WO2012133086A1 - Élément liant pour pile à combustible à oxyde solide, pile à combustible à oxyde solide, et module de pile à combustible à oxyde solide - Google Patents

Élément liant pour pile à combustible à oxyde solide, pile à combustible à oxyde solide, et module de pile à combustible à oxyde solide Download PDF

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WO2012133086A1
WO2012133086A1 PCT/JP2012/057284 JP2012057284W WO2012133086A1 WO 2012133086 A1 WO2012133086 A1 WO 2012133086A1 JP 2012057284 W JP2012057284 W JP 2012057284W WO 2012133086 A1 WO2012133086 A1 WO 2012133086A1
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solid oxide
fuel cell
layer
oxide fuel
glass ceramic
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PCT/JP2012/057284
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English (en)
Japanese (ja)
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喜樹 植田
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株式会社村田製作所
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Publication of WO2012133086A1 publication Critical patent/WO2012133086A1/fr

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    • 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
    • H01M8/10—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

  • the present invention relates to a solid oxide fuel cell bonding material, a solid oxide fuel cell, and a solid oxide fuel cell module.
  • fuel cells As a new energy source.
  • the fuel cell include a solid oxide fuel cell (SOFC), a molten carbonate fuel cell, a phosphoric acid fuel cell, and a polymer electrolyte fuel cell.
  • SOFC solid oxide fuel cell
  • molten carbonate fuel cell a molten carbonate fuel cell
  • phosphoric acid fuel cell a phosphoric acid fuel cell
  • polymer electrolyte fuel cell a solid oxide fuel cell
  • solid oxide fuel cells do not necessarily require liquid components, and can be reformed internally when using hydrocarbon fuel. For this reason, research and development on solid oxide fuel cells are actively conducted.
  • a joining material is used for joining a power generation element and a separator.
  • this bonding material for example, the following Patent Document 1 describes a bonding material for a solid oxide fuel cell mainly composed of glass.
  • the bonding material described in Patent Document 1 also shrinks in a direction parallel to the bonding interface when heated to bond the members. For this reason, stress is applied to the members to be joined, for example, warping may occur or the joining material may be damaged.
  • the present invention has been made in view of such points, and an object of the present invention is to join a solid oxide fuel cell having a high joining force and a small shrinkage in a direction parallel to the joining interface at the time of joining. To provide materials.
  • the solid oxide fuel cell bonding material according to the present invention includes a glass ceramic layer and a constraining layer.
  • the glass ceramic layer includes glass ceramics.
  • the constraining layer is laminated on the glass ceramic layer.
  • the constraining layer is made of a metal plate having a plurality of holes.
  • the constraining layer is made of expanded metal, punching metal, wire mesh, or foam metal.
  • expanded metal refers to a group of cuts having a plurality of linear cuts extending in one direction and arranged at intervals along one direction, and perpendicular to the one direction.
  • “Punching metal” refers to a metal plate having a plurality of openings formed in a matrix at predetermined intervals.
  • the “wire mesh” is a plurality of first metal lines that extend in one direction and are spaced apart from each other along another direction perpendicular to the one direction, and extend in the other direction.
  • a plurality of second metal lines that are arranged at intervals along one direction and intersect with the plurality of first metal lines, and the plurality of first metal lines and the plurality of first metal lines
  • the second metal wire is a member fixed in the thickness direction perpendicular to one direction and the other direction.
  • “Foamed metal” refers to a metal member having a plurality of pores inside.
  • the foam metal may have a three-dimensional network structure.
  • the pores may be continuous pores or closed pores.
  • the constraining layer has a melting point of 900 ° C. or higher.
  • the constraining layer does not melt at the firing temperature of the glass ceramic layer.
  • does not melt includes “does not substantially melt”. That is, “does not melt” means that the form of the metal plate having a plurality of through holes is maintained.
  • the glass ceramic includes silica, barium oxide, and alumina.
  • the glass-ceramics include 48 mass% to 75 mass% of Si in terms of SiO 2 and 20 mass% of Ba in terms of BaO. 40% by mass and 5% by mass to 20% by mass in terms of Al 2 O 3 .
  • the glass ceramic layer includes a first glass ceramic layer provided on one main surface of the constraining layer, and a constraining layer. And a second glass ceramic layer provided on the other main surface.
  • the solid oxide fuel cell according to the present invention includes a bonding layer formed by firing the solid oxide fuel cell bonding material according to the present invention.
  • the solid oxide fuel cell includes a plurality of power generation cells.
  • the power generation cell includes a solid oxide electrolyte layer, an air electrode disposed on one main surface of the solid oxide electrolyte layer, and a fuel electrode disposed on the other main surface of the solid oxide electrolyte layer.
  • Have Adjacent power generation cells are joined by a joining layer.
  • the solid oxide fuel cell module according to the present invention includes a bonding layer obtained by firing the solid oxide fuel cell bonding material according to the present invention.
  • the solid oxide fuel cell module includes a fuel cell.
  • the fuel cell includes a solid oxide electrolyte layer, an air electrode disposed on one main surface of the solid oxide electrolyte layer, and a fuel electrode disposed on the other main surface of the solid oxide electrolyte layer.
  • a plurality of power generation cells Adjacent power generation cells are joined by a joining layer.
  • the solid oxide fuel cell module includes a housing and a fuel cell disposed in the housing.
  • the fuel cell and the casing are joined by a joining layer.
  • a bonding material for a solid oxide fuel cell that has a high bonding force and has a small shrinkage in a direction parallel to a bonding interface at the time of bonding, and can suppress generation of warpage and damage to the bonding material. Can be provided.
  • FIG. 1 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a first embodiment.
  • FIG. 2 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a second embodiment.
  • FIG. 3 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a third embodiment.
  • FIG. 4 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a fourth embodiment.
  • FIG. 5 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a fifth embodiment.
  • FIG. 6 is a schematic side view of a solid oxide fuel cell module according to a sixth embodiment.
  • FIG. 7 is a schematic exploded perspective view of the power generation cell according to the sixth embodiment.
  • FIG. 8 is a schematic cross-sectional view of the first bonding layer in the sixth embodiment.
  • FIG. 9 is a schematic cross-sectional view of the second bonding layer in the sixth embodiment.
  • FIG. 10 is a schematic perspective view of a solid oxide fuel cell bonding material according to a first modification.
  • FIG. 11 is a schematic perspective view of a solid oxide fuel cell bonding material according to a second modification.
  • FIG. 12 is a schematic perspective view of a solid oxide fuel cell bonding material according to a third modification.
  • FIG. 1 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a first embodiment.
  • the bonding material 1 is a bonding material used for a solid oxide fuel cell. Specifically, the bonding material 1 is used for, for example, a purpose of bonding power generation cells of a solid oxide fuel cell or bonding a casing of a solid oxide fuel cell module and a fuel cell. It is done.
  • the bonding material 1 has a glass ceramic layer 10 and a constraining layer 11.
  • the glass ceramic layer 10 includes glass ceramics.
  • the glass ceramic layer 10 may be made of only glass ceramics, or may contain, for example, amorphous glass in addition to the glass ceramics.
  • glass ceramics is a mixed material system of glass and ceramics.
  • the glass ceramic contains silica, barium oxide, and alumina.
  • Si is 48 mass% to 75 mass% in terms of SiO 2
  • Ba is 20 mass% to 40 mass% in terms of BaO
  • Al is 5 mass% to 20 mass% in terms of Al 2 O 3. It is preferable that it is included.
  • Glass ceramics further, in terms of 2 mass% to 10 mass% in terms of Mn to MnO, 0.1 wt% to 10 wt% in terms of Ti to TiO 2, and Fe in the Fe 2 O 3 It may further contain 0.1% by mass to 10% by mass. It is preferable that the glass ceramic does not substantially contain Cr oxide or B oxide. In this case, for example, glass ceramics that can be fired at a temperature of 1100 ° C. or lower can be obtained.
  • the thickness of the glass ceramic layer 10 is not particularly limited, but is preferably 10 ⁇ m to 150 ⁇ m, for example, and more preferably 20 ⁇ m to 50 ⁇ m.
  • a constraining layer 11 is laminated on the glass ceramic layer 10.
  • the constraining layer 11 and the glass ceramic layer 10 are in direct contact.
  • the constraining layer 11 is made of a metal plate having a plurality of holes.
  • the constraining layer 11 may be made of a metal plate in which a plurality of through holes penetrating in the thickness direction (z direction) are formed.
  • the constraining layer 11 can be made of, for example, expanded metal, punching metal, wire mesh, foam metal, or the like.
  • a part of the glass ceramic layer 10 diffuses and flows into the constraining layer 11, and the member to be joined and the constraining layer 11 are joined.
  • the expanded metal preferably has a porosity of 30% to 86%, a line width of 30 ⁇ m to 250 ⁇ m, and a thickness of 30 ⁇ m to 500 ⁇ m.
  • the punching metal preferably has a porosity of 10% to 60%, an opening diameter of 50 ⁇ m to 1000 ⁇ m, and a thickness of 30 ⁇ m to 250 ⁇ m.
  • the wire mesh preferably has a porosity of 50% to 85% and a wire diameter of 50 ⁇ m to 200 ⁇ m.
  • the foam metal preferably has a porosity of 10% to 70%.
  • the constraining layer 11 preferably has a melting point of 900 ° C. or higher and does not substantially melt at the firing temperature of the glass ceramic layer 10. For this reason, it is preferable that the constrained layer 11 consists of high melting point metals, such as stainless steel, silver, gold
  • the melting point of the constraining layer 11 is more preferably 1100 ° C. or higher.
  • the thickness of the constraining layer 11 is preferably 30 ⁇ m to 500 ⁇ m, and more preferably 50 ⁇ m to 300 ⁇ m. If the thickness of the constraining layer 11 is less than 30 ⁇ m, the effect of suppressing shrinkage in the surface direction may be reduced. When the thickness of the constraining layer 11 exceeds 500 ⁇ m, it is disadvantageous for the reduction in the height of the solid oxide fuel cell.
  • the bonding material is composed only of a glass ceramic layer. Even in this case, excellent bondability can be realized.
  • the bonding material consisting only of the glass ceramic layer also shrinks in the plane direction during firing. For this reason, a big stress arises in a to-be-joined material and the joining layer formed by baking a glass ceramic layer. Therefore, the material to be bonded may be warped, or a crack or the like may occur in the material to be bonded or the bonding layer. Further, the bonding material is easily peeled off from the material to be bonded. That is, it is difficult to obtain sufficient bonding strength.
  • a constraining layer 11 made of a metal plate in which a plurality of through holes penetrating in the thickness direction is formed is laminated on the glass ceramic layer 10.
  • the constraining layer 11 suppresses shrinkage in the surface direction when the glass ceramic layer 10 is fired. Therefore, when the bonding material 1 of the present embodiment is used, even when the bonding material 1 is baked, the bonding material 1 does not shrink so much in the surface direction. Therefore, it can suppress that a stress is added to a to-be-joined material and a joining layer. As a result, it is possible to suppress warpage of the material to be bonded and occurrence of cracks in the material to be bonded and the bonding layer. Further, the materials to be joined can be joined with high joining strength. That is, the bonding material 1 of the present embodiment has excellent bonding properties and has a small shrinkage during firing.
  • FIG. 2 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a second embodiment.
  • FIG. 3 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a third embodiment.
  • FIG. 4 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a fourth embodiment.
  • FIG. 5 is a schematic cross-sectional view of a solid oxide fuel cell bonding material according to a fifth embodiment.
  • a plurality of at least one of the glass ceramic layer 10 and the constraining layer 11 may be provided.
  • the first glass ceramic layer 10a is provided on one main surface of the constraining layer 11, and the second glass ceramic layer 10b is provided on the other main surface. . Therefore, both surfaces of the bonding material are composed of glass ceramic layers. Accordingly, both the bonding strength between the bonding material to be bonded to one main surface of the bonding material and the bonding material, and the bonding strength between the bonding material to be bonded to the other main surface of the bonding material and the bonding material. Can be increased.
  • constraining layers 11 a and 11 b are provided on both sides of the glass ceramic layer 10. That is, the glass ceramic layer 10 is sandwiched between the constraining layers 11a and 11b. Therefore, shrinkage during firing of the glass ceramic layer 10 can be more effectively suppressed.
  • both constraining layers 11a and 11b are arranged between three glass ceramic layers 10a to 10c.
  • both surfaces of the bonding material are composed of glass ceramic layers. Accordingly, both the bonding strength between the bonding material to be bonded to one main surface of the bonding material and the bonding material, and the bonding strength between the bonding material to be bonded to the other main surface of the bonding material and the bonding material. Can be increased. Further, since the number of constraining layers relative to the number of glass ceramic layers is larger than that of the bonding material shown in FIG. 2, shrinkage during firing of the glass ceramic layers 10a to 10c can be more effectively suppressed.
  • FIG. 6 is a schematic side view of a solid oxide fuel cell module according to a sixth embodiment.
  • the solid oxide fuel cell module (also referred to as a hot module) 3 includes a housing 3a.
  • a solid oxide fuel cell 2 is disposed inside the housing 3a.
  • the fuel cell 2 has a plurality of power generation cells 20. Specifically, the fuel cell 2 has two power generation cells 20.
  • FIG. 7 is a schematic exploded perspective view of the power generation cell according to the sixth embodiment.
  • the power generation cell 20 includes a first separator 40, a power generation element 46, and a second separator 50.
  • the first separator 40, the power generation element 46, and the second separator 50 are stacked in this order.
  • the power generation element 46 is a portion where the aerobic gas supplied from the aerobic gas manifold 44 and the fuel gas supplied from the fuel manifold 45 react to generate power.
  • the aerobic gas can be composed of an aerobic gas such as oxygen or air.
  • the fuel gas may be a gas containing hydrogen gas or hydrocarbon gas such as methane gas.
  • the power generation element 46 includes a solid oxide electrolyte layer 47. It is preferable that the solid oxide electrolyte layer 47 has high ionic conductivity.
  • the solid oxide electrolyte layer 47 can be formed of, for example, stabilized zirconia or partially stabilized zirconia. Specific examples of the stabilized zirconia include 10 mol% yttria stabilized zirconia (10YSZ), 11 mol% scandia stabilized zirconia (11ScSZ), and the like. Specific examples of the partially stabilized zirconia include 3 mol% yttria partially stabilized zirconia (3YSZ).
  • the solid oxide electrolyte layer 47 is, for example, Sm and Gd or the like ceria oxides doped, a LaGaO 3 as a host, La 0 the part of the La and Ga was substituted with Sr and Mg, respectively. It can also be formed of a perovskite oxide such as 8 Sr 0.2 Ga 0.8 Mg 0.2 O (3- ⁇ ) .
  • the solid oxide electrolyte layer 47 is sandwiched between the air electrode layer 48 and the fuel electrode layer 49. That is, the air electrode layer 48 is formed on one main surface of the solid oxide electrolyte layer 47, and the fuel electrode layer 49 is formed on the other main surface.
  • the air electrode layer 48 has an air electrode 48a.
  • the air electrode 48a is a cathode. In the air electrode 48a, oxygen takes in electrons and oxygen ions are formed.
  • the air electrode 48a is preferably porous, has high electron conductivity, and does not easily cause a solid-solid reaction with the solid oxide electrolyte layer 47 and the like at a high temperature.
  • the air electrode 48a can be formed of, for example, scandia-stabilized zirconia (ScSZ), Sn-doped indium oxide, PrCoO 3 oxide, LaCoO 3 oxide, LaMnO 3 oxide, or the like.
  • LaMnO 3 -based oxides include, for example, La 0.8 Sr 0.2 MnO 3 (common name: LSM), La 0.8 Sr 0.2 Co 0.2 Fe 0.8 O 3 (common name: LSCF) and La 0.6 Ca 0.4 MnO 3 (common name: LCM).
  • the air electrode 48a may be made of a mixed material obtained by mixing two or more of the above materials.
  • the fuel electrode layer 49 has a fuel electrode 49a.
  • the fuel electrode 49a is an anode. In the fuel electrode 49a, oxygen ions and fuel gas react to emit electrons.
  • the fuel electrode 49a is preferably porous, has high electron conductivity, and does not easily cause a solid-solid reaction with the solid oxide electrolyte layer 47 and the like at a high temperature.
  • the fuel electrode 49a can be composed of, for example, NiO, yttria stabilized zirconia (YSZ) / nickel metal porous cermet, scandia stabilized zirconia (ScSZ) / nickel metal porous cermet, or the like.
  • the fuel electrode layer 49 may be made of a mixed material obtained by mixing two or more of the above materials.
  • the first separator 40 On the air electrode layer 48 of the power generation element 46, the first separator 40 constituted by the first separator body 41 and the first flow path forming member 42 is disposed.
  • the first separator 40 is formed with an aerobic gas channel 43 for supplying an aerobic gas to the air electrode 48a.
  • the aerobic gas passage 43 extends from the aerobic gas manifold 44 toward the x2 side from the x1 side in the x direction.
  • the constituent material of the first separator 40 is not particularly limited.
  • the first separator 40 can be formed of, for example, stabilized zirconia such as yttria stabilized zirconia, partially stabilized zirconia, or the like.
  • a second separator 50 On the fuel electrode layer 49 of the power generation element 46, a second separator 50 constituted by a second separator body 51 and a second flow path forming member 52 is disposed.
  • the second separator 50 is formed with a fuel gas passage 53 for supplying fuel gas to the fuel electrode 49a.
  • the fuel gas channel 53 extends from the fuel gas manifold 45 toward the y2 side from the y1 side in the y direction.
  • the constituent material of the second separator 50 is not particularly limited.
  • the second separator 50 can be formed of, for example, stabilized zirconia, partially stabilized zirconia, or the like.
  • via-hole electrodes 40a and 50a connected to the air electrode 48a or the fuel electrode 49a are formed.
  • the air electrode 48a and the fuel electrode 49a are drawn out of the power generation cell 20 by the via-hole electrodes 40a and 50a.
  • the two power generation cells 20 are bonded using the bonding material described in the second embodiment.
  • the bonding material of the second embodiment is bonded by the first bonding layer 21a formed by firing.
  • FIG. 8 is a schematic cross-sectional view of the first bonding layer in the sixth embodiment.
  • the first bonding layer 21 a is configured by a laminate of the two fired layers 22 obtained by firing the glass ceramic layer 10 and the constraining layer 11.
  • the constraining layer 11 is sandwiched between two fired layers 22.
  • the fuel cell 2 is joined to the housing 3a.
  • the fuel cell 2 and the housing 3a are joined by a second joining layer 21b.
  • FIG. 9 is a schematic cross-sectional view of the second bonding layer in the sixth embodiment.
  • the second bonding layer 21b is formed by firing the bonding material of the second embodiment, similarly to the first bonding layer 21a.
  • the second bonding layer 21 b is configured by a laminate of the two fired layers 22 obtained by firing the glass ceramic layer 10 and the constraining layer 11.
  • the adjacent power generation cells 20 are joined by the first joining layer 21 a formed by firing the joining material 1.
  • the fuel cell 2 and the housing 3a are joined together by a second joining layer 21b formed by firing the joining material 1. For this reason, it is possible to suppress the warpage of the power generation cell 20 and the generation of cracks in the power generation cell 20.
  • the bonding layers 21a and 21b are formed by bonding the bonding material 1 has been described.
  • the present invention is not limited to this configuration.
  • the bonding layer may be obtained by firing the bonding materials according to the second to fifth embodiments.
  • the solid oxide fuel cell bonding material may be provided in a U shape in plan view. As shown in FIG. 11, the solid oxide fuel cell bonding material may be provided in an L shape in plan view. As shown in FIG. 12, the solid oxide fuel cell bonding material may be provided in an annular shape.
  • Example 1 (Preparation of solid oxide fuel cell bonding material)
  • the solid oxide fuel cell bonding material shown in FIG. 2 was produced.
  • a glass ceramic green sheet to be a glass ceramic layer was produced.
  • polyvinyl butyral as a binder and di-n-as a plasticizer with respect to glass ceramics having a composition of SiO 2 : 57.0 mass%, BaO: 31.0 mass%, and Al 2 O 3 : 12.0 mass%.
  • a slurry was prepared by adding butyl phthalate and toluene and isopropylene alcohol as solvents.
  • a ceramic green sheet having a glass ceramic layer was produced by a doctor blade method.
  • the thickness of the ceramic green sheet of the glass ceramic layer was 60 ⁇ m.
  • the laminate obtained by laminating the ceramic green sheets of the glass ceramic layer was pressed at a temperature of 50 ° C. and a pressure of 500 kgf / cm 2 to produce two glass ceramic layers.
  • the laminated body obtained by laminating the produced glass ceramic layer, the constraining layer and the glass ceramic layer in this order is pressed at a temperature of 50 ° C. and a pressure of 500 kgf / cm 2 to laminate the glass ceramic layer and the constraining layer.
  • a solid oxide fuel cell bonding material was produced.
  • an expanded metal Fe-22Cr ferrite alloy having a porosity of 40% and a thickness of 0.1 mm cut into a predetermined size was used.
  • the laminated structure of the glass ceramic layers is not limited to the lamination of sheets, and the same effect can be obtained even by a paste method, a printing method, an aerosol deposition, or the like.
  • a power generation cell having a configuration substantially similar to that of the power generation cell according to the sixth embodiment was produced by integrally firing the following constituent members.
  • Constituent material of separator 3YSZ (ZrO 2 stabilized with Y 2 O 3 added in 3 mol%)
  • the material of the solid oxide electrolyte layer ScSZ (amount of 10 mol% Sc 2 O 3, 1 mol% of ZrO 2 stabilized with CeO 2)
  • Air electrode constituent material La 0.8 Sr 0.2 MnO 3 powder 60% by mass and ScSZ 40% by mass of carbon powder added 30% by mass
  • Fuel electrode constituent material NiO 65% by mass And 30% by mass of carbon powder with respect to a mixture of 35% by mass of ScSZ.
  • Constituent material of the interconnector on the fuel electrode side Mixture of 70% by mass of NiO and 30% by mass of TiO 2
  • Constituent material of connector Pd—Ag alloy with Pd content of 30 mass%
  • Interconnector diameter 0.2 mm
  • Fuel electrode thickness 30 ⁇ m
  • Air electrode thickness 30 ⁇ m
  • Solid oxide electrolyte layer thickness 30 ⁇ m
  • Thickness of flow path forming member 240 ⁇ m
  • Separator body thickness 360 ⁇ m Press conditions before firing: 1000 kgf / cm 2 Firing temperature: 1150 ° C
  • Example 2 A fuel cell was fabricated in the same manner as in Example 1 except that a punching metal (Fe-22Cr ferrite alloy) with a porosity of 40% and a thickness of 0.1 mm cut into a predetermined size was used for the constraining layer. did.
  • a punching metal Fe-22Cr ferrite alloy
  • Example 3 A fuel cell was produced in the same manner as in Example 1 except that a foamed silver sheet having a porosity of 80% and a thickness of 0.3 mm cut to a predetermined size was used for the constraining layer.
  • Example 4 A fuel cell was produced in the same manner as in Example 1 except that a 40 mesh wire mesh knitted with a 0.15 mm silver wire cut to a predetermined size was used as the constraining layer.

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Abstract

La présente invention concerne un élément liant destiné à une pile à combustible à oxyde solide. Cet élément liant présente une grande cohésion, peu de contraction dans la direction parallèle à l'interface de liaison lors du collage, et tout endommagement envers cet élément liant peut être supprimé, ainsi que toute apparition de déformations. L'élément liant (1) destiné à une pile à combustible à oxyde solide comprend une couche de vitrocéramique (10) et une couche de contrainte (11). La couche de vitrocéramique (10) contient une vitrocéramique. La couche de contrainte (11) est déposée sur la couche de vitrocéramique (10). La couche de contrainte (11) est constituée d'une feuille métallique comportant une pluralité de trous.
PCT/JP2012/057284 2011-03-25 2012-03-22 Élément liant pour pile à combustible à oxyde solide, pile à combustible à oxyde solide, et module de pile à combustible à oxyde solide WO2012133086A1 (fr)

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