GB1273717A - Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells - Google Patents

Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Info

Publication number
GB1273717A
GB1273717A GB04610/71A GB1461071A GB1273717A GB 1273717 A GB1273717 A GB 1273717A GB 04610/71 A GB04610/71 A GB 04610/71A GB 1461071 A GB1461071 A GB 1461071A GB 1273717 A GB1273717 A GB 1273717A
Authority
GB
United Kingdom
Prior art keywords
tape
relating
methods
electrochemical cells
platens
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
GB04610/71A
Inventor
Joseph Frederick Edwin Ruffell
Kenneth George Tapping
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.)
Durham Chemicals Ltd
Energy Conversion Ltd
Original Assignee
Durham Chemicals Ltd
Energy Conversion Ltd
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 Durham Chemicals Ltd, Energy Conversion Ltd filed Critical Durham Chemicals Ltd
Priority to GB04610/71A priority Critical patent/GB1273717A/en
Publication of GB1273717A publication Critical patent/GB1273717A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • 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

Abstract

1,273,717. Polytetrafluoroethylene films. DURHAM CHEMICALS Ltd., and ENERGY CONVERSION Ltd. 24 April, 1969 [25 April, 1968], No. 14610/71. Divided out of 1,256,706. Headings B5A and B5B. [Also in Division C3] The diffusivity of cellular foraminous unsintered polytetrafluoroethylene tape is reduced by subjecting the tape to pressure between the platens of a press. One surface of the tape may have a layer of electrochemical catalytic material applied thereto prior to the pressing. The tape may be of thickness 0.007 inch and may be subjected to a pressure of 1-3.75 tons/inch<SP>2</SP> with the platens being heated to 40-200‹ C. The tape may be used in electrochemical cell electrodes.
GB04610/71A 1968-04-25 1968-04-25 Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells Expired GB1273717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB04610/71A GB1273717A (en) 1968-04-25 1968-04-25 Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB04610/71A GB1273717A (en) 1968-04-25 1968-04-25 Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Publications (1)

Publication Number Publication Date
GB1273717A true GB1273717A (en) 1972-05-10

Family

ID=10044345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB04610/71A Expired GB1273717A (en) 1968-04-25 1968-04-25 Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Country Status (1)

Country Link
GB (1) GB1273717A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515878A1 (en) * 1981-11-04 1983-05-06 Inst Francais Du Petrole METHOD FOR MANUFACTURING A GAS FUEL CELL ELECTRODE
GB2211190A (en) * 1987-10-19 1989-06-28 Gore & Ass Rapid recoverable ptfe and a process for its manufacture
US4877661A (en) * 1987-10-19 1989-10-31 W. L. Gore & Associates, Inc. Rapidly recoverable PTFE and process therefore
US5026513A (en) * 1987-10-19 1991-06-25 W. L. Gore & Associates, Inc. Process for making rapidly recoverable PTFE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515878A1 (en) * 1981-11-04 1983-05-06 Inst Francais Du Petrole METHOD FOR MANUFACTURING A GAS FUEL CELL ELECTRODE
EP0078748A1 (en) * 1981-11-04 1983-05-11 Institut Français du Pétrole Production method of a fuel cell electrode
GB2211190A (en) * 1987-10-19 1989-06-28 Gore & Ass Rapid recoverable ptfe and a process for its manufacture
US4877661A (en) * 1987-10-19 1989-10-31 W. L. Gore & Associates, Inc. Rapidly recoverable PTFE and process therefore
US5026513A (en) * 1987-10-19 1991-06-25 W. L. Gore & Associates, Inc. Process for making rapidly recoverable PTFE
US5308664A (en) * 1987-10-19 1994-05-03 W. L. Gore & Associates, Inc. Rapidly recoverable PTFE and process therefore

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees