ES2141578T3 - Electrodos difusores de gas, cataliticamente activos, que comprenden una estructura fibrosa no tejida. - Google Patents

Electrodos difusores de gas, cataliticamente activos, que comprenden una estructura fibrosa no tejida.

Info

Publication number
ES2141578T3
ES2141578T3 ES97300921T ES97300921T ES2141578T3 ES 2141578 T3 ES2141578 T3 ES 2141578T3 ES 97300921 T ES97300921 T ES 97300921T ES 97300921 T ES97300921 T ES 97300921T ES 2141578 T3 ES2141578 T3 ES 2141578T3
Authority
ES
Spain
Prior art keywords
fibers
catalysting
electrode
sup
gas diffusion
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.)
Expired - Lifetime
Application number
ES97300921T
Other languages
English (en)
Inventor
Jan Denton
John Malcolm Gascoyne
Robert John Potter
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26308820&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2141578(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GBGB9604191.8A external-priority patent/GB9604191D0/en
Priority claimed from GBGB9626802.4A external-priority patent/GB9626802D0/en
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Application granted granted Critical
Publication of ES2141578T3 publication Critical patent/ES2141578T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8803—Supports for the deposition of the catalytic active composition
    • H01M4/8807—Gas diffusion layers
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
    • C25B11/031—Porous electrodes
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
    • C25B11/031—Porous electrodes
    • C25B11/032—Gas diffusion electrodes
    • 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
    • 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
    • H01M4/88—Processes of manufacture
    • H01M4/8817—Treatment of supports before application of the catalytic active composition
    • 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
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • 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
    • H01M4/928—Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state
    • 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
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • 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
    • H01M2004/8684—Negative electrodes
    • 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
    • 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
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0065—Solid 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
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0065—Solid electrolytes
    • H01M2300/0082—Organic polymers
    • 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
    • H01M4/921—Alloys or mixtures with metallic elements
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Composite Materials (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Inert Electrodes (AREA)
  • Fuel Cell (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Catalysts (AREA)

Abstract

EL OBJETO DE LA PRESENTE INVENCION ES SUMINISTRAR UN ELECTRODO DE DIFUSION DE GAS TANTO CON ESTABILIDAD DIMENSIONAL COMO CON FLEXIBILIDAD INCREMENTADAS Y QUE PUEDA POR LO TANTO PRODUCIRSE A UN COSTE MENOR. UN OBJETO ADICIONAL DE LA INVENCION ES SUMINISTRAR UN PROCESO DE MANUFACTURACION MEJORADO QUE SEA CAPAZ DE PRODUCIR UN GRAN NUMERO DE ELECTRODOS Y MEAS A BAJO COSTE UNITARIO, EN GRANDES VOLUMENES Y CON UN GRAN RENDIMIENTO. DE ESTA FORMA, SE SUMINISTRA UN ELECTRODO DE DIFUSION DE GAS QUE COMPRENDE UNA RED NO ENTRETEJIDA DE FIBRAS, UNO O MAS COMPONENTES CATALIZADORES Y AL MENOS UNA SUSTANCIA POLIMERICA QUE SE CARACTERIZA EN QUE EL COMPONENTE CATALIZADOR ESTA EMBEBIDO DENTRO DE LA RED DE FIBRAS. GENERALMENTE, LA RED NO ENTRETEJIDA DE FIBRAS TIENE UNA DENSIDAD MENOR DE 0.3 G/CM{SUP,3}, ADECUADAMENTE MENOR DE 0.2 G/CM{SUP,3} Y PREFERIBLEMENTE MENOR DE 0.1 G/CM{SUP,3}. LAS FIBRAS QUE SON ADECUADAS PARA SU USO EN LA PRESENTE INVENCION INCLUYEN FIBRAS DE CARBONO, DE VIDRIO, DE POLIMERO, DE METALO CERAMICAS, PREFERIBLEMENTE FIBRAS DE CARBONO, VIDRIO, METAL O CERAMICAS, TIPICAMENTE CON DIAMETROS EN LA BANDA DE ENTRE 0.2 {MI}M A 50 {MI}M Y CON LONGITUDES DE ENTRE 0.05MM Y 300MM, ADECUADAMENTE 0.5MM A 150MM. SI SE UTILIZAN FIBRAS DIFERENTES A LAS FIBRAS DE CARBONO U OTRAS FIBRAS ELECTRICAMENTE CONDUCTORAS ES NECESARIO QUE EL COMPONENTE CATALIZADOR COMPRENDA CARBONO Y OPCIONALMENTE UNO O MAS COMPONENTES CATALIZADORES DIFERENTES TALES COMO METAL O UN METAL SOPORTADO SOBRE CARBONO PARA QUE LA ESTRUCTURA FINAL DEL ELECTRODO SEA ELECTRICAMENTE CONDUCTORA. LAS SUBSTANCIAS POLIMERICAS ACTUAN COMO UN AMALGAMADOR PARA MANTENER LA CAPA DE ELECTRODOS UNIDA. DEPENDIENDO DE LA SUSTANCIA POLIMERICA UTILIZADA ESTA TAMBIEN PUEDE ACTUAR PARA SUMINISTRAR PROPIEDADES ESTRUCTURALES ESENCIALES DEL ELECTRODO, TALES COMO EL CONTROL DEL EQUILIBRIO HIDROFOBICO/HIDROFILICO. EJEMPLOS DE DICHOS POLIMEROS INCLUYEN POLITETRAFLUOROETILENEO (PTFE), ETILENO PROPILENOFLUORADO (FEP), POLIETILENO, POLIPROPILENO, ETILENOPROPILENO. EL MATERIAL POLIMERICO TAMBIEN PUEDE ACTUAR PARA SUMINISTRAR EL CAMINO DE CONDUCCION IONICA EN ELECTRODO. TALES POLIMEROS CONDUCTORES DE PROTONES SON POR EJEMPLO LOS MATERIALES DEL ACIDO PERFLUOROSULFONICO, PRODUCIDOS POR "E.I. DUPONT DE NEMOURS", REFERENCIADOS COMO "NAFION". LOS ELECTRODOS DE DIFUSION DE GAS DE LA PRESENTE INVENCION SON DE USO EN DISPOSITIVOS ELECTROQUIMICOS, INCLUYENDO BATERIAS DE METAL-AIRE, SENSORES ELECTROQUIMICOS DE GAS, Y EN ELECTROSINTESIS, Y, PARTICULARMENTE EN CELULAS DE COMBUSTIBLE.
ES97300921T 1996-02-28 1997-02-13 Electrodos difusores de gas, cataliticamente activos, que comprenden una estructura fibrosa no tejida. Expired - Lifetime ES2141578T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9604191.8A GB9604191D0 (en) 1996-02-28 1996-02-28 Water transport in electrodes
GBGB9626802.4A GB9626802D0 (en) 1996-12-23 1996-12-23 Gas diffusion electrodes

Publications (1)

Publication Number Publication Date
ES2141578T3 true ES2141578T3 (es) 2000-03-16

Family

ID=26308820

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97300921T Expired - Lifetime ES2141578T3 (es) 1996-02-28 1997-02-13 Electrodos difusores de gas, cataliticamente activos, que comprenden una estructura fibrosa no tejida.

Country Status (8)

Country Link
US (2) US5865968A (es)
EP (2) EP0791974B2 (es)
JP (1) JP3576739B2 (es)
AU (1) AU717536B2 (es)
BR (1) BR9701086A (es)
CA (1) CA2198553C (es)
DE (2) DE69709784T2 (es)
ES (1) ES2141578T3 (es)

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CA2198553A1 (en) 1997-08-28
AU717536B2 (en) 2000-03-30
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EP0942482B1 (en) 2001-11-21
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CA2198553C (en) 2008-10-28
EP0791974A1 (en) 1997-08-27
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BR9701086A (pt) 1998-11-24
JP3576739B2 (ja) 2004-10-13
JPH09326256A (ja) 1997-12-16
DE69709784T2 (de) 2002-08-08
EP0791974B1 (en) 2000-01-12
US5865968A (en) 1999-02-02
DE69701103D1 (de) 2000-02-17
US6010606A (en) 2000-01-04
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DE69709784D1 (de) 2002-02-21
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