GB725950A - Improvements in or relating to a microporous battery separator and method of making same - Google Patents

Improvements in or relating to a microporous battery separator and method of making same

Info

Publication number
GB725950A
GB725950A GB3020/53A GB302053A GB725950A GB 725950 A GB725950 A GB 725950A GB 3020/53 A GB3020/53 A GB 3020/53A GB 302053 A GB302053 A GB 302053A GB 725950 A GB725950 A GB 725950A
Authority
GB
United Kingdom
Prior art keywords
battery separator
acrylonitrile
copolymers
styrene
polymers
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
GB3020/53A
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.)
Goodrich Corp
Original Assignee
BF Goodrich Corp
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 BF Goodrich Corp filed Critical BF Goodrich Corp
Publication of GB725950A publication Critical patent/GB725950A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/205—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising surface fusion, and bonding of particles to form voids, e.g. sintering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491—Porosity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • 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
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cell Separators (AREA)

Abstract

A microporous battery separator comprises a mass of partially coalesced synthetic resin particles, said mass containing from 40 to 55 per cent intercommunicating voids. Specified resins are the polymers of styrene, acrylonitrile, vinylbromide, and ethylene, their copolymers with each other or with butadiene or vinyl naphthalene. Preferred resins however are the polymers of vinyl chloride and vinylidene chloride, the copolymer thereof and copolymers of either with minor amounts of vinyl fluoride, acrylonitrile or styrene. Preferably from 0.1 to 30 per cent of a liquid plasticizer, e.g. tricresyl phosphate, is also present and may be allowed to remain in the finished product or removed by the heating step or by extraction with solvent. The separator may be made by continuously shaping a body of synthetic resin particles to the desired configuration by rolling pressure, and continuously advancing the body through a heating zone to heat it to a temperature sufficient to sinter the particles.
GB3020/53A 1953-02-21 1952-02-03 Improvements in or relating to a microporous battery separator and method of making same Expired GB725950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US725950XA 1953-02-21 1953-02-21

Publications (1)

Publication Number Publication Date
GB725950A true GB725950A (en) 1955-03-16

Family

ID=22108613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3020/53A Expired GB725950A (en) 1953-02-21 1952-02-03 Improvements in or relating to a microporous battery separator and method of making same

Country Status (1)

Country Link
GB (1) GB725950A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123654A (en) * 1964-03-03 Manufacture of microporous plastic separators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123654A (en) * 1964-03-03 Manufacture of microporous plastic separators

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