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GB1256706A - - Google Patents

Info

Publication number
GB1256706A
GB1256706A GB1973968A GB1256706DA GB1256706A GB 1256706 A GB1256706 A GB 1256706A GB 1973968 A GB1973968 A GB 1973968A GB 1256706D A GB1256706D A GB 1256706DA GB 1256706 A GB1256706 A GB 1256706A
Authority
GB
United Kingdom
Prior art keywords
layer
electrode
hydrophobic
april
permeability
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
GB1973968A
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 filed Critical
Publication of GB1256706A publication Critical patent/GB1256706A/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
    • H01M4/8896—Pressing, rolling, calendering
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inert Electrodes (AREA)
  • Hybrid Cells (AREA)

Abstract

1,256,706. Gas electrodes. DURHAM CHEMICALS Ltd. and ENERGY CONVERSION Ltd. 24 April, 1969 [25 April, 1968], No 19739/68. Heading H1B. An electrode for an electric cell which comprises a layer of foraminous hydrophobic material and an adjacent layer of catalytic material is characterized in that either (a) the gas-diffusion through the hydrophobic layer is such that the limiting current of the electrode is less than 50% of the maximum which could have been achieved from the catalytic material or (b) the permeability of the hydrophobic layer is 0À1 x 10<SP>-6</SP> to 9À0 x 10<SP>-6</SP> cc./sec./cm.<SP>2</SP>/mm. H 2 O. The hydrophobic layer may be P.T.F.E. tape which is compressed to reduce its permeability and optionally impregnated with polystyrene or poly(butyl methacrylate). The electrode may be used in a fuel cell or a battery of metal/oxygen or metal/air cells.
GB1973968A 1968-04-25 1968-04-25 Expired GB1256706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1973968 1968-04-25

Publications (1)

Publication Number Publication Date
GB1256706A true GB1256706A (en) 1971-12-15

Family

ID=10134397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1973968A Expired GB1256706A (en) 1968-04-25 1968-04-25

Country Status (3)

Country Link
DE (1) DE1920688A1 (en)
FR (1) FR2006932A1 (en)
GB (1) GB1256706A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105830A (en) * 1977-08-01 1978-08-08 Union Carbide Corporation Air depolarized cell
DE2812040C2 (en) * 1978-03-20 1985-02-28 Varta Batterie Ag, 3000 Hannover Process for the production of an atmospheric oxygen electrode
FR2504021A1 (en) * 1981-04-17 1982-10-22 Gipelec Low porosity membrane - having areas of high porosity distributed within areas of low or negligible porosity

Also Published As

Publication number Publication date
FR2006932A1 (en) 1970-01-02
DE1920688A1 (en) 1969-11-13

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Legal Events

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