JP4981239B2 - 固体酸化物燃料電池の高性能陰極 - Google Patents
固体酸化物燃料電池の高性能陰極 Download PDFInfo
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- JP4981239B2 JP4981239B2 JP2002581613A JP2002581613A JP4981239B2 JP 4981239 B2 JP4981239 B2 JP 4981239B2 JP 2002581613 A JP2002581613 A JP 2002581613A JP 2002581613 A JP2002581613 A JP 2002581613A JP 4981239 B2 JP4981239 B2 JP 4981239B2
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
- H01M4/905—Metals or alloys specially used in fuel cell operating at high temperature, e.g. SOFC
- H01M4/9066—Metals or alloys specially used in fuel cell operating at high temperature, e.g. SOFC of metal-ceramic composites or mixtures, e.g. cermets
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8605—Porous electrodes
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
- H01M4/9025—Oxides specially used in fuel cell operating at high temperature, e.g. SOFC
- H01M4/9033—Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
- H01M2004/8689—Positive electrodes
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- 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
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- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Description
Claims (17)
- 陽極と、
前記陽極に隣接する電解質と、
前記電解質に隣接した陰極であって、前記電解質に隣接する導電層、前記導電層に隣接する触媒層、及び前記触媒層に隣接する漸変組成層とを具備する陰極と
を具備する固体酸化物燃料電池。 - 前記導電層は、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された材料を含む請求項1記載の固体酸化物燃料電池。
- 前記触媒層は、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された材料を含む請求項1記載の固体酸化物燃料電池。
- 前記触媒層はPt、Pd、Ru、Rh及び遷移金属イオンより成る群から選択された第2の材料を含む請求項3記載の固体酸化物燃料電池。
- 前記漸変組成層は電解質材料と、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された非電解質材料とを含む請求項1記載の固体酸化物燃料電池。
- 前記導電層が理論値の80%を超える第1の密度を有する密な1μm未満の厚さの薄膜として構成されており、前記触媒層が理論値の75%未満である第2の密度を有する1〜2μmの厚さのものとして構成されており、前記漸変組成層が電子伝導度及びイオン伝導度が漸次変化する少なくとも2μmの厚さのものとして構成されている、請求項1乃至請求項6のいずれか1項記載の固体酸化物燃料電池。
- 前記触媒層は前記導電層と前記漸変組成層との間に配置されている請求項1記載の固体酸化物燃料電池。
- 固体酸化物燃料電池における陰極であって、
第1の密度を有する導電層と、
前記第1の密度より小さい第2の密度を有する触媒層と、
電子伝導度及びイオン伝導度が漸次変化することを特徴とする漸変組成層とを具備する陰極であって、前記第1の密度が理論値の80%を超えていて、前記第2の密度が理論値の75%未満であり、前記導電層が0.1〜1μmの厚さを有し、前記触媒層が1〜2μmの厚さを有し、前記漸変組成層が少なくとも2μmの厚さを有する、陰極。 - 固体酸化物燃料電池の陰極を製造する方法であって、
第1の密度を有する導電層を形成することと、
前記導電層に隣接し、前記第1の密度より小さい第2の密度を有する触媒層を形成すること、
前記触媒層に隣接する漸変組成層で電子伝導度の漸次変化を発生させることと、
前記触媒層に隣接する前記漸変組成層でイオン伝導度の漸次変化を発生させること
から成る方法。 - 前記導電層は、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された材料を含む請求項9記載の方法。
- 前記触媒層は、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された材料を含む請求項9記載の方法。
- 前記触媒層はPt、Pd、Ru、Rh及び遷移金属イオンより成る群から選択された材料を含む請求項9記載の方法。
- 前記漸変組成層は、Ca、Sr、Mg及びBaのうちの1つ以上の希土類金属をAとし、遷移金属をBとし、1つ以上の希土類金属をCとし、1つ以上の4価イオンをDとし且つ0から1までの数をdとするとき、ABO3±d、A2B2O5±d及びC2D2O7±dより成る群から選択された材料を含む請求項9記載の方法。
- 前記電子伝導度の漸次変化は前記漸変組成層の底面から上面へ増加する変化である請求項9記載の方法。
- 前記イオン伝導度の漸次変化は前記漸変組成層の底面から上面へ減少する変化である請求項9記載の方法。
- 前記漸変組成層から前記導電層に隣接する電解質の中へ電子を進行させることを更に含む請求項9記載の方法。
- 前記第1の密度が理論値の80%を超えていて、前記第2の密度が理論値の75%未満であり、前記導電層が0.1〜1μmの厚さを有し、前記触媒層が1〜2μmの厚さを有し、前記漸変組成層が少なくとも2μmの厚さを有する、請求項9記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/832,625 | 2001-04-10 | ||
US09/832,625 US6632554B2 (en) | 2001-04-10 | 2001-04-10 | High performance cathodes for solid oxide fuel cells |
PCT/US2002/011090 WO2002084774A2 (en) | 2001-04-10 | 2002-04-05 | High performance cathodes for solid oxide fuel cells |
Publications (3)
Publication Number | Publication Date |
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JP2004531857A JP2004531857A (ja) | 2004-10-14 |
JP2004531857A5 JP2004531857A5 (ja) | 2005-12-22 |
JP4981239B2 true JP4981239B2 (ja) | 2012-07-18 |
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Application Number | Title | Priority Date | Filing Date |
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JP2002581613A Expired - Lifetime JP4981239B2 (ja) | 2001-04-10 | 2002-04-05 | 固体酸化物燃料電池の高性能陰極 |
Country Status (7)
Country | Link |
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US (1) | US6632554B2 (ja) |
EP (1) | EP1425813A2 (ja) |
JP (1) | JP4981239B2 (ja) |
KR (1) | KR20040007492A (ja) |
CN (1) | CN1310366C (ja) |
CA (1) | CA2441769A1 (ja) |
WO (1) | WO2002084774A2 (ja) |
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2001
- 2001-04-10 US US09/832,625 patent/US6632554B2/en not_active Expired - Lifetime
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2002
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- 2002-04-05 JP JP2002581613A patent/JP4981239B2/ja not_active Expired - Lifetime
- 2002-04-05 WO PCT/US2002/011090 patent/WO2002084774A2/en active Application Filing
- 2002-04-05 CA CA002441769A patent/CA2441769A1/en not_active Abandoned
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KR20040007492A (ko) | 2004-01-24 |
JP2004531857A (ja) | 2004-10-14 |
EP1425813A2 (en) | 2004-06-09 |
CN1310366C (zh) | 2007-04-11 |
CN1520623A (zh) | 2004-08-11 |
WO2002084774A2 (en) | 2002-10-24 |
US6632554B2 (en) | 2003-10-14 |
US20020177031A1 (en) | 2002-11-28 |
CA2441769A1 (en) | 2002-10-24 |
WO2002084774A3 (en) | 2004-02-12 |
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