GB1208498A - Improvements in or relating to an oxygen electrode for fuel cells - Google Patents

Improvements in or relating to an oxygen electrode for fuel cells

Info

Publication number
GB1208498A
GB1208498A GB48771/68A GB4877168A GB1208498A GB 1208498 A GB1208498 A GB 1208498A GB 48771/68 A GB48771/68 A GB 48771/68A GB 4877168 A GB4877168 A GB 4877168A GB 1208498 A GB1208498 A GB 1208498A
Authority
GB
United Kingdom
Prior art keywords
silver
substance
resin
catalytic
fuel cell
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
Application number
GB48771/68A
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.)
Pioneer Research Inc
Original Assignee
Pioneer Research Inc
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 Pioneer Research Inc filed Critical Pioneer Research Inc
Publication of GB1208498A publication Critical patent/GB1208498A/en
Expired 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
    • H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
    • H01M4/8882—Heat treatment, e.g. drying, baking
    • 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
    • H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
    • H01M4/8652—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites as mixture
    • 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
    • H01M4/8663—Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
    • H01M4/8668—Binders
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Inert Electrodes (AREA)

Abstract

1,208,498. Fuel cell electrodes. PIONEER RESEARCH Inc. 15 Oct., 1968 [4 Dec., 1967], No. 48771/68. Heading H1B. [Also in Division C3] A catalytic electrode comprising an electrically semi-conductive mixture of a catalytic silver substance dispersed through a fluorocarbon resin selected from homopolymers and copolymers of perhalogenated fluorine-containing olefines may be prepared by mixing particles of silver carbonate and resin, the amount of resin being at least sufficient to surround the particles, forming the mixture into a desired electrode shape, and then baking the shape at a temperature sufficient to convert the silver carbonate to catalytic silver substance, and to cause the resin to flow about the substance and form a coherent structure. The catalytic silver substance is that form of silver, be it the silver metal or a simple oxide form thereof, that behaves catalytically towards oxygen. It may catalyse a great number of chemical reactions, particularly the oxidation of an appropriate fuel in a fuel cell. The preferred resin is polytetrafluoroethylene. A polyhydric alcohol may be added before baking to give crater-like recesses in the structure. The mixture may be a coating on a substrate of glass cloth impregnated with P.T.F.E. or a substrate comprising sintered particles of P.T.F.E:- The substance may have a reinforcing metal screen embedded into it. The electrode may be used as a cathode in a fuel cell using an electrolyte of pH of at least 7, e.g. an alkali metal hydroxide.
GB48771/68A 1967-12-04 1968-10-15 Improvements in or relating to an oxygen electrode for fuel cells Expired GB1208498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68756267A 1967-12-04 1967-12-04

Publications (1)

Publication Number Publication Date
GB1208498A true GB1208498A (en) 1970-10-14

Family

ID=24760900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48771/68A Expired GB1208498A (en) 1967-12-04 1968-10-15 Improvements in or relating to an oxygen electrode for fuel cells

Country Status (6)

Country Link
BE (1) BE722898A (en)
CH (1) CH532418A (en)
DE (2) DE6803805U (en)
FR (1) FR1590230A (en)
GB (1) GB1208498A (en)
NL (1) NL6815338A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671323A (en) * 1970-01-12 1972-06-20 Westinghouse Electric Corp Hydrophobic layers for gas diffusion electrodes
DE3303779A1 (en) * 1983-02-04 1984-08-16 Hoechst Ag, 6230 Frankfurt METHOD FOR PRODUCING A CATALYTICALLY EFFECTIVE ELECTRODE MATERIAL FOR OXYGEN CONSUMPTION ELECTRODES

Also Published As

Publication number Publication date
DE6803805U (en) 1969-04-24
DE1805019A1 (en) 1969-06-12
FR1590230A (en) 1970-04-13
CH532418A (en) 1973-01-15
BE722898A (en) 1969-04-25
NL6815338A (en) 1969-06-06

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees