME.
- the aforementioned assembly is generally performed by successive superposition of the different membranes and electrodes with an interposition of reinforcing membranes to support the assembly.
- One solution would be to use a robotic device that would be suitable for successively assembling the various elements together.
- a simple successive stacking of different thicknesses is insufficient since it requires the use of significant amounts of active membrane, which is expensive.
- the invention aims in particular to provide a simple, effective and economical solution to this problem.
- the method proposes first of all to provide the different membranes to be assembled to one another, which makes it possible to better optimize the quantity of material used.
- opening implies a closed contour that has the property of being devoid of end without being infinite.
- edge refers to a closed contour that has the property of being devoid of end without being infinite.
- closed in relation to the term “opening” indicates that the passage through the opening is effected through the element closing said opening.
- the membrane / electrode assembly obtained is devoid of spaces or cavities inside thereof.
- the first electrode and the second electrode are each in contact with the polymer electrolyte membrane.
- the method comprises a step a) in which the polymer electrolyte membrane is secured to one of the first reinforcing membrane and the second reinforcing membrane and so that it closes the opening of said reinforcing membrane concerned.
- This joining operation of the electrolytic membrane can advantageously be performed by laser welding.
- the method may consist in arranging one of the first reinforcing membrane and the second reinforcing membrane on a support and then unwinding a polymer electrolyte membrane above the opening of said membrane so that it closes the opening of this membrane.
- a second step the possible folds of the polymer electrolyte membrane are removed and the external edge of the polymer electrolyte membrane, for example by laser melting, is connected in a subsequent step to the inner edge of the reinforcing membrane considered.
- first reinforcing membrane and the first electrode may be secured to one another in a step ⁇ ), prior to step f), the opening of the first reinforcing membrane being closed by the first electrode.
- Preassembling the first reinforcing membrane and the first electrode makes it easier to assemble the different thicknesses. Indeed, said two layers are thus assembled simultaneously to the other layers of the assembly.
- Step ⁇ can be performed by arranging the first electrode on a support and by arranging the first reinforcing membrane above the first electrode, then by joining the first electrode to the first reinforcing membrane.
- the fastening may include the application of a heating member on the first reinforcing membrane.
- the second reinforcing membrane and the second electrode may also be secured to one another in a step ⁇ 2), prior to step f), the opening of the second reinforcing membrane being closed by the second electrode.
- Step ⁇ 2 may be performed by arranging the second reinforcing membrane on a support and arranging the second electrode above the second reinforcing membrane, and then securing the second electrode to the second reinforcing membrane.
- the fastening may include the application of a heating member on the first electrode.
- Step a) may consist of a step ai in which the polymer electrolyte membrane is secured to the first reinforcing membrane or in a step 02) in which the polymer electrolyte membrane is secured to the second reinforcing membrane.
- Step a1) can be performed before step ⁇ ), the first electrode being arranged opposite the polymer electrolyte membrane with respect to the first reinforcing membrane.
- Step 02) can be performed before step ⁇ 2), the second electrode being arranged opposite the polymer electrolyte membrane with respect to the second reinforcing membrane.
- the steps ⁇ ) and ⁇ 2) are carried out with the polymer electrolyte membrane already integral with the first or second reinforcing membranes.
- the steps of joining membranes and the electrode as mentioned above are preferably carried out by a heating punch applied to the superposition of formed layers. It is desirable that the heating member or the punch does not come into contact with the membrane to prevent it from sticking to the heating element or punch because of its chemical constitution. For this, it is preferable to apply the heating element or the punch directly to the first electrode or the second electrode.
- the method comprises a step 02) which is carried out before step ⁇ 2).
- the pre-assembly obtained at the end of step ⁇ ) is arranged on a support so that the first electrode is applied to the support, the first reinforcing membrane being arranged above the first electrode.
- the preassembly obtained at the end of step ⁇ 2) is superimposed on the preassembly obtained at the end of step ⁇ ) and the assembly is arranged under a press.
- the polymer electrolyte membrane is preferably dimensioned so that its outer edge is inscribed between the inner and outer edges of the first and second reinforcing membranes, which makes it possible to limit the consumption of expensive electrolyte polymer membrane.
- the assembly obtained can be compressed and heated at the electrodes only and all of them, so as to firmly bind the stack of layers together.
- the step of compressing and heating the electrodes may be performed by means of a first compression flange of the assembly which is dimensioned substantially identically to the electrodes.
- the first compression and heating soleplate may be mounted on a piston of a first press.
- the assembly can be compressed and heated at an annular area surrounding the electrodes.
- This annular zone preferably begins internally immediately outside the outer edges of the first and second electrodes. It can extend outward to the outer edges of the first and second reinforcing membranes.
- This compression and heating step can be performed by means of a second compression and heating sole which has an annular shape.
- the second compression and heating soleplate can be mounted on a piston of a second press.
- the compression and heating will be carried out at the level of the central zone and then at the level of the annular zone in order first to make the membranes integral with one another at the active part of the assembly and thus to avoid any movement of the reinforcement membranes, electrodes and the polymer electrolyte membrane between them.
- the step of compressing and heating the electrodes may be followed by a step of joining, for example by heating punches, to a plurality of locations located at the periphery of the reinforced membranes.
- This step can also be initiated at the end of the compression and heating cycle and finish simultaneously or after it.
- the step of joining by heating punches precedes the heating step and compression of the annular zone.
- This securing step prevents the lower reinforcing membrane from flaming and folding on itself, leading to the formation of a double thickness of reinforcing membrane inducing a scrapping of the assembly obtained for nonconformity.
- the dissociation of the compression and heating operations for each of the central zone comprising the first and second electrodes and the polymer electrolyte membrane and the annular zone surrounding the electrodes makes it possible to better adapt the pressure and the temperature exerted on the constituents of the layers. concerned while ensuring the adhesion of each layer (membranes or electrodes or reinforcement) in contact.
- This dissociation is particularly advantageous in the case where the annular zone does not comprise an entire polymer electrolyte membrane layer, that is to say does not include in any place a superposition of the first reinforcing membrane, the polymer electrolyte membrane and the second membrane reinforcement.
- the polymer electrolyte membrane is dimensioned so that the first and second electrodes are inscribed inside the polymer electrolyte membrane.
- the method may further comprise the following steps:
- a support membrane comprising an outer edge or contour and an inner edge or contour delimiting an opening of the membrane, said opening being dimensioned so that the polymer electrolyte membrane can fit into said opening and the first reinforcement membrane and the second reinforcing membrane may cover the entire inner edge of the support membrane,
- the method described above avoids a significant use of polymer electrolyte membrane through the use of a support membrane having an opening in which can be accommodated the polymer electrolyte membrane.
- the support membrane After application of a pressure on the multilayer structure first electrode / first membrane reinforcement / polymer electrolyte membrane / second membrane reinforcement / second electrode, the support membrane ensures a maintenance of this assembly that can be manipulated later.
- the polymer electrolyte membrane is secured to one of the first reinforcing membrane and the second reinforcing membrane and so that it closes the opening of the said reinforcing membrane concerned,
- the first reinforcing membrane and the first electrode are secured to each other prior to step f), the opening of the first reinforcing membrane being closed by the first electrode, and
- the method may also include the following steps:
- the assembly can be made in a limited number of steps since the first electrode and the first reinforcing membrane are preassembled to each other, while the second electrode and the second reinforcing membrane are also pre-assembled. to one another and that the polymer electrolyte membrane is preassembled to one of the reinforcing membranes.
- the support membrane can be supported by a frame, for example metal, which facilitates manipulation by arms manipulation equipped with gripping means, for example magnetic.
- the first reinforcing membrane and the first electrode are secured to each other prior to step f), the opening of the first reinforcing membrane being closed by the first electrode, and
- the method may also include the following steps:
- the assembly can be made in a limited number of steps since the first electrode and the first reinforcing membrane are preassembled to each other, while the second electrode and the second reinforcing membrane are also pre-assembled. one to another, the polymer electrolyte membrane being arranged between the two aforementioned pre-assemblies.
- the polymer electrolyte membrane extends between two opposite edges of the frame whose periphery surrounds the outer edges of the reinforcing membranes.
- the frame can be made of metal material.
- the polymer electrolyte membrane is made of proton conductive polymer.
- it may consist of polysulfone, polyetherketone or polyphenylene on which are grafted conductive groups of protons such as for example sulfonic acid groups. More particularly, polymers consisting of a perfluorinated linear main chain and side chain carrying sulfonic acid groups will be used.
- the first and second reinforcing membranes may be made by way of example of polyvinyl fluoride (PFA), polyethylene terephthalate (PET) or polyethylene naphthalate (PEN).
- PFA polyvinyl fluoride
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- the method comprises a step of producing a peripheral contour cut closed around the polymer electrolyte membrane through an annular zone of the assembly comprising exclusively a stack of the first and second reinforcement membranes or a stack of the first reinforcing membrane, the polymer electrolyte membrane and the second reinforcing membrane.
- the assembly may be subjected to a step consisting in producing orifices in a peripheral zone surrounding at least the electrodes and preferably the polymer electrolyte membrane and the first and second electrodes.
- the orifices do not pass through the polymer electrolyte membrane, which prevents a parasitic circulation of coolant between the membrane and the electrodes since the membrane Polymer electrolyte is confined over its entire circumference inside the reinforcing membranes.
- the orifices may be arranged between said cutout and the polymer electrolyte membrane.
- the method comprises a step of mounting a first bipolar plate on a free face of one of the first electrode and the second electrode.
- the method may include a step of mounting a second bipolar plate on a free face of the other of the first electrode and the second electrode. In this latter configuration, the free faces of the first and second electrodes are covered with a bipolar plate.
- the prior assembly of the assembly with the electrodes outside said assembly that is to say with the reinforcing membranes interposed between the polymer electrolyte membrane and the electrodes, makes it possible to mount at least one bipolar plate or two bipolar plates directly in contact with the free faces of the first and second electrodes, which ensures a gap-free contact between each bipolar plate and an electrode.
- FIG. 1 is a schematic illustration of an electrode-membrane electrode-polymer-electrode assembly obtained with the method according to the invention
- FIG. 2 is a schematic perspective view of a roll with a multilayer structure comprising a polymer electrolyte membrane for a fuel cell;
- FIG. 3 represents the assembly of the different membranes to form an electrode-membrane electrode-polymer-electrode assembly according to FIG. 1;
- FIG. 4 is an illustration of the stack of layers or thicknesses visible in FIG. 3;
- FIG. 5 is a schematic illustration of another electrode-membrane electrode-polymer-electrode assembly obtained with the method according to the invention.
- FIG. 6 shows the assembly of the various membranes to form an electrode-membrane electrode-polymer electrolyte assembly according to FIG.
- Figure 7 is a schematic illustration of the assembly of Figure 5 and bipolar plates covering said assembly.
- FIG. 1 which shows a membrane electrolyte / electrolyte membrane assembly called AME comprising successive elements from bottom to top:
- a first electrode 12 or lower electrode able to form an anode in a fuel cell
- a first membrane 14 or lower reinforcement membrane a polymer electrolyte membrane 16 providing protonic conduction
- a second electrode 20 or upper electrode capable of forming a cathode in a fuel cell.
- FIG. 2 shows a roll 21 comprising a strip of multilayer structure comprising a strip of polymer electrolyte material 16 interposed between a first protective film 22 and a second protective film 24.
- the first electrode 12 and the second electrode 20 are in the form of a membrane having for example a rectangular shape (FIG. 4).
- Each of the first electrode 12 and the second electrode 20 comprises two layers, namely a first layer formed of a carbon fabric on which is deposited a second catalytic layer comprising a binder incorporating a catalyst such as platinum.
- the first diffusion layer may have a thickness of about 200 ⁇ and the second layer may have a thickness of about a few tens of microns.
- the binder may have a chemical constitution similar or identical to that of the polymer electrolyte membrane 16.
- the first electrode 12 and the second electrode 20 are devoid of opening and comprise an outer edge 12a, 20a delimiting the outer periphery or outer contour of the electrode 12, 20.
- the first electrode 12 and the second electrode 20 may have a shape and identical dimensions, so that the first electrode 12 and the second electrode 20 are completely interchangeable with each other.
- each electrode 12, 20 comprises a free face 12b, 20b, and a face 12c, 20c, in contact with the polymer electrolyte membrane 16.
- the free face 12b, 20b is a face of the first layer or diffusion layer and the face 12c, 20c, in contact with the polymer electrolyte membrane is a face of the second layer of the electrode.
- the free faces 12b, 20b are oriented in a direction opposite to the membrane 16 polymer electrolyte.
- the first reinforcing membrane 14 and the second reinforcing membrane 18 each comprise a central opening 14a, 18a delimited by an internal edge 14b, 18b. They also include an outer peripheral edge 14c, 18c, delimiting their periphery or external contour.
- the first reinforcing membrane 14 and the second reinforcing membrane 18 may have a shape and dimensions that are identical so that the first reinforcing membrane 14 and the second reinforcing membrane 18 are completely interchangeable with each other.
- the opening 14a of the first reinforcing membrane 14 and the opening 18a of the second reinforcing membrane 18 and the electrodes 12, 20 are dimensioned so that the first electrode 12 can completely cover the opening 14a of the first membrane reinforcement 14 so as to close it and that the second electrode 20 can completely cover the opening 18a of the second reinforcing membrane 18 so as to close it.
- the polymer electrolyte membrane 16 or proton exchange membrane has a substantially rectangular shape and is devoid of opening. It comprises an outer edge 16a delimiting the outer periphery or outer contour of the membrane 16. As shown in FIGS. 1 and 3, the polymer electrolyte membrane 16 is dimensioned so that the first 12 and second 20 electrodes are inscribed on the In practice, the polymeric electrolyte membrane 16 has a larger area than the surface of the first 12 and second 20 electrodes.
- a support membrane 26 is interposed between the first reinforcing membrane 14 and the second reinforcing membrane 18.
- This support membrane 26 which can also be described as a membrane of transport as will be readily understood later comprises an outer edge 26a forming the outer contour of the support membrane and an inner edge 26b defining a central opening 26c formed in the reinforcing membrane 26.
- the outer edge 26a of the reinforcing membrane 26 is clamped between two metal parts 28a, 28b forming a frame.
- the support membrane 26 can be easily manipulated via the two rigid frames fixed to each other by any appropriate means, for example by screwing.
- the opening 26c of the support membrane 26 is dimensioned so that the polymer electrolyte membrane 16 can fit into said opening 26c and that the outer edge 14c of the first reinforcing membrane 14 and the outer edge 18c of the second reinforcing membrane 18 can cover the entire inner edge 26b of the support membrane 26. In this way, an annular space is provided to the assembly between the outer edge 16a of the polymer electrolyte membrane 16 and the inner edge 26b of the support membrane 26.
- a first assembly may consist of pre-assembly and joining of the first electrode 12 with the first reinforcing membrane 14, the free face 12b of the first electrode 12 being arranged opposite the first reinforcing membrane 14.
- a second set may also be constituted by the preassembly and the joining of the polymer electrolyte membrane 16 with the second reinforcing membrane 18 and the second electrode 20.
- the second set can be obtained as follows. Firstly, the second reinforcing membrane 18 is disposed on a support of an assembly station which can support the roll 22 of polymer electrolyte membrane 16. The polymer electrolyte membrane 16 is separated from the first 22 and second 24 protective films and pulled until the opening of the second reinforcing membrane 18 is covered. The possible folds of the polymer electrolyte membrane 16 are then removed.
- This bonding step can be performed by laser welding of a first closed contour of the polymer electrolyte membrane 16 on the inner edge 18b of the second reinforcing membrane 18 and then by laser welding of a second closed contour of the polymer electrolyte membrane. 16 on the inner edge 18b of the second reinforcing membrane 18, the second contour surrounding the first contour.
- the power of the laser during the production of the first welding contour is such that it makes it possible to secure the polymer electrolyte membrane 16 to the second reinforcing membrane 18 without cutting it.
- the realization of the second contour is sufficient to allow a welding of the polymer electrolyte membrane 16 on the second reinforcing membrane 18 while allowing cutting of the electrolyte membrane 16 alone, that is to say without cutting the second reinforcing membrane. It should be noted that one could also perform a single closed contour to simultaneously perform the welding of the electrolyte membrane with the reinforcing membrane and the cutting of the polymer electrolyte membrane.
- the second electrode 20 is assembled on the opening of the second reinforcing membrane 18 so that the second electrode 20 closes the opening 18a of the second reinforcing membrane 18, the free face 20b of the second electrode 20 facing away from the polymer electrolyte membrane 16.
- the first assembly is then deposited on the support 30, the free face 12b of the first electrode 12 being in contact with the support 20.
- the frame 28a, 28b supporting the support membrane 26 is arranged above the first reinforcing membrane 14 so that the opening 26c of the support membrane 26 is closed below by the first assembly, the inner edge 26b of the support membrane 26 being applied to all the outer edge 14c of the first reinforcing membrane 14.
- the second assembly is then applied above the frame 28a, 28b so that the polymer electrolyte membrane 16 is housed in the opening 26c of the support membrane 26, the outer edge 18c of the second reinforcing membrane 18 which is applied over the entire inner edge 26b of the support membrane 26.
- the aforementioned support 30 may be the static support of a press. After obtaining the assembly as shown in FIG. 3, one or more pressing and heating operations are carried out for locally bonding the faces in contact with the membranes 14, 16, 18 and the electrodes 12, 20.
- a first pressing operation and heating is performed at the electrodes 12, 20 only and all of them.
- This first pressing and heating zone is represented in FIG. 4 by dashed hatching and also represented in FIG. 1 by reference Z1.
- This first operation is followed by a second pressing and heating operation at an annular zone surrounding the electrodes 12, 20, this annular zone being between the inner edge 26b of the support membrane 26 and the outer edges 12a, 20a of the first 12 and second 20 electrodes.
- the annular zone begins internally immediately outside the outer edges 12a, 20a of the first 12 and second 20 electrodes.
- This second pressing and heating zone is represented in FIG. 4 by hatching in solid lines and also represented in FIG. 1 by the reference Z2.
- the annular zone extends outwardly to the outer edges 14c, 18c of the first 14 and second 18 reinforcing membranes.
- the aforementioned pressing and heating operations can be carried out by means of two separate presses or else by means of a single press.
- the use of two presses, however, allows better control of the temperature and pressure exerted on each of the areas considered.
- the frame associated with a support membrane makes it possible to transport the assembly AME of a first press to a second press. It also allows the transport of the assembly to a cutting station for example laser.
- the cutting consists in producing a closed contour peripheral cutout 32 surrounding the polymer electrolyte membrane 16 through an annular zone of the assembly comprising exclusively a stack of the first 14 and second 18 reinforcement membranes (FIG. 1). It is also possible to make orifices 34 between said cutout 32 and the outer edge 16a of the polymer electrolyte membrane, these orifices 34 being intended for the passage of cooling liquid and pure gases (h and O2).
- the invention also relates to a method in which the assembly of FIG. 3 is made with the polymer electrolyte membrane 16 preassembled to the first reinforcing membrane 14 and no longer to the second reinforcing membrane 18.
- the polymer electrolyte membrane 16 could extend to the inner edge 26b of the support membrane 26.
- the peripheral cut 32 as well as the orifices 34 are then made in a zone annular surrounding the electrodes and through a thickness comprising the first reinforcing membrane 14, the polymer electrolyte membrane 16 and the second reinforcing membrane 18.
- FIG. 5 represents a second assembly 11 which can be produced with the method according to the invention.
- the stack of the different membranes is identical to that described with reference to FIG.
- the assembly shown in this figure does not perform an "anti-wicking" function, that is to say in which the polymer electrolyte membrane is not confined between the first 14 and second 18 membrane reinforcements as explained with reference in Figure 1 but extends everywhere between the first reinforcing membrane 14 and the second reinforcing membrane 18.
- the polymer electrolyte membrane 16 differs from the assembly described with reference to Figure 1.
- the first assembly and the second assembly are obtained as described above with reference to FIG. 3.
- the first assembly is then deposited on the support 30, the free face 12b of the first electrode 12 being in contact with the support 20 ( Figure 6).
- a metal frame 36 formed of two parts 36a, 36b, preferably rectangular, clamps the outer edge 16a of a polymer electrolyte membrane 16.
- the frame 36a, 36b supporting the polymer electrolyte membrane 26 is arranged above the first reinforcing membrane 14 so that the polymer electrolyte membrane 16 closes the opening 14a of the first reinforcing membrane 14 more effectively.
- the second assembly is then applied above the frame 36a, 36b so that the second reinforcing membrane 18 comes to apply. on the polymer electrolyte membrane 16.
- the pressing and heating steps are similar to what has been described above with reference to FIGS. 3 and 4.
- the annular zone Z2 comprises at all locations thereof a stack of the first reinforcing membrane 12, the polymer electrolyte membrane 16 and the second reinforcing membrane 18. After pressing the zones Z1 and Z2, a cutting of the similar to what has been described previously.
- the step of compressing and heating the electrodes may be followed by a step of joining, for example by heating punches, to a plurality of locations 38 located at the periphery of the reinforcing membranes 14, 18.
- This step may also be be initiated at the end of the compression and heating cycle and finish simultaneously or after it.
- the step of joining by heating punches precedes the heating step and compression of the annular zone.
- This securing step prevents the lower reinforcing membrane 14 from flaring and folding back on itself, leading to the formation of a double thickness of reinforcing membrane 14 inducing discarding for lack of conformity of the assembly 10 or of the assembly 1 1 obtained with the installation 1 described above.
- FIG. 7 represents the assembly 1 1 of FIG.
- first bipolar plate P1 is mounted on the free face 12b of the first electrode 12 and a second bipolar plate P2 is mounted on the face free 20b of the second electrode 20.
- the first bipolar plate P1 and the second bipolar plate P2 each comprise grooves which are closed by the free faces 12b, 20b of the first and second electrodes 12, 20 so as to define the circulation channels C of gas according to the operating principle of a fuel cell.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1753908A FR3066047B1 (fr) | 2017-05-03 | 2017-05-03 | Procede d'assemblage pour pile a combustible |
| PCT/FR2018/051108 WO2018203007A1 (fr) | 2017-05-03 | 2018-05-03 | Procede d'assemblage pour pile a combustible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3619763A1 true EP3619763A1 (fr) | 2020-03-11 |
Family
ID=59381469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18728925.1A Withdrawn EP3619763A1 (fr) | 2017-05-03 | 2018-05-03 | Procede d'assemblage pour pile a combustible |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20200203742A1 (fr) |
| EP (1) | EP3619763A1 (fr) |
| JP (1) | JP2020518980A (fr) |
| CA (1) | CA3062030A1 (fr) |
| FR (1) | FR3066047B1 (fr) |
| WO (1) | WO2018203007A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240072270A1 (en) * | 2022-08-26 | 2024-02-29 | Plug Power Inc. | System for supporting a fuel cell stack |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063254A1 (de) * | 2010-12-16 | 2012-06-21 | FuMA-Tech Gesellschaft für funktionelle Membranen und Anlagentechnologie mbH | Membran-Elektroden-Anordnung mit zwei Deckschichten |
| FR2995145B1 (fr) * | 2012-09-03 | 2014-12-26 | Commissariat Energie Atomique | Procede de fabrication d'une pile a combustible incluant un assemblage electrode/membrane |
| FR3014247B1 (fr) * | 2013-11-29 | 2016-01-01 | Commissariat Energie Atomique | Procede de fabrication d'un assemblage membrane/electrodes comportant des renforts |
| FR3024593B1 (fr) * | 2014-07-29 | 2016-09-02 | Commissariat Energie Atomique | Reacteur electrochimique equilibrant les pertes de charge des zones d'homogeneisation cathode/anode |
-
2017
- 2017-05-03 FR FR1753908A patent/FR3066047B1/fr active Active
-
2018
- 2018-05-03 US US16/610,589 patent/US20200203742A1/en not_active Abandoned
- 2018-05-03 EP EP18728925.1A patent/EP3619763A1/fr not_active Withdrawn
- 2018-05-03 WO PCT/FR2018/051108 patent/WO2018203007A1/fr not_active Ceased
- 2018-05-03 JP JP2019560271A patent/JP2020518980A/ja active Pending
- 2018-05-03 CA CA3062030A patent/CA3062030A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018203007A1 (fr) | 2018-11-08 |
| US20200203742A1 (en) | 2020-06-25 |
| FR3066047A1 (fr) | 2018-11-09 |
| CA3062030A1 (fr) | 2018-11-08 |
| FR3066047B1 (fr) | 2022-02-04 |
| JP2020518980A (ja) | 2020-06-25 |
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