WO2019086939A1 - Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité - Google Patents
Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité Download PDFInfo
- Publication number
- WO2019086939A1 WO2019086939A1 PCT/IB2017/056925 IB2017056925W WO2019086939A1 WO 2019086939 A1 WO2019086939 A1 WO 2019086939A1 IB 2017056925 W IB2017056925 W IB 2017056925W WO 2019086939 A1 WO2019086939 A1 WO 2019086939A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- substrate
- compound
- oxygen
- tio
- Prior art date
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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
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0215—Glass; Ceramic materials
-
- 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
- H01M8/0206—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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
- H01M8/021—Alloys based on iron
-
- 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
-
- 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
Definitions
- Bipolar plate for assembling the elements of a fuel cell unit and its manufacturing process, comprising a fuel cell unit and a fuel cell comprising the same
- the present invention relates to a method of manufacturing a strip or metal sheet and the strip or sheet thus produced.
- PEMFC type fuel cells that is to say proton exchange membrane
- battery units each consisting of an anode assembly / electrolyte / cathode, also called MEA ("membrane electrode assembly” in English).
- MEA membrane electrode assembly
- GDL gas diffusion layer
- the bipolar plates assemble together the elements of the battery unit. They also define fluid circulation channels, distribute gas, coolant and evacuate the water generated in the cell which allows to control the moisture of the proton exchange membrane. They also have the function of collecting the current generated at the electrodes.
- ICR Interfacial Contact Resistance
- WO-A-2016/151356 and WO-A-2016/151358 have proposed a method of manufacturing a metal strip or sheet particularly suitable for the manufacture of bipolar plates, comprising the provision of a substrate made of stainless steel and the deposition of a chromium nitride layer on the substrate by physical vapor deposition (PVD) in a deposition installation comprising a vacuum-settable deposition chamber and also being fed with a mixture of inert gas such as argon and nitrogen.
- the enclosure also comprises a chromium target disposed above the upper face (for example) of the substrate, the substrate traveling through the deposition chamber in a longitudinal direction. A suitable potential difference is applied between the target and the substrate.
- the deposit enclosure comprises a zone of deposit of length strictly less than the length of the deposit chamber, taken in the longitudinal direction and at least a first "forbidden zone", adjacent to the deposit zone in the longitudinal direction, and in which, during the deposit, the Chromium nitride is deposited on the substrate only in the deposition zone. There is no chromium nitride deposition on the substrate in the first "forbidden zone”.
- the first "forbidden zone” may be located downstream of the target on the path of the substrate.
- the chromium deposition rate on the substrate may be greater than or equal to a predetermined threshold in the deposition zone, downstream of the target.
- the deposition chamber comprises a downstream cache, impermeable to chromium atoms preventing the projection of chromium nitride on the substrate in the first "forbidden zone" and allowing the projection of chromium nitride on the substrate in the deposition zone .
- the downstream mask is typically interposed on the trajectory of the chromium atoms projected towards the first zone, and is arranged in the deposition chamber so as to prevent the deposition on the substrate of the chromium atoms resulting from the target whose rate of deposition on the substrate would be strictly less than the predetermined threshold.
- the deposition chamber may furthermore comprise a second "forbidden zone" in which there is no chromium nitride deposit on the substrate during the deposition step, the second "forbidden zone” being adjacent to the deposition zone. deposit zone so that the first "forbidden zone” (downstream zone) and the second “prohibited zone” (upstream zone) frame the deposit zone in the longitudinal direction of travel of the strip or sheet.
- the enclosure then comprises, in addition, an upstream cache, impervious to chromium atoms, said upstream cache being disposed in the enclosure and interposed on the trajectory of chromium atoms projected towards the second "prohibited zone" to from the target, so as to allow the projection of chromium nitride on the substrate in the deposition zone and to prevent the projection of chromium nitride on the substrate in the second "forbidden zone".
- the deposition rate of the chromium atoms on the substrate during deposition is preferably greater than or equal to the predetermined threshold
- the method further comprises, prior to the deposition step, a step of determining the predetermined threshold, for a given deposition installation, by calibration, the predetermined threshold corresponding to the minimum deposition rate for which a coating layer is obtained. having a desired contact resistance.
- the strip or metal sheet is made of stainless steel, its thickness is typically of the order of 0.1 mm but can be even lower, and it initially comprises, on its surface, a passive oxidation layer which is completely eliminated at less in the areas to be coated with the coating layer so that in these areas no passive layer remains at the beginning of the deposition step.
- a deposit on both sides of the strip or sheet is possible if the enclosure has two chrome targets arranged on either side of the strip or sheet and away from each other on the course of the tape or sheet, and the cache or caches associated with each target.
- a strip or metal sheet comprising a stainless steel substrate and a coating layer on at least one of its faces, based on chromium nitride, the coating layer optionally comprising oxygen, said layer of coating being obtained by physical vapor deposition (PVD).
- PVD physical vapor deposition
- the coating layer comprises, on its surface, a surface area with an atomic oxygen content strictly below its atomic nitrogen content.
- the surface area has a height less than or equal to 15% of the total thickness of the coating layer.
- the coating layer comprises, at the interface with the substrate, an interface zone comprising an atomic oxygen content strictly below its atomic nitrogen content. Typically, it has a height less than or equal to 15% of the total thickness of the coating layer;
- the coating layer can thus have a contact resistance (ICR) of less than 10 ⁇ m. cm 2 to 100 N.cm -2 .
- the coating layer is formed directly on the stainless steel substrate without interposition of a passive layer between the coating layer and the stainless steel of the substrate.
- the coating layer is textured, and in particular has an epitaxial relationship with the stainless steel of the substrate. This epitaxy must remain present after the shaping of the plate. The differences in mechanical properties between the substrate and the coating make this condition maintained, at the cost of localized ruptures of the CrN layer, which are not really troublesome.
- the passivation layer is reconstituted and prevents significant corrosion of the plate, especially since the surrounding medium is relatively acidic (pH of the order of 4 or 5).
- bipolar fuel cell plate comprising at least one plate obtained by deformation of a sheet or blank cut from a strip as aforesaid.
- a plate coated with a CrN-based coating layer is prepared on only one of its faces.
- PVD target which overhangs the path of travel of the strip or sheet, above the face to be coated.
- CrN CrN which is deposited on the opposite side of the strip or sheet scrolling in the treatment chamber, which is not a problem in itself.
- the CrN is not the most efficient material for forming the textured coating layer, and there is little margin for reliably obtaining a lower contact resistance in all parts of the plate. at the prescribed threshold of 10 mg / cm 2 to 100 N / cm 2 .
- a single-sided coating of the plate is adequate if, to achieve the assembly of the bipolar plates, the plates are welded to each other after their deformation, the welding being effected on the uncoated faces, because the material welding contributes to the electrical conductivity of the whole. But if the assembly is carried out by another means, there is a degradation of the contact resistance at the areas where the metal was exposed in the shaping of the plates by causing the reconstitution of the passivation layer . The performance of the assembly in terms of electrical conductivity are therefore degraded.
- the object of the invention is to provide a strip or metal sheet for the constitution of a bipolar fuel cell element plate solving the above problems.
- the subject of the invention is a bipolar plate for assembling the elements of a fuel cell unit constituted by a stainless steel substrate coated on at least one of its two faces by a layer of an electrically conductive material, characterized in that said material is a bivalent or trivalent Ti compound or a mixture of such compounds, and in that said layer contains at most an amount of oxygen at%, measured by X-ray photoelectron spectrometry (XPS) on the upper 10 nm of said layer, which does not exceed 1.5 times the content of at% oxygen which, based on the content of at% of Ti measured, would correspond to a coating which would be entirely composed of TiO.
- XPS X-ray photoelectron spectrometry
- Said Ti compound may be a divalent Ti compound selected from TiN,
- the two faces of said plate may each be coated with a layer of at least one bivalent or trivalent Ti compound, each of said layers containing at most a quantity of oxygen, measured by X-ray photoelectron spectrometry (XPS) over the upper 10 nm of said layer, which does not exceed 1.5 times the content of at% oxygen which, based on the content of at% of Ti measured, would correspond to a coating which would be composed entirely of TiO.
- XPS X-ray photoelectron spectrometry
- One side of the plate may be coated with a bivalent or trivalent Ti compound or a mixture of such compounds, and the other side may be coated with CrN.
- the invention also relates to a method for manufacturing a bipolar plate for assembling the elements of a fuel cell unit, constituted by a stainless steel substrate coated on at least one of its two faces by an electrically conductive material, characterized in that said material is a bivalent or trivalent Ti compound or a mixture of such compounds, in that said layer contains at most a quantity of oxygen at%, measured by spectrometry X-ray photoelectron (XPS) on the upper 10 nm of said layer, which does not exceed 1.5 times the content of at% oxygen which, according to the content of at% of Ti measured, corresponds to a coating which would be entirely composed of TiO, and in that:
- XPS spectrometry X-ray photoelectron
- a stainless steel substrate is provided in the form of a strip or a sheet;
- At least one of the faces of the plate is deposited a layer of a compound or a mixture of bivalent or trivalent Ti compounds by physical vapor deposition (PVD) in a deposition installation comprising at least one deposition chamber, means for scrolling the substrate inside said enclosure according to a longitudinal direction, means for limiting or controlling the amount of air and oxygen introduced into the chamber, and at least one Ti target;
- PVD physical vapor deposition
- said substrate coated with bivalent or trivalent Ti compound is cut and shaped to give it the desired shape and dimensions and to obtain a bipolar fuel cell plate.
- Said Ti compound may be a divalent Ti compound selected from TiN, TiO and mixtures thereof.
- the chamber may also comprise at least one forbidden zone on at least one face of the substrate, in which no deposit of bivalent or trivalent Ti compound is carried out on the substrate.
- the at least one forbidden zone can be obtained by the interposition of at least one cover impermeable to the Ti atoms arranged on the path of the Ti atoms between a target and the substrate.
- One of the faces of the substrate may be coated with a bivalent or trivalent Ti compound or a mixture of such compounds, and the other side coated with PVD-deposited CrN from a Cr target.
- the invention also relates to a fuel cell unit PEMFC type, composed of an anode / electrolyte / cathode assembly, the anode and the cathode being formed by bipolar plates comprising a stainless steel substrate coated on at least one of its faces by an electrically conductive material, characterized in that at least one of the anode and the cathode is constituted by a bipolar plate of the above type.
- the invention also relates to a fuel cell comprising bipolar plate units for assembling the elements of its units, characterized in that at least one of said units is a unit of the above type.
- the invention is based first of all on the choice of bivalent or trivalent titanium compounds, in particular TiN but also TiO as coating materials for the strips or sheets, and on their deposition by PVD, on one or, preferably, on both sides of the strip or sheet.
- TiN would indeed be a more suitable material than CrN because it is capable of obtaining ICR of less than 5 ⁇ m. cm 2 to 100 N.cm -2 .
- the strip or sheet is coated with a material essentially based on bivalent or trivalent Ti, which is, for example, TiN, TiO or a mixture of these two Ti compounds. bivalent. It turns out, in view of the experiments carried out by the inventors, that this is the bivalent or trivalent character of the Ti compounds deposited on the web or sheet which is fundamental to the performance of the bipolar plate, and that TiN, TiO and mixtures thereof are substantially equally equally suitable for providing low contact resistance, typically from less than 5 m-cm 2 to 100 N-cm 2, trivalent Ti conductive compounds such as Ti 2 O 3 are also suitable.
- Tetravalent titanium compounds such as TiO 2 are, on the contrary, to be avoided in this coating, at least over the first 10 nm of its upper layer, which are the most important for ensuring that the strip or sheet has a contact resistance. suitable.
- the bivalent or trivalent Ti-based coating must comprise, on this superficial thickness of 10 nm, an overall content of at% oxygen% (that is to say expressed in percentages atomic level) which must not exceed by more than one-half (ie not more than 1, 5 times) the oxygen content measured in at% which, in view of the measured Ti content, also in at% "would correspond to to a coating which would be integrally formed of TiO, on the basis of an analysis of the coating carried out by the so-called "XPS" method of X-ray photoelectron spectroscopy.
- at% oxygen% that is to say expressed in percentages atomic level
- TiN is a high performance material in terms of contact resistance. It has been found that the method of deposition of CrN by PVD, carried out under conditions comparable to those described in the prior art documents cited in the introduction, was also suitable for deposition of TiN. However, it is necessary that the surface of the metal support is very well cleaned before the deposition of the TiN, and it is advisable to clean it by a conventional method of chemical etching adapted to the material used. For stainless steel, it will thus be preferable to use an argon plasma etching.
- the coating deposit in the downstream part may be accompanied by a parasitic coating deposit on the face which had already been coated in the upstream part of the enclosure. the enclosure and which is likely to degrade its properties.
- the strip or sheet is coated on both sides, it is preferred, but not mandatory, to place two targets in Ti on either side of the strip or sheet, and substantially facing one from the other and at equal distances from the strip or sheet.
- the caches defining the prohibited areas and the areas authorized for the deposition of the layers on each face are also arranged symmetrically with respect to the strip or sheet. In this way, both faces are coated substantially at the same time and with the same parameters. If parasitic deposits occur, they occur in a very similar way on both sides, which minimizes their influence on the final properties of the coated material, the two faces of which are thus coated in substantially identical ways.
- TiN a reaction of Ti with the oxygen present in the chamber results in the formation of Ti oxides of various valencies, namely TiO and / or Ti 2 O 3 and / or TiO 2 .
- the formation of pure Ti0 2 is to be avoided because it is an insulating phase.
- the TiO is a conductive phase in the same way as TiN, and its presence within the TiN layer, or on its surface, or at the substrate / TiN interface does not lead to deterioration of the contact resistance. .
- TiO may even be the exclusive or quasi-exclusive component of the conductive phase, which essentially consists of bivalent Ti (TiN, TiO) as opposed to non-conductive tetravalent Ti compounds such as TiO 2.
- Trivalent Ti compounds such as Ti 2 O 3 are also suitable. This is not the case when it is desired to deposit CrN, since the Cr oxides that can be formed are not conductive and are in any case harmful to the conductivity of the deposit, and therefore to the contact resistance.
- Another advantage of a biface deposit is that the manufacturer of the fuel cell units can minimize or eliminate the step of welding the microchannels together. Also, this makes it possible to multiply the number of deposit cells and to increase the installed power of the production tool. The production costs for a given quantity of units are therefore reduced.
- a precaution to be taken is to avoid a too significant amount of pure TiO 2 is formed.
- thermodynamics and the kinetics of the formation of the Ti oxides make that the TiO is formed in a privileged way, and that the pure TiO 2 is only formed significantly if the quantity of oxygen available is sufficient for this purpose, in relation with the temperature at which the deposit takes place.
- Deposition analysis can be performed by any suitable method that would give a direct or indirect indication of the chemical nature of the deposit and the excessive presence of tetravalent Ti as pure TiO 2 .
- XPS X-ray photoelectron spectrometry
- TiN, TiO, Ti ( NO), Ti 2 0 3 , Ti0 2 X-ray photoelectron spectrometry
- the analysis of the first 10 nm of the outer surface of the layer is sufficient to determine whether the coating would have the necessary qualities, as on the one hand are the most important for obtaining a good contact resistance, and secondly those are those for which the pollution by oxygen leading to excessive oxidation of Ti would be maximum. From routine experiments, it will then be easy for the operator to determine which plant settings he has available to achieve an adequate composition of TiN layers, or TiO, or mixtures of these two compounds. (or, in general, of bivalent or trivalent Ti conductive compounds), and to avoid that TiO 2 (or other tetravalent and non-bivalent or trivalent Ti compounds) are present in excessive amounts.
- the enclosure In order to obtain a sufficiently small amount of TiO 2 in the coating, the enclosure must be placed or the deposition under reduced pressure must take place for a time sufficient for the air and the water vapor contained therein. origin are removed in sufficient quantities. It is also necessary, during the stay of the strip or sheet in this chamber, that the air inlets are minimized so that the deposition atmosphere is well controlled. In practice, a pressure of 10 -4 mbar or less, when no neutral gas and / or nitrogen is added, is a sign that this atmosphere will not be sufficiently oxidizing for excessive TiO 2 formation.
- the target (s) in Ti are not located too close to the entrance of the band moving in the enclosure, so that the oxygen and water adsorbed have the time to be evacuated by the pumping facility before the portion of the band from which they are derived does not reach the formation zone of the TiN / TiO coating, optionally also containing trivalent Ti compounds such as Ti 2 O 3 .
- the reactive gas can be a nitrogen / oxygen mixture whose composition and the flow rate will be adjusted by the man of craft with the power of sputtering and the geometry of its installation, so as not to observe tetravalent titanium on the surface of its deposit as described above.
- the installation comprises all that is necessary and customary for producing a PVD coating deposit on a moving substrate in a controlled atmosphere chamber.
- means for moving the substrate inside the enclosure in a longitudinal direction if the substrate is a moving strip means imposing a suitable potential difference between the targets and the substrate, etc.
- the mechanical properties of the TiN and the TiO are not fundamentally different from those of the CrN, so that they do not react more adversely than the CrN to the cuts and the shaping of the strips or sheets for the production of the plates. They also develop from the surface of the substrate with a remarkable epitaxy, forming columns to the right of the grains of the substrate. This epitaxy can be observed on X-ray diffraction examinations by transmission electron microscopy: there is a very good coincidence of the diffraction spots due to TiN and TiO with those due to the grains of the substrate.
- the stainless steel substrate is polycrystalline, with grains that typically do not exceed 50 ⁇ , preferably have a size between 10 and 30 ⁇ .
- both sides of the sheet or web can be coated with two different bivalent Ti materials, both of which would meet the requirements of the invention (for example, one side has a substantially composed of TiN and the other face has a coating consisting essentially of TiO, or both sides are coated with a TiN-TiO mixture but in different proportions on each side ).
- two different bivalent Ti materials for example, one side has a substantially composed of TiN and the other face has a coating consisting essentially of TiO, or both sides are coated with a TiN-TiO mixture but in different proportions on each side .
- Another alternative is to coat one side of the substrate with a coating based on divalent Ti compounds (typically TiN, TiO or mixtures thereof) or trivalent and to coat the other side with CrN as it is known, for example from the manner described in WO-A-2016/151356 and WO-A-2016/151358.
- divalent Ti compounds typically TiN, TiO or mixtures thereof
- trivalent typically TiN, TiO or mixtures thereof
- the two enclosures are connected to each other (with a sufficient seal between them so that their atmospheres do not influence each other too much) and that the substrate (in scrolling or not ) is not exposed to free air during its transfer, which could lead to pollution of its surfaces which would disturb the deposit in the second enclosure; again, caches can be used in each enclosure to limit the risk of spurious deposits on the face of the substrate that should not be concerned.
- the two faces are made identifiable in one way or another by the operator in view of the correct assembly of the fuel cell membrane.
- the strip or sheet is conditioned as is usual to obtain a bipolar plate of shape and dimensions adapted to the use that will be made, by cutting and shaping, using conventional methods for this purpose, such as cold deformation, in particular by stamping.
- the invention is applicable to the coating of any stainless steel known to be suitable for use as a substrate for bipolar plates, in particular because of its mechanical properties governing its ability to be adequately shaped. Mention may be made, in a non-limiting manner, of stainless steel 1 .4404 (AISI 316L), 1 .4306 (AISI 304L), 1 .4510 (AISI 409) or 1 .4509 (AISI 441), thus both austenitic stainless steels. than ferritic stainless steels.
- the invention also relates to a fuel cell of the PEMFC type, conventionally comprising bipolar plates in order to assemble together units of the battery, at least one of said plates, and preferably all said plates, being constituted according to the present invention.
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- Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780097305.0A CN111542957A (zh) | 2017-11-06 | 2017-11-06 | 装配燃料电池单元元件用双极板及生产方法,含该双极板的燃料电池单元,及含该单元的燃料电池 |
EP17808586.6A EP3707769A1 (fr) | 2017-11-06 | 2017-11-06 | Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité |
PCT/IB2017/056925 WO2019086939A1 (fr) | 2017-11-06 | 2017-11-06 | Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité |
KR1020207016302A KR20200092977A (ko) | 2017-11-06 | 2017-11-06 | 연료 전지 유닛의 요소를 조립하기 위한 양극판 및 양극판을 제조하기 위한 방법, 양극판을 포함하는 연료 전지 유닛 및 상기 유닛을 포함하는 연료 전지 |
BR112020008942-7A BR112020008942A2 (pt) | 2017-11-06 | 2017-11-06 | placa bipolar para montagem dos elementos de uma unidade de célula de combustível, método para fabricação de uma placa bipolar para montagem dos elementos de uma unidade de célula de combustível, unidade para célula de combustível do tipo pemfc e célula de combustível |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2017/056925 WO2019086939A1 (fr) | 2017-11-06 | 2017-11-06 | Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019086939A1 true WO2019086939A1 (fr) | 2019-05-09 |
Family
ID=60569965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2017/056925 WO2019086939A1 (fr) | 2017-11-06 | 2017-11-06 | Plaque bipolaire pour l'assemblage des éléments d'une unité de pile à combustible et son procédé de fabrication, unité de pile à combustible la comportant et pile à combustible comportant cette unité |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3707769A1 (fr) |
KR (1) | KR20200092977A (fr) |
CN (1) | CN111542957A (fr) |
BR (1) | BR112020008942A2 (fr) |
WO (1) | WO2019086939A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1369941A2 (fr) * | 2002-05-16 | 2003-12-10 | Nippon Steel Corporation | Structure d'interface de contact à faible résistance entre le séparateur et le matériau carboné d'une pile à combustible, le séparateur et le matériau carboné utilisés dans celle-ci et méthode de fabrication |
WO2016151356A1 (fr) | 2015-03-20 | 2016-09-29 | Aperam | Bande métallique, plaque bipolaire et procédé de fabrication associé |
WO2016151358A1 (fr) | 2015-03-20 | 2016-09-29 | Aperam | Bande ou feuille métallique présentant un revêtement à base de nitrure de chrome, plaque bipolaire et procédé de fabrication associé |
US20160305011A1 (en) * | 2015-04-15 | 2016-10-20 | Treadstone Technologies, Inc. | Method of metallic component surface modification for electrochemical applications |
KR20170106570A (ko) * | 2016-03-11 | 2017-09-21 | 재단법인 하이브리드 인터페이스기반 미래소재 연구단 | PEALD를 이용한 PEMFC의 분리판용 TiN 박막의 제조방법 |
-
2017
- 2017-11-06 EP EP17808586.6A patent/EP3707769A1/fr not_active Withdrawn
- 2017-11-06 BR BR112020008942-7A patent/BR112020008942A2/pt not_active Application Discontinuation
- 2017-11-06 KR KR1020207016302A patent/KR20200092977A/ko unknown
- 2017-11-06 WO PCT/IB2017/056925 patent/WO2019086939A1/fr unknown
- 2017-11-06 CN CN201780097305.0A patent/CN111542957A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369941A2 (fr) * | 2002-05-16 | 2003-12-10 | Nippon Steel Corporation | Structure d'interface de contact à faible résistance entre le séparateur et le matériau carboné d'une pile à combustible, le séparateur et le matériau carboné utilisés dans celle-ci et méthode de fabrication |
WO2016151356A1 (fr) | 2015-03-20 | 2016-09-29 | Aperam | Bande métallique, plaque bipolaire et procédé de fabrication associé |
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KR20200092977A (ko) | 2020-08-04 |
CN111542957A (zh) | 2020-08-14 |
BR112020008942A2 (pt) | 2020-10-20 |
EP3707769A1 (fr) | 2020-09-16 |
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