WO2024143264A1 - 電気化学セル - Google Patents

電気化学セル Download PDF

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Publication number
WO2024143264A1
WO2024143264A1 PCT/JP2023/046401 JP2023046401W WO2024143264A1 WO 2024143264 A1 WO2024143264 A1 WO 2024143264A1 JP 2023046401 W JP2023046401 W JP 2023046401W WO 2024143264 A1 WO2024143264 A1 WO 2024143264A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode layer
layer
hydrogen electrode
metal support
recess
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.)
Ceased
Application number
PCT/JP2023/046401
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
誠 大森
真司 藤崎
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP2024559501A priority Critical patent/JP7668971B2/ja
Publication of WO2024143264A1 publication Critical patent/WO2024143264A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C25B1/042—Hydrogen or oxygen by electrolysis of water by electrolysis of steam
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/23—Carbon monoxide or syngas
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
    • 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 an electrochemical cell.
  • electrochemical cells electrolysis cells, fuel cells, etc.
  • the electrochemical cell described in Patent Document 1 has a cell body in which a first electrode layer, an electrolyte layer, and a second electrode layer are laminated in this order on the main surface of a metal support.
  • the metal support is made of a metal material such as stainless steel.
  • the heat resistance of the metal support is low, it is difficult to form the first electrode layer on the main surface of the metal support at high temperatures. Therefore, there is a limit to how much strength the porous microstructure of the first electrode layer can be improved.
  • the first electrode layer may be damaged (cracked or peeled off) by the compressive force applied from the electrolyte layer, which is a dense body disposed on the first electrode layer.
  • the electrochemical cell according to the second aspect of the present invention is the same as the first aspect, and in the cross section, the apex of the contact surface is located at the center of the first electrode layer in the planar direction.
  • the electrochemical cell according to the third aspect of the present invention is the electrochemical cell according to the first or second aspect, in which the metal support has a recess formed in the first main surface, and at least a portion of the first electrode layer is disposed within the recess.
  • the electrochemical cell according to the fourth aspect of the present invention is the same as the third aspect, and in a cross section along the thickness direction of the metal support, the boundary between the side peripheral surface and the bottom surface of the recess is rounded.
  • the present invention provides an electrochemical cell that can suppress damage to the first electrode layer.
  • FIG. 1 is a plan view of an electrolysis cell according to an embodiment.
  • FIG. 2 is a cross-sectional view taken along line AA of FIG.
  • FIG. 3 is a cross-sectional view of an electrolysis cell according to the first modification.
  • FIG. 4 is a cross-sectional view of an electrolysis cell according to the second modification.
  • the electrolysis cell 100 includes a metal support 10, a cell body 20, and a flow path member 30.
  • the first main surface 11 is the main surface on the cell main body 20 side.
  • the first main surface 11 is formed in a planar shape.
  • the cell main body 20 is joined to the first main surface 11.
  • a recess 13 is formed in the first main surface 11. Therefore, the first main surface 11 is formed in a ring shape when viewed in a plane.
  • the bottom surface S1 is in contact with the hydrogen electrode layer 1.
  • the bottom surface S1 covers the metal support 10 side of the hydrogen electrode layer 1.
  • the bottom surface S1 is disposed between the first main surface 11 and the second main surface 12 in the Z-axis direction.
  • the Z-axis direction is a direction perpendicular to each of the X-axis direction and the Y-axis direction, and is an example of the "thickness direction" according to the present invention.
  • the bottom surface S1 is formed in a flat shape.
  • the side peripheral surface S2 is connected to the outer edge of the bottom surface S1 and the inner edge of the first main surface 11.
  • the side peripheral surface S2 is formed in an annular shape.
  • the side peripheral surface S2 contacts the hydrogen electrode layer 1.
  • the side peripheral surface S2 covers the side circumference of the hydrogen electrode layer 1.
  • the depth of the recess 13 in the Z-axis direction is not particularly limited, but can be 1% or more and 50% or less of the thickness of the metal support 10 in the Z-axis direction.
  • the metal support 10 is made of a metal material.
  • the metal support 10 is made of an alloy material containing Cr (chromium).
  • Examples of such metal materials include Fe-Cr alloy steel (stainless steel, etc.) and Ni-Cr alloy steel.
  • Cr content in the metal support 10 can be 4% by mass or more and 30% by mass or less.
  • the hydrogen electrode layer 1 fills the recess 13. That is, the entire hydrogen electrode layer 1 is disposed within the recess 13. Therefore, as shown in FIG. 2, the hydrogen electrode layer 1 is formed to follow the contour of the recess 13.
  • the hydrogen electrode layer 1 contacts the bottom surface S1 and the side surface S2 of the recess 13. Therefore, the bottom surface S1 and the side surface S2 of the recess 13 are the interfaces between the hydrogen electrode layer 1 and the metal support 10.
  • the method for forming the electrolyte layer 3 is not particularly limited, and methods such as baking, spray coating, PVD, and CVD can be used.
  • reaction prevention layer 4 The reaction prevention layer 4 is disposed between the electrolyte layer 3 and the oxygen electrode layer 5. The reaction prevention layer 4 is disposed on the opposite side of the electrolyte layer 3 from the hydrogen electrode layer 1. The reaction prevention layer 4 prevents the constituent elements of the electrolyte layer 3 from reacting with the constituent elements of the oxygen electrode layer 5 to form a layer with high electrical resistance.
  • the reaction prevention layer 4 is made of an oxide ion conductive material.
  • the reaction prevention layer 4 can be made of, for example, GDC, SDC, etc.
  • the method for forming the oxygen electrode layer 5 is not particularly limited, and a firing method, a spray coating method, a PVD method, a CVD method, etc. can be used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Sustainable Development (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
PCT/JP2023/046401 2022-12-27 2023-12-25 電気化学セル Ceased WO2024143264A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2024559501A JP7668971B2 (ja) 2022-12-27 2023-12-25 電気化学セル

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022209930 2022-12-27
JP2022-209930 2022-12-27

Publications (1)

Publication Number Publication Date
WO2024143264A1 true WO2024143264A1 (ja) 2024-07-04

Family

ID=91717911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/046401 Ceased WO2024143264A1 (ja) 2022-12-27 2023-12-25 電気化学セル

Country Status (2)

Country Link
JP (1) JP7668971B2 (https=)
WO (1) WO2024143264A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007134202A (ja) * 2005-11-11 2007-05-31 Daihatsu Motor Co Ltd 燃料電池及びその製造方法
JP2008029915A (ja) * 2006-07-26 2008-02-14 Toyota Motor Corp 水素分離装置
JP2016012413A (ja) * 2014-06-27 2016-01-21 日産自動車株式会社 膜電極接合体及びこれに使用する接着剤塗布用マスク
JP2019210543A (ja) * 2018-06-04 2019-12-12 パナソニックＩｐマネジメント株式会社 電気化学式ポンプ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5613865B1 (ja) * 2013-03-26 2014-10-29 パナソニック株式会社 燃料電池スタック
JP2017220299A (ja) * 2016-06-03 2017-12-14 トヨタ紡織株式会社 エンドプレート
KR20180027918A (ko) * 2016-09-07 2018-03-15 한국과학기술원 고성능 고체산화물연료전지 일체화 모듈
KR102144191B1 (ko) * 2018-11-02 2020-08-12 한양대학교 산학협력단 교체가 용이한 연료전지 스택유닛 및 그 제조방법
CN113745531A (zh) * 2021-09-14 2021-12-03 北京思伟特新能源科技有限公司 一种高性能固体氧化物电解池及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007134202A (ja) * 2005-11-11 2007-05-31 Daihatsu Motor Co Ltd 燃料電池及びその製造方法
JP2008029915A (ja) * 2006-07-26 2008-02-14 Toyota Motor Corp 水素分離装置
JP2016012413A (ja) * 2014-06-27 2016-01-21 日産自動車株式会社 膜電極接合体及びこれに使用する接着剤塗布用マスク
JP2019210543A (ja) * 2018-06-04 2019-12-12 パナソニックＩｐマネジメント株式会社 電気化学式ポンプ

Also Published As

Publication number Publication date
JP7668971B2 (ja) 2025-04-25
JPWO2024143264A1 (https=) 2024-07-04

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