EP3888168A1 - Interconnector for reactor for electrolysis or co-electrolysis of water (soec) or fuel cell (soefc), associated manufacturing process - Google Patents
Interconnector for reactor for electrolysis or co-electrolysis of water (soec) or fuel cell (soefc), associated manufacturing processInfo
- Publication number
- EP3888168A1 EP3888168A1 EP19808853.6A EP19808853A EP3888168A1 EP 3888168 A1 EP3888168 A1 EP 3888168A1 EP 19808853 A EP19808853 A EP 19808853A EP 3888168 A1 EP3888168 A1 EP 3888168A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- interconnector
- electrolysis
- electrical
- manufacturing
- fluidic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
- H01M8/021—Alloys based on iron
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
- C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
- H01M8/2432—Grouping of unit cells of planar configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
-
- 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
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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 the field of solid oxide stacks (SOEC / SOFC), for the production of solid oxide fuel cells (SOFC, acronym for “Solid Oxide Fuel Cell”), but also for the production of reactors electrolysis of water at high temperature (EHT, or EVHT for electrolysis of water vapor at high temperature to produce hydrogen d'eau from water vapor H2O, or HTE acronym for High Temperature Electrolysis, or also HTSE English acronym for High Temperature Steam Electrolysis) also with solid oxides (SOEC, English acronym for “Solid Oxide Electrolyser Cell”), and for high temperature co-electrolysis of water and another gas chosen from dioxide carbon dioxide or nitrogen dioxide NO2.
- SOEC solid oxide stacks
- the invention relates more particularly to a new embodiment of the electrical and fluidic interconnectors for the distribution of electrical current and gases within a high temperature water electrolysis or co-electrolysis reactor (EHT) of SOEC type, or a SOFC type fuel cell.
- EHT high temperature water electrolysis or co-electrolysis reactor
- the invention applies equally well to a co-electrolysis of water and another gas chosen from carbon dioxide CO2 or NO2 nitrogen dioxide, than to a SOFC fuel cell.
- the invention applies to a SOFC fuel cell using as fuel either hydrogen or hydrocarbon, for example methane CH4.
- electrolysis To carry out the electrolysis of water, it is advantageous to carry it out at high temperature, typically between 600 and 950 ° C., since part of the energy necessary for the reaction can be provided by heat which is less expensive than electricity and activation of the reaction is more efficient at high temperatures and does not require a catalyst.
- electrolyser of the SOEC type (English acronym for "Solid Oxide Electrolyser Cell”), consisting of a stack of elementary patterns each comprising a solid oxide electrolysis cell, consisting three anode / electrolyte / cathode layers superposed one on the other, and interconnection plates of metal alloys also called bipolar plates, or interconnects.
- SOEC Solid Oxide Electrolyser Cell
- the interconnects have the function of ensuring both the passage of electric current and the circulation of gases in the vicinity of each cell (water vapor injected, hydrogen and oxygen extracted in an EHT electrolyser; air and hydrogen injected and water extracted in an SOFC cell) and to separate the anode and cathode compartments which are the gas circulation compartments on the side of the anodes and cathodes respectively of the cells.
- water vapor H2O is injected into the cathode compartment.
- each elementary electrolysis cell 1 is formed by a cathode 2 and an anode 4, placed on either side of a solid electrolyte 3 generally in the form of a membrane.
- the two electrodes (cathode and anode) 2,4 are electrical conductors, made of porous material, and the electrolyte 3 is gas tight, electronic insulator and ionic conductor.
- the electrolyte can in particular be an anionic conductor, more precisely an anionic conductor of the O 2 and G ions, the electrolyser is then called an anionic electrolyser.
- the electrochemical reactions take place at the interface between each of the electronic conductors and the ionic conductor.
- the electrolyte 3 interposed between the two electrodes 2, 4 is the place of migration of the O 2 ′ ions under the effect of the electric field created by the potential difference imposed between the anode 4 and cathode 2.
- the water vapor entering the cathode can be accompanied by hydrogen 3 ⁇ 4 and the hydrogen produced and recovered at the outlet can be accompanied by water vapor.
- a draining gas such as air can also be injected at the inlet to evacuate the oxygen produced. The injection of a draining gas has the additional function of playing the role of thermal regulator.
- An elementary electrolysis reactor consists of an elementary cell as described above, with a cathode 2, an electrolyte 3, and an anode 4 and two monopolar connectors which provide the electrical, hydraulic and thermal distribution functions.
- a cathode 2 an electrolyte 3
- an anode 4 two monopolar connectors which provide the electrical, hydraulic and thermal distribution functions.
- interconnection devices usually called interconnectors or bipolar interconnection plates.
- the assembly is positioned between two end interconnection plates which support the electrical supplies and gas supplies of the electrolyser (electrolysis reactor).
- a high temperature water electrolyser thus comprises at least one, generally a plurality of electrolysis cells stacked on each other, each elementary cell being formed of an electrolyte, a cathode and an anode, the electrolyte being interposed between the anode and the cathode.
- the fluidic and electrical interconnection devices which are in electrical contact with one or more electrodes generally perform the functions of supplying and collecting electric current and delimit one or more compartments for the circulation of gases.
- a so-called cathode compartment has the function of distributing electric current and water vapor as well as recovering hydrogen from the cathode in contact.
- a so-called anode compartment has the function of distributing the electric current as well as recovering the oxygen produced at the anode in contact, possibly using a draining gas.
- FIG. 2 represents an exploded view of elementary patterns of a high temperature water vapor electrolyser according to the state of the art.
- This EHT electrolyser comprises a plurality of elementary electrolysis cells Cl, C2 ... of solid oxide type (SOEC) stacked alternately with interconnectors 5.
- Each cell Cl, C2 ... consists of a cathode 2.1, 2.2 , ... and an anode 4.1, 4.2, between which an electrolyte 3.1 is placed, 3.2 .... All the electrolysis cells are supplied in series by the electric current and in parallel by the gases.
- the interconnector 5 is a metallic alloy component, electronic conductor, which ensures the separation between the cathode 50 and anode 51 compartments, defined by the volumes between G interconnector 5 and the adjacent cathode 2.1 and between G interconnector 5 and the anode adjacent 4.2 respectively. It also ensures the distribution of gases to the cells.
- the injection of water vapor into each elementary pattern is done in the cathode compartment 50.
- the collection of the hydrogen produced and of the residual water vapor at the cathode 2.1, 2.2 ... is carried out in the cathode compartment 50 downstream of cell C1, C2 ... after dissociation of the water vapor by the latter.
- the oxygen produced at anode 4.2 is collected in the anode compartment 51 downstream of the cell C1, C2 ... after dissociation of the water vapor into oxygen ions by the latter.
- the interconnector 5 ensures the passage of current between the cells C1 and C2 by direct contact with the adjacent electrodes, that is to say between the anode 4.2 and the cathode 2.1.
- the cells Cl, C2 ... and interconnectors 5 used are the same components, but the operation is opposite to that of an EHT electrolyser as it comes to be explained with a reverse current direction, with air which supplies the cathode compartments and hydrogen as fuel which supplies the anode compartments.
- a channel plate is usually used as an interconnector both in EHT electrolysers and in SOFC fuel cells.
- the channel plates were first made of a nickel-chromium alloy, such as Haynes® 230®, then of a chromium-iron alloy, in particular of Crofer® 22 APU.
- FIGS. 3 and 4 Such an interconnector 6 is illustrated in FIGS. 3 and 4: it consists of three flat sheets 7, 8, 9 elongated along two axes of symmetry (X, Y) orthogonal to each other, the flat sheets being laminated and assembled together by welding laser by transparency.
- a central sheet 8 is interposed between a first 7 and a second end sheet 9.
- the first 7 end plate is intended to come into mechanical contact with the plane of a cathode 2.1 of a cell (C1) of elementary electrolysis and the central plate 8 is intended to come into mechanical contact with the plane of an anode 4.2 of an adjacent elementary electrolysis cell (C2).
- One of the end sheets 7 called the first end sheet, and the central sheet 8 each have an undrilled central part 75, 85.
- This first end plate 7 is pierced at the periphery of its central part 75, with four slots 71 to 74.
- the first 71 and second 72 slots are elongated over a length corresponding to part of the length of the central portion along the 'one of the X axes, while the third 73 and fourth 74 lights are elongated over a length corresponding substantially to the length of the central part along the other of the Y axes.
- the central sheet 8 it is pierced at the periphery of its central part 85, with four slots 81 to 84.
- the first 81 and second 82 slots are elongated over a length corresponding to part of the length of the central part along one of the X axes, while the third 83 and fourth 84 slots are elongated over a length corresponding substantially to the length of the central part along the other of the Y axes.
- the first end plate 7 further comprises a fifth 76 and sixth 77 lights arranged symmetrically on either side of the axis X, inside its first to fourth lights, and are elongated over a corresponding length substantially to the length of the central part along the X axis.
- the second end plate 9 has, at the periphery of its central part, four slots 91 to 94.
- the first 91 and second 92 slots are elongated over a length corresponding to part of the length of the central portion along the one of the X axes, while the third 93 and fourth 94 lights are elongated over a length corresponding substantially to the length of the central part along the other of the Y axes.
- the central part of the second end plate 9 is furthermore pierced by a fifth light 95.
- the second end plate 9 further comprises a sixth 96 and seventh 97 lights arranged symmetrically on either side of the Y axis, inside its first to fourth lights 91 to 94. These sixth 96 and seventh 97 lights are elongated over a length corresponding substantially to the length of the central part 95 along the other of the axes Y.
- the first to fourth slots 81 to 84 of the central sheet 8 are widened relative to the first to fourth slots 71 to 74, 91 to 94 of each end sheet 7, 9 respectively.
- All the enlarged openings 81 to 84 of the central sheet have in their enlarged part sheet metal tabs 810, 820, 830, 840 spaced apart from each other by forming a comb defining slots.
- the three sheets 7, 8, 9 are laminated and assembled by welding together.
- the sheet metal tabs 810, 820, 830, 840 then form spacers between the first 7 and the second 9 end sheets.
- Each of the first to fourth lights of one of the three sheets is in fluid communication individually respectively with one of the first to fourth corresponding lights of the other two sheets.
- the first lumen 71 of the first end plate 7 is in fluid communication with the fifth lumen 76 of the first end plate 7 through the slots of the first enlarged lumen 81 of the central plate 8.
- the second light 72 of the first end sheet 7 is in fluid communication with the sixth light 77 of the first end sheet 7 through the slots of the second enlarged light 82 of the central sheet 8.
- the third lumen 93 of the second end plate 9 is in fluid communication with the fifth lumen 95 of the second end plate 9 through the slots of the enlarged third lumen 83 of the central plate 8 and through the sixth lumen 96 of the second end plate 9.
- FIGS. 5 and 5A show in detail the embodiment of the comb formed by the sheet metal tongues 810 at the level of the enlarged slot 81 of the central sheet and its arrangement between the two end sheets 7, 9, in order to allow the supply an electrolysis cell, here in H2O water vapor.
- the comb formed 810, 811 allows the water vapor to pass from the supply clarinet 71, 81, 91 to the distribution slot 76 while passing in the space between the two end sheets 7, 9
- the thickness of the central sheet 8 at this comb 810, 811 gives it a spacer function and thus guarantees the height of the passage for water vapor in the inter-sheet end space 7, 9 .
- through holes 78, 88, 98; 79, 89, 99 through the three sheets 7, 8, 9.
- these through holes make it possible to guide all of the components of the same stack by tie rods or columns positioned within a single circular hole 78, 88, 98 with a centering function within each component and a single oblong hole 79, 88, 98 with a positioning function to ensure correct positioning by controlling the free movements and the blocked movements.
- Such an interconnector 6 with three thin sheets assembled 7, 8, 9 is very advantageous.
- the passage of gases through the interior of G interconnector 6 has the advantage of freeing up a flat surface for the production of seals.
- a uniform distribution of each gas H2O, CO2, Air
- these comb shapes for the widened slots 83, 86 recovery of the gas produced (3 ⁇ 4, CO, O2).
- An object of the invention is to meet this need at least in part.
- the invention relates in one aspect, an electrical and fluidic interconnector for the electrolysis or co-electrolysis at high temperature of water vapor or for a fuel cell (SOFC).
- SOFC fuel cell
- the device consists of a single monobloc piece of metal alloy, elongated along two axes of symmetry (X, Y) orthogonal to each other, the piece comprising: a solid central part, one of the faces of which is formed by one cavity is intended to come into mechanical contact with the plane of a cathode of an elementary electrochemical cell and the other of the faces is intended to come into mechanical contact with the plane of an anode of an adjacent elementary electrochemical cell , each of the two adjacent elementary cells of SOEC type being formed by a cathode, an anode, and an electrolyte interposed between the cathode and the anode,
- a peripheral part forming a frame around the central part, the frame being provided with four lights, the first and second of the four lights being elongated over a length corresponding to part of the length of the central part along one of the axes X being distributed on either side of said X axis, while the third and fourth of the four lights are elongated over a length corresponding substantially to the length of the central part along the other of the Y axes while being distributed on both sides and on the other of said axis Y.
- the first and the second lumen are in fluid communication with one of the faces of the central part
- the third and the fourth light are in fluid communication with the other of the faces of the central part, the passages ensuring the fluid communications being produced by porous zones and / or tongues forming combs inside the frame.
- the invention relates to a method for manufacturing an electrical and fluidic interconnector described above, according to which the part is produced in a single step by additive manufacturing.
- the single monobloc piece of an interconnector is preferably made of ferritic steel with about 20% chromium, preferably made of CROFER® 22APU or stainless steel of grade K41X.
- interconnectors dedicated to the electrolysis / co-electrolysis of water at high temperature or to fuel cells (SOFC) in large series by reducing the cost and the time of the manufacturing steps.
- SOFC fuel cells
- the single piece is made of ferritic stainless steel, more preferably of grade K41X.
- the thickness of the part is at least equal to 400 microns.
- the porous zones have a lattice structure.
- G interconnector comprises one or more through holes for positioning with centering G interconnector within a stack.
- the invention also relates in another of its aspects to a method for manufacturing an electrical and fluidic interconnector described above, according to which the part is produced in a single step by additive manufacturing.
- the direction of additive manufacturing is inclined at least 45 ° relative to one of the axes of G interconnector.
- the additive manufacturing is carried out by a selective laser fusion technique on a metal powder bed (FLLP).
- FLLP metal powder bed
- a single block is produced during the single step by additive manufacturing, comprising a plurality of parts, each forming an interconnector, then the individual cutting of each part is carried out.
- a stripping step is carried out, preferably by sandblasting or shot blasting, of each cut piece.
- Figure 1 is a schematic view showing the principle of operation of a high temperature water electrolyser.
- FIG 2 is a schematic exploded view of a portion of a high temperature water vapor electrolyser (EHT) of the SOEC type comprising interconnectors according to the state of the art.
- EHT water vapor electrolyser
- FIG 3 is a perspective view of an electrical and fluidic interconnector according to the state of the art, with three thin sheets (laminates) and assembled by welding, implemented in an EHT electrolyser or a battery fuel type SOFC.
- Figure 4 is an exploded top view of the interconnector according to the state of the art of Figure 3.
- Figure 4A is a detail view of Figure 4.
- FIG. 4B is a detailed perspective view of FIG. 4.
- Figure 5 is a schematic view illustrating additive manufacturing in one step of an electrical and fluidic interconnector according to the invention.
- Figure 6 is a partial schematic perspective view of an interconnector according to the invention.
- Figure 6 A is a detail view of Figure 6.
- FIG 7 is a partial schematic perspective view showing the detail of an interconnector according to a variant of the invention.
- the maximum distance for the unsupported parts is around 2mm.
- making a letter A represents a part with a horizontal crossbar. Unless this bar is less than 2 mm long, vertical supports must be provided to prevent it from deforming.
- an inclination at 45 ° between a main axis Y of G interconnector and the direction of additive manufacturing is appropriate, as symbolized in FIG. 5.
- a minimum wall thickness E equal to 400 ⁇ m.
- the one-piece interconnector 10 thus constituted comprises a central part 100 whose face formed by a cavity is intended to come into mechanical contact with the plane of a cathode 2 of an elementary electrochemical cell C2 and the other of the faces is intended to come into mechanical contact with the plane of an anode 4 of an adjacent elementary electrochemical cell (C1).
- a peripheral part forming a frame around the central part is pierced with four main lights 101, 102, 103, 104.
- the first light 101 is in fluid communication with the second light 102 passing through the cavity of the central part.
- this fluid communication can be dedicated to the supply of air, as a draining gas, and recovery of the oxygen produced.
- the third light 103 is in fluid communication with the fourth light 104 passing through the flat face of the central part, opposite the cavity.
- this fluid communication can be dedicated to the supply of water vapor, and recovery of the hydrogen produced.
- the passages ensuring fluid communications inside the frame are produced by tongues forming combs 106 (FIGS. 6 and 6A) and / or porous zones 106 ’(FIG. 7) inside the frame.
- combs 106 When one chooses to make combs 106, their thickness el is equal to at least 200pm, or a minimum total thickness E of G interconnector 100 to 400pm or even 500pm.
- porous zones 106 ’ can be produced which can be constructed in additive manufacturing by local modification of the printing parameters. These porous zones 106 ′ can advantageously have a lattice structure.
- porous zones 106 makes it possible to improve the distribution of gases within each electrolysis cell in contact with an interconnector 10 according to the invention because the gas which comes into contact with the central part 100, on one or the other of its faces, is distributed more homogeneously.
- these porous zones 106 ′ can increase the pressure drops within an interconnector 10 according to the invention, and therefore consequently an increase in the pressure of the gas (water vapor, draining gas in the case of l 'electrolysis of water), upstream of the stack constituting the electrolysis reactor or a SOFC fuel cell.
- the additional advantage of an area 106 'in lattice structure is to reduce these pressure drops.
- the production by additive manufacturing of G interconnector according to the invention 10 also makes it possible during the same step to make a circular hole 109 whose function is the centering of G interconnector during the production of a SOEC / SOFC stack and of an oblong hole 108 with positioning function to ensure correct positioning while controlling the free movements and the blocked movements.
- the individual cut-outs of the interconnectors are made and then a surface treatment can be carried out, preferably by sandblasting or by shot blasting.
- centering and positioning holes 108, 109 can be taken up by mechanical machining to perfect their bore.
- the G interconnector according to the invention can equally well be used for co-electrolysis of water vapor mixed with either carbon dioxide or nitrogen dioxide.
- the G interconnector according to the invention can equally well be used as a SOFC fuel cell.
- the light 101 is supplied with fuel, for example hydrogen or methane
- the light 103 is supplied with air or oxygen.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1872080A FR3089357B1 (en) | 2018-11-29 | 2018-11-29 | Interconnector for water electrolysis or co-electrolysis reactor (SOEC) or fuel cell (SOEFC), associated manufacturing process. |
PCT/EP2019/083130 WO2020109573A1 (en) | 2018-11-29 | 2019-11-29 | Interconnector for reactor for electrolysis or co-electrolysis of water (soec) or fuel cell (soefc), associated manufacturing process |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3888168A1 true EP3888168A1 (en) | 2021-10-06 |
Family
ID=67441166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19808853.6A Pending EP3888168A1 (en) | 2018-11-29 | 2019-11-29 | Interconnector for reactor for electrolysis or co-electrolysis of water (soec) or fuel cell (soefc), associated manufacturing process |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3888168A1 (en) |
FR (1) | FR3089357B1 (en) |
WO (1) | WO2020109573A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113328113B (en) * | 2021-05-28 | 2022-07-12 | 广东省科学院新材料研究所 | Preparation method of solid oxide fuel cell/electrolytic cell connector |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1344267A2 (en) * | 2000-11-08 | 2003-09-17 | Global Thermoelectric Inc. | Fuel cell interconnect |
FR2999612B1 (en) * | 2012-12-17 | 2015-02-20 | Commissariat Energie Atomique | METHOD FOR HIGH TEMPERATURE ELECTROLYSIS OF WATER VAPOR AND ANOTHER GAS, INTERCONNECTOR, REACTOR AND METHODS OF OPERATION THEREOF |
-
2018
- 2018-11-29 FR FR1872080A patent/FR3089357B1/en active Active
-
2019
- 2019-11-29 WO PCT/EP2019/083130 patent/WO2020109573A1/en unknown
- 2019-11-29 EP EP19808853.6A patent/EP3888168A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3089357A1 (en) | 2020-06-05 |
FR3089357B1 (en) | 2021-12-24 |
WO2020109573A1 (en) | 2020-06-04 |
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