WO2005015675A2 - A solid oxide fuel cell - Google Patents

A solid oxide fuel cell Download PDF

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Publication number
WO2005015675A2
WO2005015675A2 PCT/GB2004/002594 GB2004002594W WO2005015675A2 WO 2005015675 A2 WO2005015675 A2 WO 2005015675A2 GB 2004002594 W GB2004002594 W GB 2004002594W WO 2005015675 A2 WO2005015675 A2 WO 2005015675A2
Authority
WO
WIPO (PCT)
Prior art keywords
porous layer
electrolyte
solid oxide
oxide fuel
dense non
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/GB2004/002594
Other languages
English (en)
French (fr)
Other versions
WO2005015675A3 (en
Inventor
Nigel Thomas Hart
Gary John Wright
Gerard Daniel Agnew
Mark Cassidy
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to JP2006519984A priority Critical patent/JP4751323B2/ja
Priority to DK04742953.5T priority patent/DK1665439T3/da
Priority to AU2004302052A priority patent/AU2004302052B2/en
Priority to CA2530320A priority patent/CA2530320C/en
Priority to ES04742953T priority patent/ES2395341T3/es
Priority to EP04742953A priority patent/EP1665439B8/en
Publication of WO2005015675A2 publication Critical patent/WO2005015675A2/en
Publication of WO2005015675A3 publication Critical patent/WO2005015675A3/en
Priority to US11/312,377 priority patent/US7399546B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • H01M8/10—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
    • 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
    • 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
    • H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the 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
    • H01M2008/1293—Fuel cells with solid oxide electrolytes
    • 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
    • H01M2300/0088—Composites
    • H01M2300/0094—Composites in the form of layered products, e.g. coatings
    • 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
    • H01M8/1226—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 characterised by the supporting layer
    • 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
    • H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
    • H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
    • H01M8/1253—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing zirconium oxide
    • 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
    • H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
    • H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
    • H01M8/1266—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing bismuth oxide
    • 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

  • a SOLID OXIDE FUEL CELL The present invention relates to a solid oxide fuel cell and a solid oxide fuel cell stack.
  • a solid oxide fuel cell comprises an anode electrode, a cathode electrode and an electrolyte between the anode electrode and the cathode electrode.
  • a solid oxide fuel cell stack comprises a plurality of solid oxides connected in electrical series or in electrical parallel arrangements.
  • a gaseous fuel for example hydrogen
  • a gaseous oxidant for example oxygen or air
  • the electrolyte of a solid oxide fuel cell is required to form a physical barrier between the gaseous fuel supplied to the anode electrode and the gaseous oxidant supplied to the cathode electrode.
  • the electrolyte comprises a dense non-porous layer. Any gaseous leak paths through the electrolyte between the anode electrode and the cathode electrode will allow the gaseous fuel and oxidant to come into contact. This leakage produces a reduction in the solid oxide fuel cell performance in terms of fuel utilisation and may detrimental to mechanical integrity and durability of the solid oxide fuel cell. It may even result in combustion of the gaseous fuel in the gaseous oxidant and possibly severe damage to the solid oxide fuel cell.
  • the electrolyte in practice, has defects, or flaws, in its microstructure. These defects, or flaws, may be caused by contamination and/or variability in the manufacturing process. It may be possible to minimise these defects, or flaws, by implementing greater manufacturing process control, however, complete elimination of the defects, or flaws, is likely to result in a tightly controlled manufacturing process and hence an expensive manufacturing process.
  • One possible solution to the problem was to provide a further dense non-porous layer on the existing dense non- porous layer of the electrolyte. However, in practice the original defects in the dense non-porous layer propagate into the further dense non-porous layer resulting in no benefit.
  • the present invention seeks to provide a novel solid oxide fuel cell and a novel solid oxide fuel cell stack, which reduces, preferably overcomes, the above- mentioned problems.
  • the present invention provides a solid oxide fuel cell comprising an anode electrode, a cathode electrode and an electrolyte between the anode electrode and the cathode electrode, the electrolyte comprising a first dense non-porous layer, a second porous layer on the first dense non-porous layer and a third dense non-porous layer on the second porous layer.
  • the electrolyte may comprise a fourth porous layer on the third dense non-porous layer and a fifth dense non- porous layer on the fourth porous layer.
  • a porous layer may be arranged between the electrolyte and the anode electrode.
  • a porous layer may be arranged between the electrolyte and the cathode electrode.
  • the first, second and third layers of the electrolyte have the same composition.
  • At least one of the layers of the electrolyte may comprise gadolinia-doped ceria. All the layers of the electrolyte may comprise gadolinia-doped ceria.
  • At least one of the layers of the electrolyte may comprise scandia-doped zirconia. All the layers of the electrolyte may comprise scandia-doped zirconia.
  • the present invention also provides a solid oxide fuel cell stack may comprise a plurality of solid oxide fuel cells, each solid oxide fuel cell comprising an anode electrode, a cathode electrode and an electrolyte between the anode electrode and the cathode electrode, each electrolyte comprising a first dense non-porous layer, a second porous layer on the first dense non-porous layer and a third dense non-porous layer on the second porous layer.
  • FIG. 1 shows a solid oxide fuel cell stack according to the present invention.
  • Figure 2 shows a further solid oxide fuel cell stack according to the present invention.
  • Figure 3 shows another solid oxide fuel cell stack according to the present invention.
  • a solid oxide fuel cell stack 10 comprises a plurality of solid oxide fuel cells 11.
  • Each solid oxide fuel cell 11 comprises an anode electrode 12, a cathode electrode 14 and an electrolyte 16 between the anode electrode 12 and the cathode electrode 14.
  • a gaseous fuel for example hydrogen
  • a gaseous oxidant for example oxygen or air
  • the solid oxide fuel cells 11 are arranged on a support structure 13 with the anode electrodes 12 in contact with the support structure 13.
  • the support structure 13 has porous regions to allow gaseous fuel to flow to the anode electrodes 12.
  • Adjacent solid oxide fuel cells 11 are connected in series by interconnectors 15, which interconnect an anode electrode 12 of one solid oxide fuel cell 11 with a cathode electrode 14 of an adjacent solid oxide fuel cell 11.
  • the electrolyte 16 comprises a first dense non-porous layer 22, a second porous layer 24 on the first dense non- porous layer 22 and a third dense non-porous layer 26 on the second porous layer 24.
  • the anode electrode 12 is arranged on the first dense non-porous layer 22, between the first dense non-porous layer 22 and the support structure 13, and the cathode electrode 14 is arranged on the third dense non-porous layer 26.
  • a solid oxide fuel cell stack 110 comprises a plurality of solid oxide fuel cells 11.
  • Each solid oxide fuel cell 11 comprises an anode electrode 12, a cathode electrode 14 and an electrolyte 16 between the anode electrode 12 and the cathode electrode 14.
  • a gaseous fuel for example hydrogen
  • a gaseous oxidant for example oxygen or air
  • the solid oxide fuel cells 11 are arranged on a support structure 13 with the anode electrodes 12 in contact with the support structure 13.
  • the support structure 13 is porous regions to allow gaseous fuel to flow to the anode electrodes 12.
  • Adjacent solid oxide fuel cells 11 are connected in series by interconnectors 15, which interconnect an anode electrode 12 of one solid oxide fuel cell 11 with a cathode electrode 14 of an adjacent solid oxide fuel cell 11.
  • the electrolyte 16 comprises a first dense non-porous layer 22, a second porous layer 24 on the first dense non- porous layer 22, a third dense non-porous layer 26 on the second porous layer 24, a fourth porous layer 28 on the third dense non-porous layer 26 and a fifth dense non- porous layer 30 on the fourth porous layer 28.
  • the anode electrode 12 is arranged on the first dense non-porous layer 22, between the first dense non-porous layer 22 and the support structure 13, and the cathode electrode 14 is arranged on the fifth dense non-porous layer 30.
  • the result of this arrangement of electrolyte 16 is that the second porous layer 24 acts as a buffer between the first dense non-porous layer 22 and the third dense non-porous layer 26 as described above with reference to figure 1.
  • the fourth porous layer 28 acts as a buffer between the third dense non-porous layer 26 and the fifth dense non-porous layer 30.
  • a solid oxide fuel cell stack 210 comprises a plurality of solid oxide fuel cells 11.
  • Each solid oxide fuel cell 11 comprises an anode electrode 12, a cathode electrode 14 and an electrolyte 16 between the anode electrode 12 and the cathode electrode 14.
  • a gaseous fuel for example hydrogen
  • a gaseous oxidant for example oxygen or air
  • the solid oxide fuel cells 11 are arranged on a support structure 13 with the anode electrodes 12 in contact with the support structure 13.
  • the support structure 13 is porous regions to allow gaseous fuel to flow to the anode electrodes 12.
  • Adjacent solid oxide fuel cells 11 are connected in series by interconnectors 15, which interconnect an anode electrode 12 of one solid oxide fuel cell 11 with a cathode electrode 14 of an adjacent solid oxide fuel cell 11.
  • the electrolyte 16 comprises a first dense non-porous layer 22, a second porous layer 24 on the first dense non- porous layer 22 and a third dense non-porous layer 26 on the second porous layer 24.
  • a fourth porous layer 32 is arranged on the third dense non-porous layer 26.
  • the anode electrode 12 is arranged on the first dense non-porous layer 22, between the first dense non-porous layer 22 and the support structure 13, and the cathode electrode 14 is arranged on the fourth porous layer 32.
  • the first, second and third layers of the electrolyte may have the same composition or may have different compositions .
  • One of the layers of the electrolyte may comprise yttria stabilised zirconia, 92wt% zirconia and 8wt% yttria, and in some instances all of the layers of the electrolyte comprise yttria stabilised zirconia.
  • the inclusion of the second porous layer of electrolyte increases the ionic resistance across the electrolyte and therefore the use of a higher conductivity electrolyte material is beneficial.
  • Suitable higher conductivity materials for the electrolyte are scandia- doped zirconia and gadolinia-doped ceria.
  • one or all of the layers of the electrolyte may comprise scandia-doped zirconia.
  • one or all of the layers of the electrolyte may comprise gadolinia-doped ceria.
  • the anode electrode, the layers of the electrolyte and the cathode electrode are deposited by screen- printing, spraying, tapecasting or inkjet printing.
  • the fuel cells are generally arranged on a support structure, such that either the anode electrodes are initially deposited on the support structure and then the remaining layers or alternatively the cathode electrodes are deposited on the support structure and then the remaining layers.
  • the support structure may comprise a magnesium aluminate spinel.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (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)
  • Inert Electrodes (AREA)
PCT/GB2004/002594 2003-07-15 2004-06-18 A solid oxide fuel cell Ceased WO2005015675A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2006519984A JP4751323B2 (ja) 2003-07-15 2004-06-18 固体酸化物燃料電池
DK04742953.5T DK1665439T3 (da) 2003-07-15 2004-06-18 Fastoxidbrændselscelle
AU2004302052A AU2004302052B2 (en) 2003-07-15 2004-06-18 A solid oxide fuel cell
CA2530320A CA2530320C (en) 2003-07-15 2004-06-18 A solid oxide fuel cell electrolyte
ES04742953T ES2395341T3 (es) 2003-07-15 2004-06-18 Célula de combustible de óxido sólido
EP04742953A EP1665439B8 (en) 2003-07-15 2004-06-18 A solid oxide fuel cell
US11/312,377 US7399546B2 (en) 2003-07-15 2005-12-21 Solid oxide fuel cell

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0316504.0 2003-07-15
GBGB0316504.0A GB0316504D0 (en) 2003-07-15 2003-07-15 A solid oxide fuel cell

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/312,377 Continuation US7399546B2 (en) 2003-07-15 2005-12-21 Solid oxide fuel cell

Publications (2)

Publication Number Publication Date
WO2005015675A2 true WO2005015675A2 (en) 2005-02-17
WO2005015675A3 WO2005015675A3 (en) 2005-11-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/002594 Ceased WO2005015675A2 (en) 2003-07-15 2004-06-18 A solid oxide fuel cell

Country Status (10)

Country Link
US (1) US7399546B2 (https=)
EP (1) EP1665439B8 (https=)
JP (1) JP4751323B2 (https=)
KR (1) KR100965920B1 (https=)
AU (1) AU2004302052B2 (https=)
CA (1) CA2530320C (https=)
DK (1) DK1665439T3 (https=)
ES (1) ES2395341T3 (https=)
GB (1) GB0316504D0 (https=)
WO (1) WO2005015675A2 (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
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KR100707113B1 (ko) * 2005-12-20 2007-04-16 한국과학기술연구원 고립 전해질을 이용한 단실형 고체 산화물 연료전지
WO2007130552A3 (en) * 2006-05-02 2007-12-21 Lilliputian Systems Inc Systems and methods for stacking fuel cells
WO2008119321A1 (de) * 2007-03-30 2008-10-09 Forschungszentrum Jülich GmbH Schichtsystem für einen elektrolyten einer hochtemperatur-brennstoffzelle sowie verfahren zur herstellung desselben
EP2061108A4 (en) * 2006-08-24 2012-08-01 Kyocera Corp FUEL BATTERY CELL, FUEL BATTERY STACK AND FUEL BATTERY

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JP4773588B1 (ja) * 2010-06-15 2011-09-14 日本碍子株式会社 燃料電池セル
JP5122013B1 (ja) * 2011-09-12 2013-01-16 日本碍子株式会社 燃料電池セル
KR20160068205A (ko) 2014-12-05 2016-06-15 주식회사 엘지화학 고체 산화물 연료 전지 및 이의 제조방법
KR101842319B1 (ko) 2014-12-05 2018-05-14 주식회사 엘지화학 고체 산화물 연료 전지 및 이의 제조방법
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KR101940712B1 (ko) 2018-12-11 2019-01-22 주식회사 엘지화학 고체 산화물 연료 전지 및 이의 제조방법
KR102604327B1 (ko) * 2023-01-13 2023-11-23 주식회사케이세라셀 고체산화물 전해셀용 지르코니아 전해질 및 이의 제조방법

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Publication number Priority date Publication date Assignee Title
KR100707113B1 (ko) * 2005-12-20 2007-04-16 한국과학기술연구원 고립 전해질을 이용한 단실형 고체 산화물 연료전지
WO2007073015A1 (en) * 2005-12-20 2007-06-28 Korea Institute Of Science And Technology Single chamber solid oxide fuel cells with isolated electrolyte
WO2007130552A3 (en) * 2006-05-02 2007-12-21 Lilliputian Systems Inc Systems and methods for stacking fuel cells
JP2009535786A (ja) * 2006-05-02 2009-10-01 リリピューシャン システムズ， インク． 燃料電池をスタックするシステムおよび方法
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EP2061108A4 (en) * 2006-08-24 2012-08-01 Kyocera Corp FUEL BATTERY CELL, FUEL BATTERY STACK AND FUEL BATTERY
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AU2004302052B2 (en) 2009-08-06
EP1665439A2 (en) 2006-06-07
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JP2007516569A (ja) 2007-06-21
DK1665439T3 (da) 2012-11-26
US20060099473A1 (en) 2006-05-11
WO2005015675A3 (en) 2005-11-03
EP1665439B1 (en) 2012-08-29
US7399546B2 (en) 2008-07-15
GB0316504D0 (en) 2003-08-20
EP1665439B8 (en) 2013-02-13
ES2395341T3 (es) 2013-02-12
AU2004302052A1 (en) 2005-02-17
JP4751323B2 (ja) 2011-08-17
CA2530320C (en) 2012-05-08
KR20060030906A (ko) 2006-04-11

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