FR2266316A2 - Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis - Google Patents

Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis

Info

Publication number
FR2266316A2
FR2266316A2 FR7410902A FR7410902A FR2266316A2 FR 2266316 A2 FR2266316 A2 FR 2266316A2 FR 7410902 A FR7410902 A FR 7410902A FR 7410902 A FR7410902 A FR 7410902A FR 2266316 A2 FR2266316 A2 FR 2266316A2
Authority
FR
France
Prior art keywords
electrodes
polymer
degrees
electrode
soln
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.)
Granted
Application number
FR7410902A
Other languages
French (fr)
Other versions
FR2266316B2 (en
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Priority to FR7410902A priority Critical patent/FR2266316A2/en
Priority to BE1006495A priority patent/BE826207A/en
Priority to US05/561,501 priority patent/US3967976A/en
Priority to DE19752513431 priority patent/DE2513431A1/en
Priority to IT67766/75A priority patent/IT1030438B/en
Priority to NL7503650A priority patent/NL7503650A/en
Priority to DK132475AA priority patent/DK137737B/en
Priority to GB12724/75A priority patent/GB1489277A/en
Priority to SE7503637A priority patent/SE408607B/en
Priority to JP50037048A priority patent/JPS50129927A/ja
Publication of FR2266316A2 publication Critical patent/FR2266316A2/en
Application granted granted Critical
Publication of FR2266316B2 publication Critical patent/FR2266316B2/fr
Granted 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
    • H01M4/02—Electrodes composed of, or comprising, active material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

An improved process for prepg. electrodes for electro-chemical generators, the electrodes comprising a collecting zone made of a chemically inert conductor embedded in an electrochemically matrix comprising a metal (cpd.) and a partially crosslinked polymer, comprises (A) prepg. a satd. soln. of the polymer in water and adding 5-20% of a crosslinking catalyst, (B) adding at 50-100 degrees C 20-50 pts. wt. of the metal salt, based on polymer, the salt being water-soluble and compatible with the polymer, (C) casting the soln. into a mould contg. the collecting zone of the electrode to completely immerse the latter, (D) cooling the mould to at most -20 degrees C, (E) demoulding the cake and immersing it in an alkaline soln. satd. with the metal oxide, (F) washing the cake with cold water, (G) drying it at 20-60 degrees C and (H) pressing it under 2-10 bars/cm2. The improvement comprises depositing on each of the surfaces of the collecting (1) longitudinal strips (2) whic are non adherent to the electrochemically active part (5) of the electrode to create a gap (6) between part (5) and each strip (2). The process which is partic. applicable to Zn electrodes prevents diffusion of zincate ions and short-circuiting when the electrodes are used during electrolysis. The gaps allow free escape of gas, partic. H2, and thus eliminate formation of blisters on the electrode.
FR7410902A 1974-03-28 1974-03-28 Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis Granted FR2266316A2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7410902A FR2266316A2 (en) 1974-03-28 1974-03-28 Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis
BE1006495A BE826207A (en) 1974-03-28 1975-03-03 ELECTRODES PREPARATION PROCESS FOR ELECTROCHEMICAL GENERATOR
US05/561,501 US3967976A (en) 1974-03-28 1975-03-24 Method for preparing electrodes for an electrochemical storage cell
IT67766/75A IT1030438B (en) 1974-03-28 1975-03-26 PROCEDURE FOR THE PREPARATION OF ELECTRODES FOR ELECTROCHEMICAL GENERATORS
DE19752513431 DE2513431A1 (en) 1974-03-28 1975-03-26 MANUFACTURING PROCESS FOR ELECTRODES OF ELECTROCHEMICAL GENERATORS
NL7503650A NL7503650A (en) 1974-03-28 1975-03-26 PROCESS OF MANUFACTURE OF ELECTRODES FOR ELECTROCHEMICAL GENERATORS.
DK132475AA DK137737B (en) 1974-03-28 1975-03-26 Method for manufacturing accumulator electrodes.
GB12724/75A GB1489277A (en) 1974-03-28 1975-03-26 Electrodes
SE7503637A SE408607B (en) 1974-03-28 1975-03-27 PROCEDURE FOR MANUFACTURING AN ELECTRODE FOR AN ELECTROCHEMIC CELL
JP50037048A JPS50129927A (en) 1974-03-28 1975-03-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7410902A FR2266316A2 (en) 1974-03-28 1974-03-28 Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis

Publications (2)

Publication Number Publication Date
FR2266316A2 true FR2266316A2 (en) 1975-10-24
FR2266316B2 FR2266316B2 (en) 1979-05-25

Family

ID=9136986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7410902A Granted FR2266316A2 (en) 1974-03-28 1974-03-28 Prepn of (zinc) electrodes coated with e.g. PTFE - to provide gaps for gas escape during electrolysis

Country Status (3)

Country Link
BE (1) BE826207A (en)
FR (1) FR2266316A2 (en)
SE (1) SE408607B (en)

Also Published As

Publication number Publication date
SE7503637L (en) 1975-12-15
FR2266316B2 (en) 1979-05-25
BE826207A (en) 1975-09-03
SE408607B (en) 1979-06-18

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