WO2000026979A1 - Element de cadre pour pile a combustible a membrane electrolytique polymere, a structure stratifiee et procede permettant de le produire - Google Patents

Element de cadre pour pile a combustible a membrane electrolytique polymere, a structure stratifiee et procede permettant de le produire Download PDF

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Publication number
WO2000026979A1
WO2000026979A1 PCT/DE1999/003278 DE9903278W WO0026979A1 WO 2000026979 A1 WO2000026979 A1 WO 2000026979A1 DE 9903278 W DE9903278 W DE 9903278W WO 0026979 A1 WO0026979 A1 WO 0026979A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame element
fuel cell
layers
pem fuel
layer
Prior art date
Application number
PCT/DE1999/003278
Other languages
German (de)
English (en)
Inventor
Hans Kohlmüller
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2000026979A1 publication Critical patent/WO2000026979A1/fr

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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
    • H01M8/0271—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
    • H01M8/24—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
    • H01M8/24—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
    • H01M8/242—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0065—Solid electrolytes
    • H01M2300/0082—Organic polymers
    • 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 invention relates to a frame element for use in a PEM fuel cell, in particular in a demonstrator of a PEM fuel cell battery, which is constructed from several layers in laminate technology and in which e.g. Process gas lines and / or bores can be integrated.
  • the frame element is usually between a separator and a membrane in a PEM fuel cell unit of a fuel cell battery.
  • the PEM fuel cell battery with a sealing frame element, in which the frame element is formed in one piece, is known.
  • This frame element is expensive to manufacture, at least as long as only a few demonstrators are manufactured, because an extra injection mold has to be made for each. In addition, no change can be made to the finished frame element because it is in one piece.
  • a frame element in laminate technology which comprises several layers which are connected to one another, as is the subject of the invention and of claim 1.
  • the invention also relates to a method for producing a frame element, in which several layers of inexpensive material are stacked on top of one another. be added that a frame element in laminate technology for a PEM fuel cell arises from it.
  • the frame element is constructed from at least three layers, a combination of thermosets and thermoplastics, as well as one of the materials, that is, thermosets or thermoplastics, having proven to be particularly advantageous.
  • thermosets All materials that are available as sheet goods - that is, all types of plastics and natural materials, as well as metals - that can be glued can be used as layer materials.
  • Phenolic resins may be mentioned as examples of thermosets.
  • thermoplastics are:
  • Polystyrene, PVC, polycarbonate and polysulfone are examples of polystyrene, PVC, polycarbonate and polysulfone.
  • the individual layers are glued together.
  • Structures for manifolding are structures which, after lamination, provide the channels and / or lines for the coolant and / or process gas supply and / or disposal and / or the bores for the tie rods. According to another embodiment of the method, at least one layer is cut out and / or punched only after the connection with the other layers.
  • the invention replaces the one-piece frame elements that were previously used for edge sealing in demonstrators for PEM fuel cells by multilayer frame elements in laminate technology.
  • the frame element On the top and / or underside, which in each case forms the interface to the membrane, the separator or the further frame element, the frame element is preferably also provided with a layer of elastic material for better sealing.
  • This elastic layer is e.g. made of a silicone rubber, which in turn e.g. is applied via a screen printing process. This seal can also be applied from a different material and by a different method.
  • a further elastic intermediate layer is attached to the side of the frame element which adjoins the separator, so that minor manufacturing errors in the height of the separator or other small mechanical unevenness, such as those e.g. caused by swelling and / or shrinkage of the membrane in the construction of a fuel cell battery, can be easily compensated for.
  • This layer can e.g. also be made of silicone rubber.
  • the design of an element is referred to as laminate technology, in which the height of the element results from stacking and connecting individual, often also very thin layers.
  • the individual layers can be completely different in terms of their design, shape and material, as long as they have enough overlapping area that they can be connected to one another, for example by gluing, and their materials can be connected.
  • the invention is explained in more detail below on the basis of an exemplary embodiment.
  • Figure 1 shows a cross section through a PEM fuel cell unit in the bipolar structure.
  • Figure 2 shows a plan view of a frame element.
  • a separator 1 can be seen at the top and at the bottom, which closes the PEM fuel cell unit shown at the bottom and at the top.
  • the frame element 3 comprises four layers 3a, 3b, 3c and 3d. Not all layers have the same shape, as shown in example 3a and 3b. Layer 3a encases the gas line 5, while layer 3b only adjoins the gas line 5 and thus forms the process gas inlet on the active cell surface.
  • the individual layers are connected with an adhesive layer 4.
  • an adhesive layer 4 During production, it is irrelevant on which layer the adhesive and / or whether it is applied on one or both sides. Because of the easy handling of prefabricated parts it is advisable to use e.g. a hot melt adhesive, but a two-component adhesive, a one-component adhesive and / or a UV-curable adhesive can also be used.
  • the sealing layer 6 is located on the underside of the frame element 3.
  • This layer preferably consists of silicone rubber and / or neoprene and is applied, for example, to the outer laminate layer using a screen printing process. This seals against the membrane 7.
  • the PEM fuel cell is again closed by a separator 1.
  • a frame element can also rest on a further frame element, ie the invention is not limited to the bipolar layer structure of a fuel cell in a fuel cell battery shown here as an embodiment. In particular, it is also suitable, for example, for the monopolar structure of a battery.
  • FIG. 2 shows a top view of a frame element 3, of one of the layers 3a to 3d.
  • the frame element belongs to a fuel cell with a square shape. However, a frame element according to the invention can also be implemented for fuel cells with any other shape.
  • a number of openings 8 can be seen in the frame element, which can serve different purposes: They are either part of a process gas supply or discharge line, part of a bore for e.g. a tie rod with which the PEM fuel cell battery is held together using filter press technology, or are part of a coolant circuit.
  • Layers 3a to 3d are connected to one another in such a way that the respective openings for the process gas line or bore come to lie on one another.
  • the production of the frame element in laminate technology does not require expensive injection molds and can be implemented at short notice. Changes to the frame element can be carried out quickly and cheaply, which is why the invention is particularly suitable for the construction of demonstrators, in which changes are often desired.
  • the installation of an elastic layer on the side of the frame element facing the separator makes it possible to also use non-resilient separators because mechanical pressure is absorbed by the elastic layer. An axial change in length of the PEM fuel cell battery can also be absorbed via the elastic layer.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un élément (3) de cadre s'utilisant dans une pile à combustible à membrane électrolytique polymère, notamment dans le démonstrateur d'une batterie à piles à combustible à membrane électrolytique, à structure stratifiée (3a, 3b, 3c, 3d) et pouvant être intégré par ex. dans des conduites (5) de gaz de traitement et/ou dans des trous. Cet élément (3) de cadre se trouve de manière générale entre un séparateur (1) et une membrane (7) dans une unité de piles à combustible à membrane électrolytique polymère d'une batterie de piles à combustible.
PCT/DE1999/003278 1998-10-30 1999-10-12 Element de cadre pour pile a combustible a membrane electrolytique polymere, a structure stratifiee et procede permettant de le produire WO2000026979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19850177.3 1998-10-30
DE19850177 1998-10-30

Publications (1)

Publication Number Publication Date
WO2000026979A1 true WO2000026979A1 (fr) 2000-05-11

Family

ID=7886226

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003278 WO2000026979A1 (fr) 1998-10-30 1999-10-12 Element de cadre pour pile a combustible a membrane electrolytique polymere, a structure stratifiee et procede permettant de le produire

Country Status (1)

Country Link
WO (1) WO2000026979A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089019A1 (fr) * 2000-05-18 2001-11-22 Siemens Aktiengesellschaft Empilement de cellules electrochimiques pourvu d'elements cadres
EP1333514A1 (fr) * 2002-01-31 2003-08-06 SFC Smart Fuel Cell AG Cadre d'étanchéité pour pile à combustible
EP1465272A2 (fr) * 2003-04-02 2004-10-06 Matsushita Electric Industrial Co., Ltd. Structure d'étanchéité d'un pile à combustible
NL1027443C2 (nl) * 2004-11-08 2006-05-09 Nedstack Holding B V Methode voor het vervaardigen van membraanelektrode constructies voor polymeer Elektrolyt Brandstofcellen.
EP1808922A1 (fr) * 2006-01-11 2007-07-18 Samsung SDI Co., Ltd. pile à combustible ayant un cadre d'étanchéité comprenant des contacts pour la mesure de tension
WO2007088049A1 (fr) * 2006-02-02 2007-08-09 Umicore Ag & Co. Kg ensemble électrode à membrane ayant un bord d'étanchéité à composants multiples
DE102021209033A1 (de) 2021-08-18 2023-02-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Membran-Elektroden-Anordnung, Membran-Elektroden-Anordnung sowie Brennstoffzelle

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530003A (en) * 1967-02-24 1970-09-22 Gen Constr Elect Mec Compact fuel cell battery
US4048386A (en) * 1975-08-14 1977-09-13 Stamicarbon B.V. Process for making an electrochemical cell or battery, e.g. a fuel cell or fuel cell battery, and a cell or battery made by the process
US4317864A (en) * 1977-06-30 1982-03-02 Siemens Aktiengesellschaft Battery consisting of a multiplicity of electrochemical cells
JPS58102470A (ja) * 1981-12-15 1983-06-18 Meidensha Electric Mfg Co Ltd 電解液循環型電池用枠付電極
JPS58103780A (ja) * 1981-12-16 1983-06-20 Meidensha Electric Mfg Co Ltd 枠付電極の製造方法
US4590135A (en) * 1984-05-11 1986-05-20 Occidental Chemical Corporation Fuel cell structures
US5187025A (en) * 1992-02-03 1993-02-16 Analytic Power Corp. Unitized fuel cell structure
JPH07235314A (ja) * 1994-02-21 1995-09-05 Toyota Motor Corp 固体高分子型燃料電池の単電池およびその製造方法
JPH07249417A (ja) * 1994-03-10 1995-09-26 Toyota Motor Corp 燃料電池の単電池およびその製造方法
US5464700A (en) * 1991-06-04 1995-11-07 Ballard Power Systems Inc. Gasketed membrane electrode assembly for electrochemical fuel cells
US5733678A (en) * 1993-05-04 1998-03-31 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Polymer fuel cell

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530003A (en) * 1967-02-24 1970-09-22 Gen Constr Elect Mec Compact fuel cell battery
US4048386A (en) * 1975-08-14 1977-09-13 Stamicarbon B.V. Process for making an electrochemical cell or battery, e.g. a fuel cell or fuel cell battery, and a cell or battery made by the process
US4317864A (en) * 1977-06-30 1982-03-02 Siemens Aktiengesellschaft Battery consisting of a multiplicity of electrochemical cells
JPS58102470A (ja) * 1981-12-15 1983-06-18 Meidensha Electric Mfg Co Ltd 電解液循環型電池用枠付電極
JPS58103780A (ja) * 1981-12-16 1983-06-20 Meidensha Electric Mfg Co Ltd 枠付電極の製造方法
US4590135A (en) * 1984-05-11 1986-05-20 Occidental Chemical Corporation Fuel cell structures
US5464700A (en) * 1991-06-04 1995-11-07 Ballard Power Systems Inc. Gasketed membrane electrode assembly for electrochemical fuel cells
US5187025A (en) * 1992-02-03 1993-02-16 Analytic Power Corp. Unitized fuel cell structure
US5733678A (en) * 1993-05-04 1998-03-31 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Polymer fuel cell
JPH07235314A (ja) * 1994-02-21 1995-09-05 Toyota Motor Corp 固体高分子型燃料電池の単電池およびその製造方法
JPH07249417A (ja) * 1994-03-10 1995-09-26 Toyota Motor Corp 燃料電池の単電池およびその製造方法

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 204 (E - 197) 9 September 1983 (1983-09-09) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 208 (E - 198) 14 September 1983 (1983-09-14) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 01 31 January 1996 (1996-01-31) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089019A1 (fr) * 2000-05-18 2001-11-22 Siemens Aktiengesellschaft Empilement de cellules electrochimiques pourvu d'elements cadres
EP1333514A1 (fr) * 2002-01-31 2003-08-06 SFC Smart Fuel Cell AG Cadre d'étanchéité pour pile à combustible
WO2003065486A1 (fr) * 2002-01-31 2003-08-07 Sfc Smart Fuel Cell Ag Cadre d'etancheite pour empilement de piles a combustible
EP1465272A2 (fr) * 2003-04-02 2004-10-06 Matsushita Electric Industrial Co., Ltd. Structure d'étanchéité d'un pile à combustible
EP1465272A3 (fr) * 2003-04-02 2007-02-21 Matsushita Electric Industrial Co., Ltd. Structure d'étanchéité d'un pile à combustible
US7276310B2 (en) 2003-04-02 2007-10-02 Matsushita Electric Industrial Co., Ltd. Electrolyte membrane for a fuel cell, electrolyte membrane electrode assembly for a fuel cell, and a fuel cell
NL1027443C2 (nl) * 2004-11-08 2006-05-09 Nedstack Holding B V Methode voor het vervaardigen van membraanelektrode constructies voor polymeer Elektrolyt Brandstofcellen.
EP1808922A1 (fr) * 2006-01-11 2007-07-18 Samsung SDI Co., Ltd. pile à combustible ayant un cadre d'étanchéité comprenant des contacts pour la mesure de tension
WO2007088049A1 (fr) * 2006-02-02 2007-08-09 Umicore Ag & Co. Kg ensemble électrode à membrane ayant un bord d'étanchéité à composants multiples
JP2009525572A (ja) * 2006-02-02 2009-07-09 ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト 多成分シーリングリムを有する膜−電極接合体
DE102021209033A1 (de) 2021-08-18 2023-02-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Membran-Elektroden-Anordnung, Membran-Elektroden-Anordnung sowie Brennstoffzelle

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