WO2023104970A2 - Einheit - Google Patents
Einheit Download PDFInfo
- Publication number
- WO2023104970A2 WO2023104970A2 PCT/EP2022/084995 EP2022084995W WO2023104970A2 WO 2023104970 A2 WO2023104970 A2 WO 2023104970A2 EP 2022084995 W EP2022084995 W EP 2022084995W WO 2023104970 A2 WO2023104970 A2 WO 2023104970A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- seals
- arrangement
- unit
- openings
- Prior art date
Links
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 239000003566 sealing material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- H01M8/0271—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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/881—Electrolytic membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—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
- H01M8/10—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
- the invention relates to a unit comprising an arrangement of two gas diffusion electrodes between which a membrane is arranged in a sandwich-like manner, the arrangement being sealingly connected to a frame enclosing the arrangement on the outer circumference by means of a first seal, and the frame having two opposite end faces.
- Such a unit is known from DE 10 2013 014 083 A1.
- the unit is a membrane electrode assembly.
- the arrangement is surrounded on the outer circumference by the frame at a distance, with the seal being arranged in the gap formed by the distance, which sealingly connects the arrangement and the frame.
- the membrane electrode assembly is intended for a fuel cell.
- the frame is constructed in the manner of a sandwich and comprises two outer frame parts, between which an inner frame part is arranged.
- the assembly is joined to the frame using an elevated temperature pressing process.
- the sealing material of the seal is arranged between the outer frame parts in the pressing direction and uses these to limit the distance from the arrangement.
- the outer frame parts are moved towards one another until they are in contact with the inner frame part.
- the free-flowing sealing material is pressed into the gap formed by the distance until the gap is sealed and the sealing material penetrates into the boundary of the adjacent arrangement. This creates the membrane-electrode unit as a composite of the arrangement and the frame by means of the seal.
- the membrane electrode assembly is held within the frame by the seal.
- the invention is based on the object of further developing a unit of the type mentioned at the outset in such a way that an electrochemical cell operated therewith, in particular a fuel cell, has a further simplified structure and can be produced even more simply and cost-effectively.
- a unit comprising an arrangement of two gas diffusion electrodes, between which a membrane is arranged in a sandwich-like manner, the arrangement being sealingly connected to a frame enclosing the arrangement on the outer circumference by means of a first seal, and the frame connecting two to each other has opposite end faces, wherein the frame has line-shaped openings which extend from the first end side to the second end side of the frame and the openings are surrounded by second seals on the end side on both sides of the frame and are sealed against one another during the intended use of the unit.
- the advantage here is that the unit is designed to be multifunctional and thus has additional functions, which enable a low-parts, cost-effective construction of an electrochemical cell, for example a fuel cell.
- the unit is designed as a membrane electrode unit.
- a membrane-electrode assembly as is known from the prior art and described at the outset, usually has to be sealed by additional and separately produced seals within an electrochemical cell, for example a fuel cell. Manufacturing and assembling the seals makes manufacturing the cell complex and expensive. In addition, the function of the cell can be impaired by incorrect assembly of the other seals.
- the frame comprises the line-shaped openings, which extend from the first to the second end face of the frame, with the openings being surrounded by second seals on the end face on both sides of the frame.
- the arrangement and the second seals form a preassembled unit.
- the openings in the frame are formed congruently with the openings in the bipolar plates bordering on both sides, the openings in the bipolar plates being formed by coolant inlets and outlets and gas inlets and outlets.
- the openings and the second seals sealing the openings form an integral part of the unit, the manufacture and assembly of an electrochemical cell are inexpensive and simplified.
- a unit comprising an arrangement of two gas diffusion layers, between which a catalyst-coated membrane is arranged in a sandwich-like manner, the arrangement being sealingly connected by means of a first seal to a frame enclosing the arrangement on the outer circumference, the frame having two opposite end faces , wherein the frame has line-shaped openings which extend from the first end face to the second end face of the frame and wherein the
- Openings of second seals are enclosed on the front side on both sides of the frame and sealed against each other during the intended use of the unit.
- the second seals consist of an elastomeric sealing material.
- Elastomeric sealing materials are often available at low cost in many specifications.
- At least two, more preferably all of the second seals can be made in one piece, merging into one another and made of the same material.
- the advantage here is that the at least two, more preferably all seals in just one Method steps can be produced and that transitions between adjacent second seals and the associated risk of leaks between the second seals are avoided as a result of the one-piece design.
- the second seals can be profiled.
- the frame is preferably constructed in the manner of a sandwich and comprises two outer frame parts, between which an inner frame part is arranged.
- a frame construction has the advantage that the first seal produces a sealing connection between the arrangement and the frame of the unit by pressing between the outer frame parts.
- the frame construction may be made of a thermoplastic film material such as polyester.
- the inner frame part overhangs the outer frame parts on the outer circumference side and thus forms an overhang on the frame.
- the openings are arranged in this supernatant.
- the second seals are sealingly connected to the inner frame part and enclose the openings in a sealing manner during the intended use of the electrochemical cell in which the unit is used.
- the second seals are preferably connected to the inner frame part in a materially and/or form-fitting manner.
- the second seals are injection molded onto the inner frame part. This results in a material connection.
- a positive fit between the second seals and the inner frame can be achieved in that the inner frame part has fastening openings through which the sealing material of the second seals has penetrated due to the manufacturing process. This makes it easy to produce the second seals, which are arranged on the front side on both sides of the inner frame part.
- Hydrogen and oxygen are added to a fuel cell, resulting in water and energy.
- An electrolyzer on the other hand, is supplied with water and energy, so that hydrogen and oxygen are produced.
- a redox flow battery processes electrolyte fluids in a chemical reaction (redox reaction) that provides usable electrical energy.
- FIGS. 1 and 2 are shown schematically.
- FIG. 1 shows a schematic section through the membrane-electrode unit according to FIG. 2 along the line AB
- FIG. 2 shows the unit from FIG. 1 in a plan view. implementation of the invention
- Figure 1 shows section A-B from Figure 2.
- the unit comprises the assembly 1 formed from the two gas diffusion electrodes 2,3 and the membrane 4, the membrane 4 being sandwiched between the gas diffusion electrodes 2,3.
- the arrangement 1 is surrounded by the frame 6 on the outer circumference, the arrangement 1 being held in the frame 6 in a sealing manner by means of the first seal 5 .
- the frame 6 is designed in several parts and includes the two outer frame parts 11 , 12 which form the end faces 7 , 8 .
- the inner frame part 13 is sandwiched between the outer frame parts 11 , 12 .
- the line-shaped openings 9 are arranged in the inner frame part 13 and are formed congruently with the inlets and outlets (not shown here) of bipolar plates of an electrochemical cell, here a fuel cell stack.
- the inner frame part 13 is provided with fastening openings 14, which are covered by the sealing material of the second seals 10.1, 10.2, 10.3, ... are penetrated.
- FIG. 2 shows a plan view of the unit from FIG.
- the outer frame parts 11 , 12 enclose the arrangement 1 on the outer circumference, with the inner frame part 13 , which is arranged in the plane of the drawing between the outer frame parts 11 , 12 , protruding over the outer frame parts 11 , 12 on the circumference.
- the openings 9 are arranged, which are surrounded by the integrally formed second seals 10.1, 10.2, 10.3, .
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
- Hybrid Cells (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280080974.8A CN118369793A (zh) | 2021-12-10 | 2022-12-08 | 具有框架密封件的膜-电极单元 |
AU2022405687A AU2022405687A1 (en) | 2021-12-10 | 2022-12-08 | Membrane-electrode assembly with sealed frame |
IL313395A IL313395A (en) | 2021-12-10 | 2022-12-08 | Membrane electrode assembly with sealed frame |
MX2024007027A MX2024007027A (es) | 2021-12-10 | 2022-12-08 | Unidad de membrana y electrodos teniendo una obturacion de marco. |
KR1020247021416A KR20240104222A (ko) | 2021-12-10 | 2022-12-08 | 밀봉된 프레임을 포함하는 멤브레인-전극 어셈블리 |
CA3240605A CA3240605A1 (en) | 2021-12-10 | 2022-12-08 | Membrane-electrode assembly with sealed frame |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021132696.6 | 2021-12-10 | ||
DE102021132696.6A DE102021132696A1 (de) | 2021-12-10 | 2021-12-10 | Einheit |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2023104970A2 true WO2023104970A2 (de) | 2023-06-15 |
WO2023104970A3 WO2023104970A3 (de) | 2023-11-23 |
Family
ID=84799699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/084995 WO2023104970A2 (de) | 2021-12-10 | 2022-12-08 | Einheit |
Country Status (8)
Country | Link |
---|---|
KR (1) | KR20240104222A (de) |
CN (1) | CN118369793A (de) |
AU (1) | AU2022405687A1 (de) |
CA (1) | CA3240605A1 (de) |
DE (1) | DE102021132696A1 (de) |
IL (1) | IL313395A (de) |
MX (1) | MX2024007027A (de) |
WO (1) | WO2023104970A2 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013014083A1 (de) | 2013-08-27 | 2015-03-05 | Elcomax Gmbh | Verfahren zur Herstellung einer Membran-Elektroden-Einheit mit umlaufender Dichtung sowie Membran-Elektroden-Einheit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2444246C (en) * | 2001-04-23 | 2011-07-19 | Nok Corporation | Fuel cell and method of manufacturing the fuel cell |
US20050136317A1 (en) | 2003-12-19 | 2005-06-23 | 3M Innovative Properties Company | Molded multi-part flow field structure |
JP5142530B2 (ja) * | 2004-10-08 | 2013-02-13 | パナソニック株式会社 | 高分子電解質形燃料電池 |
JP2008243788A (ja) | 2007-02-28 | 2008-10-09 | Toyota Motor Corp | 燃料電池 |
JP2015170398A (ja) | 2014-03-05 | 2015-09-28 | パナソニックIpマネジメント株式会社 | 固体高分子電解質型燃料電池 |
-
2021
- 2021-12-10 DE DE102021132696.6A patent/DE102021132696A1/de active Pending
-
2022
- 2022-12-08 IL IL313395A patent/IL313395A/en unknown
- 2022-12-08 MX MX2024007027A patent/MX2024007027A/es unknown
- 2022-12-08 CN CN202280080974.8A patent/CN118369793A/zh active Pending
- 2022-12-08 AU AU2022405687A patent/AU2022405687A1/en active Pending
- 2022-12-08 WO PCT/EP2022/084995 patent/WO2023104970A2/de active Application Filing
- 2022-12-08 CA CA3240605A patent/CA3240605A1/en active Pending
- 2022-12-08 KR KR1020247021416A patent/KR20240104222A/ko unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013014083A1 (de) | 2013-08-27 | 2015-03-05 | Elcomax Gmbh | Verfahren zur Herstellung einer Membran-Elektroden-Einheit mit umlaufender Dichtung sowie Membran-Elektroden-Einheit |
Also Published As
Publication number | Publication date |
---|---|
KR20240104222A (ko) | 2024-07-04 |
DE102021132696A1 (de) | 2023-06-15 |
WO2023104970A3 (de) | 2023-11-23 |
CN118369793A (zh) | 2024-07-19 |
IL313395A (en) | 2024-08-01 |
CA3240605A1 (en) | 2023-06-15 |
MX2024007027A (es) | 2024-06-21 |
AU2022405687A1 (en) | 2024-05-16 |
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