EP1595304A2 - Interconnexions compliantes, resistant aux contraintes pour empilement de pile a combustible a oxyde solide - Google Patents

Interconnexions compliantes, resistant aux contraintes pour empilement de pile a combustible a oxyde solide

Info

Publication number
EP1595304A2
EP1595304A2 EP04707406A EP04707406A EP1595304A2 EP 1595304 A2 EP1595304 A2 EP 1595304A2 EP 04707406 A EP04707406 A EP 04707406A EP 04707406 A EP04707406 A EP 04707406A EP 1595304 A2 EP1595304 A2 EP 1595304A2
Authority
EP
European Patent Office
Prior art keywords
compliant
superstructure
assembly
interconnect
fuel cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04707406A
Other languages
German (de)
English (en)
Other versions
EP1595304A4 (fr
Inventor
Sunil G. Warrier
Jean Yamanis
Wayde R. Schmidt
Raymond C. Benn
John G. Smeggil
Venkata R. Vendula
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UTC Power Corp
Original Assignee
UTC Fuel Cells LLC
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 UTC Fuel Cells LLC filed Critical UTC Fuel Cells LLC
Publication of EP1595304A2 publication Critical patent/EP1595304A2/fr
Publication of EP1595304A4 publication Critical patent/EP1595304A4/fr
Withdrawn legal-status Critical Current

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
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0232—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
    • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
    • H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
    • 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
    • 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
    • H01M8/10—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
    • Y02E60/50—Fuel cells

Definitions

  • a fuel cell is a device which electrochemically reacts a fuel with an oxidant to generate a direct current.
  • the fuel cell typically includes a cathode, an electrolyte and an anode, with the electrolyte being a non-porous material positioned between the cathode and anode materials.
  • such fuel cells are typically connected together using interconnects or bipolar plates to form a stack, or fuel cell stack, through which fuel and oxidant fluids are passed. Electrochemical conversion occurs, with the fuel being electrochemically reacted with the oxidant, to produce a DC electrical output.
  • Cathode interconnect materials that have been used to date include perovskite- based ceramics, e.g. lanthanum chxomite, high temperature chromium-based alloys or composites thereof, and nickel-based alloys or intermetallics have been used typically for cells operating in the 800-1000 °C range.
  • ferritic steels may have suitable oxidation resistance at temperatures less than about 600°C or for short lifetimes, but do not have the required oxidation resistance to last for 40,000 hours, or longer, due to the increasing ohmic resistance across the oxide scale with time under load.
  • the oxidation resistance is clearly a concern on the cathode/oxidant side of the interconnect.
  • the partial pressure of oxygen at the anode/fuel electrode may also be high enough to form Cr 2 O 3 and the oxide may be even thicker (viz. the presence of electrochemically formed water) than on the cathode side of the interconnect, so the resistivity of the interconnect may increase on both sides.
  • the construction materials on the anode side of the interconnect could be the same as the cathode, although prior art has shown that, in the case of a ferritic steel interconnect in contact with a nickel anodic contact, weld points that formed between the steel and the nickel still formed a thin electrically insulating Cr 2 O 3 layer over time which degraded performance.
  • the present invention provides a solid oxide fuel cell design having a compliant porous interconnect which alleviates the thermal expansion mismatch stresses which are typically generated by higher thermal expansion oxidation resistant interconnect metals and/or alloys for the cathode.
  • the interconnect of the present invention advantageously allows for the use of higher thermal expansion oxidation resistant metals or alloys for the separator plate. [0018]
  • the interconnect of the present invention further advantageously allows for less stringent dimensional tolerances of the stack components since the mterconnect is compliant in all three dimensions and permits displacement with minimal increase in stress to accommodate dimensional variations.
  • an interconnect which comprises a compliant porous member, compliant in all three-dimensions and having first portions defining a separator plate contact zone and second portions spaced from said first portions and defining an electrode contact zone.
  • an interconnect assembly for solid oxide fuel cells, which assembly comprises a separator plate having two opposed surfaces; and at least one mterconnect positioned adjacent to at least one of said two opposed surfaces and comprising a compliant porous member, compliant in all three- dimensions and having first portions defining a separator plate contact zone and second portions spaced from said first portions and defining an electrode contact zone.
  • the interconnect assembly could be comprised of one or more layers, at least one of which is compliant as described herein. In this embodiment, the compliant layer may or may not be in contact with the separator plate or the electrodes.
  • a solid oxide fuel cell assembly which comprises a plurality of fuel cells arranged in a stack; and a plurality of interconnect assemblies positioned between adjacent cells of said- tack, said interconnect assemblies comprising a separator plate having two opposed surfaces and at least one interconnect positioned adjacent to at least one of said two opposed surfaces and comprising a compliant porous member, compliant in all three dimensions and having first portions defining a separator plate contact zone and second portions spaced from said first portions and defining an electrode contact zone.
  • Particularly desirable eoi-figuratioiis of the interconnect involve three- dimensional compliant superstructures made out of wire weaves or other compliant substructures. BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 schematically illustrates a fuel cell stack assembly in accordance with the present invention
  • Figure 2 schematically illustrates a portion of the fuel cell stack assembly of claim 1;
  • Figure 3 illustrates a preferred embodiment of an interconnect of the present invention
  • FIGS 4 and 5 illustrate another preferred embodiment of an interconnect of the present invention
  • Figure 6 illustrates an alternate embodiment of an interconnect of the present invention
  • Figure 7 illustrates an alternate embodiment of an interconnect of the present invention
  • Figure 8 illustrates another alternate embodiment of an interconnect of the present invention
  • Figure 9 illustrates a wire structure with compliance loops according to the invention.
  • FIG. 10 illustrates-another preferred embodiment- of an-interconnect of the present invention.
  • the invention relates to a fuel cell assembly and, more particularly, to a solid oxide fuel cell (SOFC) stack having improved metallic interconnect which decouples the need for good coefficient of thermal expansion (CTE) match with other stack components from other requirements such as oxidation resistance and oxide scale electron conductance.
  • SOFC solid oxide fuel cell
  • the invention relates further to a fuel cell stack and, more particularly, to a solid oxide fuel cell stack having an improved interconnect, whereby stresses due to difference in thermal expansion coefficient between adjacent fuel cell stack components, and specifically between the cathode or anode interconnect and adjacent fuel cell or separator plate, are minimized so as to provide for enhanced fuel cell stack lifetime and robustness under steady state and thermal cycling.
  • Reduction in stress is accomplished through a compliant interconnect superstructure provided from a compliant sub-structure, wherein the interconnect superstructure is provided having contours so as to define spaced contact zones for contacting a separator plate on one side and an electrode of a fuel cell on the other side, and the sub-structure is provided by highly compliant pre-buckled architecture as present in a wire mesh.
  • the combination of the two, compliant superstructure and compliant sub-structure, providing spaced contact zones in accordance with the present invention advantageously allows for CTE mismatch between various components of the stack without subjecting such components, or bonds or other types of connection therebetween, to excessive stress, while improving fluid flow and electrical functionality of the fuel cell.
  • the compliant interconnects described herein are designed such that high values of both in-plane and out-of-plane compliance are achieved.
  • any such interconnect that provides for acceptable levels of either in-plane compliance or out-of-plane compliance, or both, will be within the broad scope of the invention.
  • the compliant superstructure is compliant in at least three orthogonal axes, and is compliant with respect to a load applied from any direction.
  • Narious approaches to achieve this include wire weave based superstructures as described above, 3-dimensional knitted wire structures, helical coils in various configurations including slanted helical coils provided by pre-buckled highly compliant sub-structures, wires with in-built highly compliant compliance loops, similar interconnects made from sheet metal, foil, foam, or expanded metals formed into superstructures, etc.
  • Preferred compliance values of the interconnects are 5x10 mm / ⁇ (in strain stress units) and higher for typical interconnects at room temperature. More preferred compliancy values are 5x10 "5 mm 2 ⁇ and higher for typical interconnects.
  • a fuel cell stack assembly 10 in accordance with the present invention is schematically illustrated.
  • Assembly 10 preferably includes a plurality of fuel cells 12 arranged in a stack with bipolar plates 14 positioned therebetween.
  • Fuel cells 12 typically include an electrolyte 16, a cathode layer 18 positioned on one side of electrolyte 16, and an anode layer 20 positioned on the other side of electrolyte 16. Bonding or current carrying layers 22 may be used on the two sides.
  • Bipolar plate 14 in accordance with the present invention advantageously includes a separator plate 24 having a cathode facing surface 26 and an anode facing surface 28, a cathode-side interconnect 30 positioned between cathode facing surface 26 and a cathode layer 18 (or layer 22) of an adjacent fuel cell 12, and an anode-side interconnect 32 positioned between anode facing surface 28 and an anode layer 20 (or layer 22) of an adjacent fuel cell 12.
  • Interconnects 30, 32 are advantageously provided of an electron conducting material and are in electrical communication with separator plate 24.
  • a particular aspect of the present invention is the design of cathode-side and anode-side interconnects 30, 32, wherein the interconnects are provided as a sheet of woven wire material formed to have a plurality of first portions 34 or 38 defining an electrode contact zone, and a plurality of second portions 36 defining a separator plate contact zone which is spaced from the electrode contact zone.
  • interconnects 30, 32 in accordance with the present invention, especially cathode-side interconnect 30, consists of compliant sub-structure, preferably wire weaves, material as described above which is formed, for example through die stamping, rolling, bending or the like, to have a three-dimensional superstructure defining first and second portions 34, 36.
  • the compliant wire weave sub-structure of interconnects 30, 32 in accordance with the present invention is advantageously a wire weave such as that illustrated in Figure 2, which advantageously provides a pre-buckled architecture that increases compliance of interconnect 30, 32.
  • This compliance allows for movement or deflection without stressing of first portions 34, relative to second portions 36 during thermal cycling and the like, which advantageously serves to eliminate stresses caused by CTE mismatch between various components.
  • the compliant interconnects formed from such sub-structures and superstructures also advantageously allows for movement between first portion 34 with respect to second portion 36 without stressing during assembly, thereby permitting larger dimensional tolerance variations.
  • the wire weave as shown in Figure 2 may include a first plurality of wires or substructures disposed in one direction, and a second plurality of wires or substructures disposed in a different direction, so as to define a woven wire structure which is porous to operating fuel cell gaseous materials and compliant as desired in different directions, in accordance with the present invention.
  • Figure 3 shows a perspective view of an interconnect 30, 32 to further illustrate a preferred sub-structure and superstructure thereof.
  • Figures 1, 2 and 3 illustrate interconnects 30, 32 as members having a substantially sinusoidal cross section, wherein peaks 38 on one side of a centerline 40 define the electrode contact zone, and peaks 42 on the other side of centerline 40 define the separator plate contact zone.
  • the undulating or vertically contoured shape of interconnect 30, 32 extends in the transverse direction to the cross section illustrated in Figures 1 and 2 so as to define a series of spaced peaks 38, 42, each extending in opposite directions from centerline 40, so as to define the spaced contact zones discussed above.
  • interconnects 30, 32 within the broad scope of the present invention, which could equally provide for the spaced contact zones connected by compliant members which provide for- advantageous reduction in stresses between components as desired in accordance with the present invention.
  • Figure 4 illustrates interconnect 30, 32 with compliant superstructures shaped in a substantially orthogonal, for example square or retangular channel pattern, made from a compliant sub-structure material, preferably wire weave, wherein the interconnects form spaced contact zones in the cross sectional view.
  • Figure 4 further illustrates a preferred wire weave structure according to the invention.
  • Figure 5 shows a perspective view of such an interconnect 30, 32 on bipolar plate 14.
  • Figure 6 shows a substantially square channeled superstructure interconnect 30, 32 with spaced contact zones present in both the cross sectional and the transverse direction.
  • Figure 7 shows a substantially trapezoidal superstructure interconnect 30, 32 made from compliant sub-structures.
  • Figure 8 illustrates a superstructure interconnect 30, 32 made into a circular or a helical, preferably slanted, structure wherein a compliant sub-structure such as a pre-buckled wire or wire weave forms the three-dimensional superstructure.
  • Figure 9 illustrates an embodiment wherein wires 52 are provided with compliance loops 54 as described above.
  • This structure serves to enhance the ability of the wire to resiliently deform as needed to respond to different CTE, and also to provide desired manufacturing tolerances.
  • This compliance loop structure can be incorporated into the substructure and or the superstructure of the interconnect of the present invention.
  • Figure 10 shows a substantially hour-glass shaped superstructure interconnect
  • Interconnect 30, 32 in these examples can be positioned between components of the stack in similar fashion to the embodiment described above in connection with
  • Cathode-side interconnect 30 is preferably provided -having the architecture as described above and illustrated in Figures 1 and 2.
  • Anode-side interconnect 32 can advantageously be provided having the same architecture, or having a foam architecture defining foam cells which, themselves, define the contact zones for contact on one. side with separator plate 24 and on the other side with the anode of a fuel cell 12.
  • cathode-side interconnect 30 of an oxidation resistant conductive material, preferably of a material selected from the group consisting of selected stainless steels, stainless steel alloys and super-alloys comprising Ni-Cr-, Ni-Cr-Fe-, Fe-Cr-, Fe-Cr-Ni and Co-based alloys as well as Cr-based alloys and noble metal/alloys.
  • super-alloys include HAYNES® alloy
  • HAYNES® alloy 230-W Hastelloy X
  • Other materials include composites of at least 2 materials, for example metals and ceramics containing any of the above mentioned metals and alloys.
  • Another set of materials include noble metal coated super-alloys.
  • Anode-side interconnect 32 is advantageously provided of a material selected from the group consisting of Ni, Ni-Cu, Ni-Cr-, Ni-Cr-Fe-, Fe-Cr-, Fe-Cr-Ni and Co- based alloys as well as Cr-based alloys and noble metal/alloys and including such alloys coated with Ni, Cu or Ni-Cu as well as noble metals.
  • Other materials include composites of metals and ceramics containing any of the above mentioned metals and alloys.
  • interconnects 30, 32 when provided having the configuration of Figures 1 and 2 preferably define a superstructure wherein peaks 38, 42 define a superstructure wavelength of between 0.1 mm and 100 mm, a superstructure amplitude of between 0.1 mm and 50 mm, and a superstructure periodicity which may be uniform or random.
  • the wire weave sub-structure of interconnect 30, 32 in accordance with the present invention is preferably provided having a wire diameter of between 0.05 mm and 5 mm, a sub-structure weave wavelength of between 0.05 mm and 50 mm, a weave amplitude of between 0.05 mm and 50 mm, a weave pattern which may be square, plain, satin, twill or other patterns, and a weave periodicity which may be uniform or random.
  • the wire weave sub-structure of interconnect 30, 32 may be composed of wires of different diameters and/or alloys in different places to facilitate functionality.
  • separator- plate 24 can advantageously be bonded to anode-side interconnect 32 and cathode-side interconnect 30 through various methods to produce high-strength interfaces therebetween.
  • such joints or components can be bonded, welded or brazed together, or can be secured together in other manners which would be well known to a person of ordinary skill in the art.
  • the wire weave sub-structure and three-dimensional superstructure of the interconnects in accordance with the present invention advantageously serves to alleviate stresses at the anode and cathode interfaces, and minimizes fracture of the interface and the cells themselves.
  • a compliant seal is further advantageously provided for sealing between edges of bipolar plate 14 and adjacent fuel cells 12.
  • the seal design is provided in the form of a rail or spacer 44 defining therein a groove 46, and a seal member 48 positioned in groove 46 and compressed between bipolar plate 14 and adjacent fuel cells 12 to provide the desired seal therebetween.
  • a compression stop 50 is provided to control the amount of deflection of the compliant seals and to advantageously assemble compliant interconnects, compliant seals and all other elements of the stack.
  • seal member 48 is advantageously provided as a compliant or compressible member formed from a suitable material, preferably alumina fibers. Alumina is most desirable in accordance with the present invention because alumina does not contaminate the fuel cell as do other seal materials which have conventionally been used, such as glass, glass-ceramics and the like.
  • seal member 48 is advantageously provided as compliant alumina fibers which can preferably be impregnated with another material selected so as to provide substantial gas impermeability of seal member 48 while nevertheless allowing for compliance or compressibility thereof.
  • seal member 48-in accordance with the present-invention can- advantageously be impregnated with a material selected from the group consisting of zirconia, alumina, yttrium aluminum garnate, alumino-silicate and magnesium silicate ceramics, and similar oxides, and combinations thereof, and it is preferred that seal member 48 be provided so as to reduce permeability to gas.
  • Seal member 48 can advantageously be provided having a fiber architecture such as tows, yarns, fiber weave architecture and the like. Such architectures can be loaded with secondary particles within the fibers as discussed above so as to provide desired seal properties. Further, rail/spacer 44 and compression stop 50 is provided having a height and groove depth which are selected to provide for additional decoupling of various parameters which are conventionally required to be related. [0071] It should be noted that a significant parameter is the response of the interconnect and seal to the clamping compressive load which must be applied to the fuel cell stack as schematically illustrated in Figure 1.
  • Figure 1 shows a compressive load applied to the top and bottom of assembly 10 which compressive load is advantageously selected to provide for sufficient interconnect bonding and sufficiently reduced leakage in the seals while nevertheless allowing micro- sliding in the seal area to relieve thermal mismatch stresses and to minimize compressive creep of the interconnects.
  • the system of the present invention provides for cells and interconnects having less stringent dimensional tolerances since the interconnect provides out-of-plane compliance and, therefore, increased dimensional freedom. Further, the provision of fixed thickness rail/spacers 44 and compression stops 50 ensures decoupling of the sealing and interconnection requirements and therefore provides substantial flexibility for building stacks that are based upon stable and compatible materials.
  • an interconnect superstructure and compliant seal assembly have been provided which advantageously allow for reduced stringency in tolerances in manufacture and assembly of solid oxide fuel cell stacks, and further which reduce the stresses conveyed between various components of the stack, thereby advantageously decoupling different design concerns of the stack and allowing selection of materials to provide long stack life.
  • the invention is not limited to the illustrations described and shown herein, which are deemed to be merely illustrative of the best modes of carrying out the invention, and which are susceptible of modification of form, size, arrangement of parts and details of operation. The invention rather is intended to encompass all such modifications which are within its spirit and scope.

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  • 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 une interconnexion destinée à une pile à combustible à oxyde solide comprenant une superstructure compliante dotée d'une première partie définissant une zone de contact de plaque de séparateur et une seconde partie définissant une zone de contact d'électrode, ladite superstructure étant poreuse. Dans un mode de réalisation, cette superstructure est définie par une pluralité de substructures compliantes prévues dans un premier sens et une pluralité de substructures compliantes prévues dans un second sens afin de définir une structure tissée.
EP04707406A 2003-01-31 2004-02-02 Interconnexions compliantes, resistant aux contraintes pour empilement de pile a combustible a oxyde solide Withdrawn EP1595304A4 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US758843 2001-01-11
US44402503P 2003-01-31 2003-01-31
US444025P 2003-01-31
US45489903P 2003-03-14 2003-03-14
US454899P 2003-03-14
US10/758,843 US20040200187A1 (en) 2002-11-27 2004-01-16 Compliant, strain tolerant interconnects for solid oxide fuel cell stack
PCT/US2004/002865 WO2004070858A2 (fr) 2003-01-31 2004-02-02 Interconnexions compliantes, resistant aux contraintes pour empilement de pile a combustible a oxyde solide

Publications (2)

Publication Number Publication Date
EP1595304A2 true EP1595304A2 (fr) 2005-11-16
EP1595304A4 EP1595304A4 (fr) 2012-02-15

Family

ID=32854298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04707406A Withdrawn EP1595304A4 (fr) 2003-01-31 2004-02-02 Interconnexions compliantes, resistant aux contraintes pour empilement de pile a combustible a oxyde solide

Country Status (6)

Country Link
US (1) US20040200187A1 (fr)
EP (1) EP1595304A4 (fr)
JP (1) JP2007524956A (fr)
KR (1) KR20050096960A (fr)
CA (1) CA2514488A1 (fr)
WO (1) WO2004070858A2 (fr)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8158057B2 (en) 2005-06-15 2012-04-17 Ati Properties, Inc. Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells
US7981561B2 (en) 2005-06-15 2011-07-19 Ati Properties, Inc. Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells
US7977004B2 (en) * 2003-01-31 2011-07-12 Utc Fuel Cells, Llc. Compliant seals for solid oxide fuel cell stack
WO2005034277A1 (fr) 2003-09-29 2005-04-14 Utc Fuel Cells, Llc Empilement conforme de piles a combustible planes d'oxyde solide
US20050136312A1 (en) * 2003-12-22 2005-06-23 General Electric Company Compliant fuel cell system
JP2005209470A (ja) * 2004-01-22 2005-08-04 Equos Research Co Ltd 燃料電池
JP4218569B2 (ja) * 2004-03-30 2009-02-04 株式会社エクォス・リサーチ セパレータ及びそれを用いた燃料電池
US7803493B2 (en) * 2004-09-29 2010-09-28 General Electric Company Fuel cell system with separating structure bonded to electrolyte
DE102004047761A1 (de) 2004-09-30 2006-04-27 Siemens Ag Hochtemperatur-Brennstoffzellenanlage und Verfahren zur Herstellung von Kontaktierungselementen für eine derartige Brennstoffzellenanlage
JP2008522370A (ja) * 2004-11-30 2008-06-26 ザ、リージェンツ、オブ、ザ、ユニバーシティ、オブ、カリフォルニア 電気化学装置用封止ジョイント構造
AU2005327925B2 (en) 2004-11-30 2011-01-27 The Regents Of The University Of California Joining of dissimilar materials
JP4992188B2 (ja) * 2005-03-11 2012-08-08 株式会社エクォス・リサーチ セパレータユニット及び燃料電池スタック
JP4887639B2 (ja) * 2005-03-11 2012-02-29 株式会社エクォス・リサーチ セパレータユニット及び燃料電池スタック
US20090220833A1 (en) * 2005-09-21 2009-09-03 Jones Eric T Fuel Cell Device
US7951509B2 (en) * 2006-04-03 2011-05-31 Bloom Energy Corporation Compliant cathode contact materials
US8691474B2 (en) * 2006-04-03 2014-04-08 Bloom Energy Corporation Fuel cell stack components and materials
WO2008016345A2 (fr) 2006-07-28 2008-02-07 The Regents Of The University Of California Tubes concentriques réunis
KR20100014286A (ko) * 2006-12-27 2010-02-10 유티씨 파워 코포레이션 고체 산화물 연료 전지용 비대칭 더브테일 상호 접속체
US20100129731A1 (en) * 2006-12-28 2010-05-27 Utc Power Corporation Multi-wire, long-life interconnects for fuel cell stacks
DE102007016905A1 (de) * 2007-04-02 2008-10-09 Staxera Gmbh Interkonnektoranordnung und Verfahren zur Herstellung einer Kontaktanordnung für einen Brennstoffzellenstapel
US20090142639A1 (en) * 2007-11-29 2009-06-04 Steven Joseph Gregorski Seal system for solid oxide fuel cell and method of making
MY147805A (en) 2008-04-18 2013-01-31 Univ California Integrated seal for high-temperature electrochemical device
CN102224625A (zh) * 2008-11-21 2011-10-19 Utc电力公司 具有包括镍基合金的刚化支撑的固态氧化物燃料电池
US8835074B2 (en) 2009-01-22 2014-09-16 Ballard Power Systems Inc. Solid oxide fuel cell having metal support with a compliant porous nickel layer
TWI479730B (zh) * 2009-03-20 2015-04-01 Bloom Energy Corp 不碎裂之固態氧化物燃料電池之電解質
WO2012033491A1 (fr) 2010-09-09 2012-03-15 Utc Power Corporation Revêtement de pile à combustible
TWI552417B (zh) 2011-11-17 2016-10-01 博隆能源股份有限公司 對氧化鋯為主之電解質提供抗腐蝕性之多層塗層
US8962219B2 (en) 2011-11-18 2015-02-24 Bloom Energy Corporation Fuel cell interconnects and methods of fabrication
US9452475B2 (en) 2012-03-01 2016-09-27 Bloom Energy Corporation Coatings for SOFC metallic interconnects
US9847520B1 (en) 2012-07-19 2017-12-19 Bloom Energy Corporation Thermal processing of interconnects
WO2014036058A1 (fr) 2012-08-29 2014-03-06 Bloom Energy Corporation Interconnexion pour empilement de piles à combustible
FR2996065B1 (fr) 2012-09-26 2017-02-24 Commissariat Energie Atomique Composant constituant un interconnecteur d'electrolyseur eht ou de pile a combustible sofc et procedes de realisation associes
US9478812B1 (en) 2012-10-17 2016-10-25 Bloom Energy Corporation Interconnect for fuel cell stack
US9673457B2 (en) 2012-11-06 2017-06-06 Bloom Energy Corporation Interconnect and end plate design for fuel cell stack
TWI621302B (zh) 2013-05-16 2018-04-11 博隆能源股份有限公司 用於固體氧化物燃料電池堆的抗腐蝕障壁層及其製造方法
CA2924499A1 (fr) 2013-10-01 2015-04-09 Bloom Energy Corporation Distribution de poudre preformee a une machine a presser la poudre
TWI632728B (zh) 2013-11-27 2018-08-11 博隆能源股份有限公司 具有隨時間之電壓縮減減少的燃料電池互連體及相關方法
US10079393B1 (en) 2014-01-09 2018-09-18 Bloom Energy Corporation Method of fabricating an interconnect for a fuel cell stack
WO2015130644A1 (fr) 2014-02-25 2015-09-03 Bloom Energy Corporation Composition et traitement d'interconnexions métalliques pour empilements de sofc
US9923211B2 (en) 2014-04-24 2018-03-20 Bloom Energy Corporation Fuel cell interconnect with reduced voltage degradation over time
US10270118B2 (en) * 2015-05-25 2019-04-23 Nissan Motor Co., Ltd. Solid oxide fuel cell
US10763533B1 (en) 2017-03-30 2020-09-01 Bloom Energy Corporation Solid oxide fuel cell interconnect having a magnesium containing corrosion barrier layer and method of making thereof
DE102017210664A1 (de) * 2017-06-23 2018-12-27 Robert Bosch Gmbh Brennstoffzelle
CN110010379A (zh) * 2019-05-10 2019-07-12 东莞市爱德光设计有限公司 基于承载器应用的铝电解电容素子装配方法
US11561243B2 (en) 2019-09-12 2023-01-24 International Business Machines Corporation Compliant organic substrate assembly for rigid probes
US11322473B2 (en) 2019-09-12 2022-05-03 International Business Machines Corporation Interconnect and tuning thereof
DE102020211640A1 (de) * 2020-09-17 2022-03-17 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffzelle für eine Brennstoffzelleneinrichtung, Brennstoffzelleneinrichtung und Verfahren zum Herstellen einer Brennstoffzelle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389467A (en) * 1979-12-27 1983-06-21 The United States Of America As Represented By The United States Department Of Energy Porous electrolyte retainer for molten carbonate fuel cell
EP0410159A1 (fr) * 1989-07-24 1991-01-30 Asea Brown Boveri Ag Collecteur de courant pour pile à combustible fonctionnant à haute température
EP0432381A1 (fr) * 1989-10-12 1991-06-19 Asea Brown Boveri Ag Disposition d'éléments de construction pour conduire le courant entre des cellules à combustible céramiques fonctionnant à haute température
US5064734A (en) * 1989-10-27 1991-11-12 Asea Brown Boveri Ltd. Current-transmitting components for stacked high-temperature fuel cells and method of producing them
DE19517443A1 (de) * 1995-05-12 1996-11-14 Mtu Friedrichshafen Gmbh Korrosionsbeständiger Stromkollektor und Verfahren zur Herstellung eines solchen
WO1999013522A1 (fr) * 1997-09-05 1999-03-18 Ceramic Fuel Cells Limited Conductibilite electrique dans un ensemble pile a combustible
US20020048700A1 (en) * 2000-10-23 2002-04-25 Materials And Systems Research, Inc. Internally manifolded, planar solid oxide fuel cell (SOFC) stack with an inexpensive interconnect
EP1294035A2 (fr) * 2001-09-13 2003-03-19 Ngk Insulators, Ltd. Elément de maintien pour une cellule électrochimique, structure correspondante de maintien, un système électrochimique et un dispositif de connection pour cellules électrochimiques
EP1434294A1 (fr) * 2002-11-27 2004-06-30 Delphi Technologies, Inc. Collecteur de courant souple pour l'anode et la cathode d'une pile à combustible

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404267A (en) * 1982-04-26 1983-09-13 General Electric Company Anode composite for molten carbonate fuel cell
US4629537A (en) * 1985-05-17 1986-12-16 Hsu Michael S Compact, light-weight, solid-oxide electrochemical converter
EP0378812A1 (fr) * 1989-01-18 1990-07-25 Asea Brown Boveri Ag Agencement de cellules à combustible à base d'un électrolyte solide constitué d'oxyde de zircon stabilisé fonctionnant à haute température pour obtenir une puissance maximale
EP0446680A1 (fr) * 1990-03-15 1991-09-18 Asea Brown Boveri Ag Collecteur de courant pour l'amenée du courant entre des cellules à combustible voisines empilées fonctionnant à haute température
US4997727A (en) * 1990-05-14 1991-03-05 Asea Brown Boveri Ag Stack of flat, plane high-temperature fuel cells assembled into a stack
US5069987A (en) * 1990-07-06 1991-12-03 Igr Enterprises, Inc. Solid oxide fuel cell assembly
US5273837A (en) * 1992-12-23 1993-12-28 Corning Incorporated Solid electrolyte fuel cells
EP0609697A1 (fr) * 1993-02-01 1994-08-10 Osaka Gas Co., Ltd. Assemblage de piles à combustible et méthode de fabrication
US5424144A (en) * 1993-10-21 1995-06-13 M-C Power Corporation One piece separator plate with insert ring step design
DE4410711C1 (de) * 1994-03-28 1995-09-07 Forschungszentrum Juelich Gmbh Metallische bipolare Platte für HT-Brennstoffzellen und Verfahren zur Herstellung desselben
US5496655A (en) * 1994-10-12 1996-03-05 Lockheed Idaho Technologies Company Catalytic bipolar interconnection plate for use in a fuel cell
US5549983A (en) * 1996-01-22 1996-08-27 Alliedsignal Inc. Coflow planar fuel cell stack construction for solid electrolytes
US5702837A (en) * 1996-02-05 1997-12-30 Alliedsignal Inc. Bonding materials for anode to anode bonding and anode to interconnect bonding in solid oxide fuel cells
AUPO724997A0 (en) * 1997-06-10 1997-07-03 Ceramic Fuel Cells Limited A fuel cell assembly
US6054231A (en) * 1998-07-24 2000-04-25 Gas Research Institute Solid oxide fuel cell interconnector
US6296962B1 (en) * 1999-02-23 2001-10-02 Alliedsignal Inc. Design for solid oxide fuel cell stacks
US6265095B1 (en) * 1999-03-01 2001-07-24 Sofco Interconnect for solid oxide fuel cells
JP2001068132A (ja) * 1999-08-25 2001-03-16 Tokyo Gas Co Ltd 集電板およびそれを用いた固体電解質燃料電池
US6383677B1 (en) * 1999-10-07 2002-05-07 Allen Engineering Company, Inc. Fuel cell current collector
US6291089B1 (en) * 1999-10-26 2001-09-18 Alliedsignal Inc. Radial planar fuel cell stack construction for solid electrolytes
US6379831B1 (en) * 2000-08-02 2002-04-30 Siemens Westinghouse Power Corporation Expanded nickel screen electrical connection supports for solid oxide fuel cells
JP2003163016A (ja) * 2001-09-13 2003-06-06 Ngk Insulators Ltd 電気化学装置および電気化学装置用導電性接続部材

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389467A (en) * 1979-12-27 1983-06-21 The United States Of America As Represented By The United States Department Of Energy Porous electrolyte retainer for molten carbonate fuel cell
EP0410159A1 (fr) * 1989-07-24 1991-01-30 Asea Brown Boveri Ag Collecteur de courant pour pile à combustible fonctionnant à haute température
EP0432381A1 (fr) * 1989-10-12 1991-06-19 Asea Brown Boveri Ag Disposition d'éléments de construction pour conduire le courant entre des cellules à combustible céramiques fonctionnant à haute température
US5064734A (en) * 1989-10-27 1991-11-12 Asea Brown Boveri Ltd. Current-transmitting components for stacked high-temperature fuel cells and method of producing them
DE19517443A1 (de) * 1995-05-12 1996-11-14 Mtu Friedrichshafen Gmbh Korrosionsbeständiger Stromkollektor und Verfahren zur Herstellung eines solchen
WO1999013522A1 (fr) * 1997-09-05 1999-03-18 Ceramic Fuel Cells Limited Conductibilite electrique dans un ensemble pile a combustible
US20020048700A1 (en) * 2000-10-23 2002-04-25 Materials And Systems Research, Inc. Internally manifolded, planar solid oxide fuel cell (SOFC) stack with an inexpensive interconnect
EP1294035A2 (fr) * 2001-09-13 2003-03-19 Ngk Insulators, Ltd. Elément de maintien pour une cellule électrochimique, structure correspondante de maintien, un système électrochimique et un dispositif de connection pour cellules électrochimiques
EP1434294A1 (fr) * 2002-11-27 2004-06-30 Delphi Technologies, Inc. Collecteur de courant souple pour l'anode et la cathode d'une pile à combustible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004070858A2 *

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CA2514488A1 (fr) 2004-08-19
KR20050096960A (ko) 2005-10-06
JP2007524956A (ja) 2007-08-30
WO2004070858A3 (fr) 2004-10-07
US20040200187A1 (en) 2004-10-14
WO2004070858A2 (fr) 2004-08-19
EP1595304A4 (fr) 2012-02-15
WO2004070858A9 (fr) 2004-11-18

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