US20100196688A1 - Non-woven material with particle filling - Google Patents

Non-woven material with particle filling Download PDF

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Publication number
US20100196688A1
US20100196688A1 US12/676,963 US67696308A US2010196688A1 US 20100196688 A1 US20100196688 A1 US 20100196688A1 US 67696308 A US67696308 A US 67696308A US 2010196688 A1 US2010196688 A1 US 2010196688A1
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United States
Prior art keywords
ply
particles
recited
pores
fibers
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Abandoned
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US12/676,963
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English (en)
Inventor
Peter Kritzer
Christoph Weber
Rudolf Wagner
Gunter Scharfenberger
Michael Roth
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Carl Freudenberg KG
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Carl Freudenberg KG
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Publication date
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Assigned to CARL FREUDENBERG KG reassignment CARL FREUDENBERG KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROTH, MICHAEL, SCHARFENBERGER, GUNTER, WAGNER, RUDOLF, WEBER, CHRISTOPH, KRITZER, PETER
Publication of US20100196688A1 publication Critical patent/US20100196688A1/en
Abandoned legal-status Critical Current

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    • 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
    • H01M50/44—Fibrous material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/02—Diaphragms; Separators
    • 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
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/494—Tensile strength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2008—Fabric composed of a fiber or strand which is of specific structural definition
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/2885—Coated or impregnated acrylic fiber fabric
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/2893—Coated or impregnated polyamide fiber fabric
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/291—Coated or impregnated polyolefin fiber fabric
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/291—Coated or impregnated polyolefin fiber fabric
    • Y10T442/2918—Polypropylene fiber fabric

Definitions

  • This invention relates to a ply having a foundational structure composed of a fibrous nonwoven web fabric, the foundational structure consisting of fibers and having first pores formed by the fibers, the foundational structure being at least partially filled with particles, which particles at least partially fill the first pores and form regions filled with particles.
  • plies of the type mentioned are already known from the prior art. Such plies are used as separators in batteries and capacitors in energy storage duty. Charge storage in batteries and capacitors takes place chemically, physically or in a mixed form, for example by chemisorption.
  • separators or spacers make it possible for ionic charge-carriers of an electrolyte to move between the electrodes.
  • the separators known from the prior art have small, interlinked openings in the micrometer range. These openings are said to be as large as possible in order that electrolyte conductivity in the drenched separator be as high as possible and the battery thus have a high power density. However, if the openings are too large, then metal dendrites can lead to a short circuit between the two electrodes which are actually to be electrically separated from each other.
  • the metal dendrites consist either of lithium or of other metals which can be present in the battery as impurities.
  • particles of electrically conductive electrode materials can migrate through the openings. These processes can give rise to a short circuit between the electrodes and greatly speed the self-discharging of the battery or capacitor.
  • a short circuit can result in the local flow of very high currents, which releases heat. This heat can cause the separator to melt, which in turn can lead to a distinct decrease in the insulating/isolating effect of the separator.
  • a very rapidly self-discharging battery consequently constitutes a high safety risk because of its high energy content and also the combustibility of the electrolyte and of other constituents.
  • a further disadvantage with separators known from the prior art is their lack of stability in the event of rising temperatures.
  • the melting point is around 130° C. when polyethylene is used and around 150° C. when polypropylene is used.
  • Causes of short circuits include shrinkage of the separator due to excessive high temperature in the battery, metal dendrite growth due to reduction of metal ions (lithium, iron, manganese or other metallic impurities), debris from electrode particles, cutting debris or broken covering on electrodes, and direct contact between the two flat electrodes under pressure.
  • metal ions lithium, iron, manganese or other metallic impurities
  • EP 0 892 448 A2 discloses the shutdown mechanism.
  • the shutdown mechanism responds to local heating, for example due to a short circuit, by counteracting the aerial spreading of the short circuit by prohibiting ion migration in the vicinity of the initial short circuit.
  • the heat loss due to the short circuit causes polyethylene to heat up to such an extent that it will melt and blind the pores of the separator.
  • Polypropylene which has a higher melting point, stays mechanically intact.
  • US 2002/0168569 A1 describes the construction of a separator consisting of polyvinyl difluoride which, in the manufacturing operation, is incipiently solubilized with a solvent, mixed with silica particles and applied as a thin film. Removing the solvent leaves a porous membrane.
  • WO 2006/068428 A1 describes the production of separators for lithium ion batteries by using a polyolefin separator which is additionally filled with gellike polymers and inorganic particles.
  • WO 2004/021475 A1 describes the use of ceramic particles which are combined with organosilicon adhesion promoters and inorganic binders from oxides of the elements silicon, aluminum and/or zirconium to form a thin sheet material.
  • the ceramic particles are incorporated into a supporting material, for example a fibrous nonwoven web fabric. This is disclosed by WO 2005/038959 A1.
  • WO 2005/104269 A1 describes the use of comparatively low-melting waxes as an admixture to a ceramic paste.
  • WO 2007/028662 A1 describes the addition of polymer particles having a melting point of above 100° C. to ceramic fillers in order that the mechanical properties of the separator may be improved.
  • the materials described are intended for use as a separator for lithium ion materials. Although these separators do provide a higher thermal stability than membranes, they have so far not been a commercial success. This may be due to their relatively high costs and to the excessive thickness of the material, which is above 25 ⁇ m.
  • WO 2000/024075 A1 describes the production of a membrane which can be used in fuel cells.
  • This membrane consists of glass fiber materials in which fluorinated hydrocarbon polymers are fixed by means of a silicate binder.
  • JP 2005268096 A describes a separator for lithium ion batteries which is produced by melting together thermoplastic particles in a polyethylene/polypropylene fibrous supporting material by heating.
  • This separator has a bubble-shaped porous structure having a pore diameter of 0.1-15 ⁇ m.
  • the prior art does not show an inexpensive separator which combines low thickness with high porosity and high thermal stability and can be safely used, over a wide temperature range, in batteries having high power and energy density.
  • An aspect of the present invention is to develop and refine a ply of the type mentioned at the beginning such that it combine low thickness with high porosity and high thermal stability following inexpensive fabrication.
  • the ply is characterized in that the particles in the filled regions form second pores, the average diameter of the particles being greater than the average pore size of the majority of the second pores.
  • the frequency distribution of the average pore sizes is set according to the present invention such that more than 50% of the second pores have average pore sizes which are below the average diameter of the particles.
  • the inventors recognized that the pore structure of an inexpensive fibrous nonwoven web fabric can be modified through suitable arrangement and selection of particles. Specifically, the porosity of the ply of the present invention was recognized to be enhanceable compared to polyolefin membranes without reducing its stability. The arrangement of a multiplicity of particles whose average diameter is greater than the average pore size of the majority of the second pores in the filled region makes it possible to develop a high porosity and hence an enhanced imbibition of electrolyte by the fibrous nonwoven web fabric.
  • the present invention provides an arrangement for the particles which engenders a pore structure which is not bubblelike but is labyrinthine and includes elongate pores. In such a pore structure, it is virtually impossible for dendritic growths to form that extend all the way from one side of the ply to the other. This is efficacious in preventing short circuits in batteries or capacitors.
  • the ply of the present invention is therefore very useful as a separator for batteries and capacitors having high power and energy density.
  • the ply of the present invention is safe to use over a wide temperature range.
  • the particles could be spherical. This may advantageously produce an overwhelmingly closest packing of spheres in the first pores in the fibrous nonwoven web fabric.
  • the average pore size of the majority of the second pores is essentially determined by geometric conditions in the packings of spheres.
  • the cubically closest packing of spheres is also known as the face-centered cubic packing of spheres.
  • Each sphere in a closest packing of spheres has 12 neighbors, six in its own layer and three each above and below. They form a cuboctahedron in the cubic arrangement and an anticuboctahedron in the hexagonal arrangement.
  • the packing density of a closest packing of spheres is 74%.
  • the desire is to produce as high a porosity as possible. Therefore, not all particles in the first pores of the fibrous nonwoven web fabric will form a closest packing of spheres. Rather, there will also be zones where the particles are packed loosely, which promotes high porosity.
  • the particles could form a sheetlike homogeneous distribution in the foundational structure.
  • This concrete form is a particularly effective way to prevent short circuits.
  • Metal dendrites and detritus find it virtually impossible to migrate through a homogeneously covered sheet.
  • such a sheet prevents direct contact between electrodes on application of pressure. It is specifically conceivable against this background that all the first pores in the fibrous nonwoven web fabric are homogeneously filled with the particles such that the ply predominantly exhibits average pore sizes which are smaller than the average diameters of the particles.
  • the foundational structure could have a coating of the particles.
  • a coating likewise is an advantageous way of effecting the aforementioned prevention of short circuits.
  • the foundational structure will inevitably have a boundary region which is at least partly filled with particles.
  • the particles could be united with the fibrous nonwoven web fabric, or with each other, by a binder.
  • This binder could consist of organic polymers.
  • the use of a binder consisting of organic polymers makes it possible to produce a ply having sufficient mechanical flexibility.
  • Polyvinylpyrrolidone surprisingly shows excellent binder properties.
  • thermoplastic and/or thermosetting binders examples which may be mentioned against this background are polyvinylpyrrolidone, polyacrylic acid, polyacrylates, polymethacrylic acid, polymethacrylates, polystyrene, polyvinyl alcohol, polyvinyl acetate, polyacrylamide and copolymers of the aforementioned, cellulose and its derivatives, polyethers, phenolic resins, melamine resins, polyurethanes, nitrile rubber (NBR), styrene-butadiene rubber (SBR) and also latex.
  • NBR nitrile rubber
  • SBR styrene-butadiene rubber
  • the melting point of the binder and/or of the particles could be below the melting points of the fibers of the fibrous nonwoven web fabric.
  • the particles could have an average diameter in the range from 0.01 to 10 ⁇ m.
  • the selection of the average diameter from this range will be found particularly advantageous to avoid short circuits through formation of dendritic growths or debris.
  • the particles could be fabricated from organic polymers, in particular from polypropylene, polyvinylpyrrolidone, polyvinylidene fluoride, polyester, polytetrafluoroethylene, perfluoroethylene-propylene (FEP), polystyrene, styrene-butadiene copolymers, polyacrylates or nitrile-butadiene polymers and also copolymers of the aforementioned polymers.
  • organic polymers for the particles permits unproblematic melting of the particles to obtain a shutdown effect. It is further possible to fabricate a ply which is easy to cut to size without crumbling. Crumbling of the ply will usually occur when there is a relatively high proportion of inorganic particles in the ply. It is conceivable against this background to use mixtures of different particles or core-shell particles. This can be used to achieve stepwise or stagewise blinding of the pores with increasing temperature.
  • inorganic particles or inorganic-organic hybrid particles do not melt below a temperature of 400° C. It is further possible to choose these particles with basic properties in order that the proton activity present in batteries may be at least partially reduced.
  • the fibers of the fibrous nonwoven web fabric could be fabricated from organic polymers, in particular from polybutyl terephthalate, polyethylene terephthalate, polyacrylonitrile, polyvinylidene fluoride, polyether ether ketones, polyethylene naphthalate, polysulfones, polyimide, polyester, polypropylene, polyoxymethylene, polyamide or polyvinylpyrrolidone. It is also conceivable to use bicomponent fibers which include the aforementioned polymers. The use of these organic polymers makes it possible to produce a ply having only minimal thermal shrinkage. Furthermore, these materials are substantially electrochemically stable to the electrolytes and gases used in batteries and capacitors.
  • the average length of the fibers of the fibrous nonwoven web fabric could exceed their average diameter by at least a factor of two or more, preferably by a multiple.
  • At least 90% of the fibers of the fibrous nonwoven web fabric could have an average diameter of not more than 12 ⁇ m.
  • This concrete development makes it possible to construct a ply having relatively small pore sizes for the first pores. Still finer porosity is obtainable when at least 40% of the fibers of the fibrous nonwoven web fabric have an average diameter of not more than 8 ⁇ m.
  • the ply could be characterized by a thickness of not more than 100 ⁇ m. A ply of this thickness can still be rolled up without problems and permits very safe battery operation.
  • the thickness could preferably be not more than 60 ⁇ m. This thickness permits improved rollability and yet a safe battery operation.
  • the thickness could more preferably be not more than 25 ⁇ m. Plies having such a thickness can be used to build very compact batteries and capacitors.
  • the ply could have a porosity of at least 25%.
  • a ply of this porosity is by virtue of its density of material particularly effective in suppressing the formation of short circuits.
  • the ply could preferably have a porosity of at least 35%.
  • a ply of this porosity can be used to produce a battery of high power density.
  • the ply described herein combines very high porosity with nonetheless very small second pores, so that no dendritic growths extending from one side to the other side of the ply can form. It is conceivable against this background that the second pores form a labyrinthine microstructure in which no dendritic growths from one side to the other side of the ply can form.
  • the ply could have pore sizes of not more than 3 ⁇ m. The choice of this pore size will be found particularly advantageous in avoiding short circuits.
  • the pore sizes could more preferably be not more than 1 ⁇ m. Such a ply is particularly advantageous in avoiding short circuits due to metal dendrite growth, due to debris from electrode particles and due to direct contact between the electrodes on pressure application.
  • the ply could have an ultimate tensile strength force in the longitudinal direction of at least 15 newtons/5 cm. A ply of this strength is particularly easy to roll up on the electrodes of a battery without rupturing.
  • the ply could be mechanically consolidated by calendering.
  • Calendering is effective in reducing surface roughness.
  • the particles used at the surface of the fibrous nonwoven web fabric exhibit flattening after calendering.
  • the ply described herein can be used as a separator in batteries and capacitors in particular, since it is particularly efficacious in preventing short circuits.
  • the ply described herein can also be used as a gas diffusion layer or membrane in fuel cells, since it exhibits good wetting properties and can transport liquids.
  • FIG. 1 shows a scanning electron micrograph of a ply in which the particles are present in first pores in a fibrous nonwoven web fabric and form a porous region filled with particles
  • FIG. 2 shows a scanning electron micrograph of the particles of a filled region configured as a coating
  • FIG. 3 shows a greatly magnified scanning electron micrograph of the particles of a filled region.
  • FIG. 1 shows a ply having a foundational structure composed of a fibrous nonwoven web fabric, the foundational structure consisting of fibers 1 and having first pores 2 formed by the fibers 1 , the foundational structure being at least partially filled with particles 3 , which particles 3 at least partially fill the first pores 2 and form regions 4 filled with particles 3 .
  • FIG. 3 shows a filled region 4 in a magnified view.
  • the particles 3 form second pores 5 in the filled regions 4 , the average diameter of the particles 3 being greater than the average pore size of the majority of the second pores 5 .
  • the particles 3 are spherical and tend to form a closest packing of spheres in regions.
  • FIG. 2 shows a coating of the particles 3 which has been applied to the fibrous nonwoven web fabric.
  • FIGS. 1 to 3 show scanning electron micrographs of a ply comprising a fibrous nonwoven web fabric, the fibers 1 of which are fabricated from polyester.
  • the particles 3 are spherical in configuration and form in regions agglomerates which fill the first pores 2 in the fibrous nonwoven web fabric.
  • the fibers 1 have an average diameter of less than 12 ⁇ m.
  • the ply has a thickness of 25 ⁇ m. It exhibits a shrinkage in the transverse direction of less than 1% at a temperature of 170° C.
  • the average diameter of the particles 3 is 200 nm
  • the particles 3 consist of polyvinylidene fluoride and were secured to the fibers 1 by a polyvinylpyrrolidone binder.
  • the average diameter of the particles 3 is determined from the number of particles 3 in the filled region 4 .
  • the particles 3 preferably exhibit a narrow distribution curve; that is, an average diameter having a low standard deviation.
  • the average pore sizes of most, viz. the majority, of the second pores 5 is less than 200 nm.
  • average pore size of a second pore 5 is meant the diameter of an imaginative sphere 6 which has the same volume as the pore 5 .
  • the imaginative sphere resides between the particles 3 such that it touches the surfaces of the neighboring particles 3 .
  • Imaginative spheres 6 which characterize the dimension of the pores are depicted in FIG. 3 as black-bordered hollow circles.
  • a distribution curve where the x-axis indicates the average pore sizes of the second pores 5 and the y-axis indicates the number or frequency of the average pore sizes would show that more than 50% of the second pores 5 have average pore sizes which are below 200 nm.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cell Separators (AREA)
  • Materials For Medical Uses (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Secondary Cells (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
US12/676,963 2007-09-07 2008-06-16 Non-woven material with particle filling Abandoned US20100196688A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007042554.8 2007-09-07
DE102007042554.8A DE102007042554B4 (de) 2007-09-07 2007-09-07 Vliesstoff mit Partikelfüllung
PCT/EP2008/004824 WO2009033514A1 (de) 2007-09-07 2008-06-16 Vliesstoff mit partikelfüllung

Publications (1)

Publication Number Publication Date
US20100196688A1 true US20100196688A1 (en) 2010-08-05

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US12/676,963 Abandoned US20100196688A1 (en) 2007-09-07 2008-06-16 Non-woven material with particle filling
US12/677,008 Active 2029-11-21 US9172074B2 (en) 2007-09-07 2008-09-08 Nonwoven material with particle filler

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100206804A1 (en) * 2007-09-07 2010-08-19 Carl Freudenberg Kg Nonwoven material with particle filler
US20110081601A1 (en) * 2008-02-20 2011-04-07 Carl Freudenberg Kg Nonwoven Fabric Having Cross-Linking Material
CN102569698A (zh) * 2010-12-08 2012-07-11 索尼公司 层压微孔膜、电池隔膜和非水电解质电池
US20130017431A1 (en) * 2011-01-19 2013-01-17 E. I. Du Pont De Nemours And Company Lithium battery separator with shutdown function
US20130045337A1 (en) * 2011-08-19 2013-02-21 International Business Machines Corporation Homogeneous modification of porous films
US20130130092A1 (en) * 2010-08-11 2013-05-23 Carl Freudenberg Kg Separator with increased puncture resistance
US20130149589A1 (en) * 2011-12-07 2013-06-13 Oliver Gronwald Electrochemical cells comprising a nitrogen-containing polymer
CN103943801A (zh) * 2013-01-18 2014-07-23 罗伯特·博世有限公司 具有改进安全特性的原电池
US8999602B2 (en) 2012-02-27 2015-04-07 Basf Se Separators for electrochemical cells comprising polymer particles
US20150171394A1 (en) * 2013-12-13 2015-06-18 Samsung Sdi Co., Ltd. Spirally-wound electrode assembly for rechargeable lithium battery and rechargeable lithium battery including same
WO2018175134A1 (en) * 2017-03-23 2018-09-27 Boston Materials Llc Fiber-reinforced composites, methods therefor, and articles comprising the same
US10483513B2 (en) 2009-04-17 2019-11-19 Carl Freudenberg Kg Asymmetrical separator
CN111211272A (zh) * 2020-01-10 2020-05-29 武汉中兴创新材料技术有限公司 一种涂层隔膜、涂覆浆料和制备方法
US10797287B2 (en) * 2013-10-31 2020-10-06 Lg Chem, Ltd. Organic/inorganic composite porous membrane, and separator and electrode structure comprising the same
US11479656B2 (en) 2019-07-10 2022-10-25 Boston Materials, Inc. Systems and methods for forming short-fiber films, composites comprising thermosets, and other composites
US11840028B2 (en) 2018-12-10 2023-12-12 Boston Materials, Inc. Systems and methods for carbon fiber alignment and fiber-reinforced composites

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2957610B1 (fr) 2010-03-17 2012-03-23 Freudenberg Politex Sa Produit non-tisse contenant des particules organiques et/ou minerales et son procede de fabrication
CN102587038B (zh) * 2011-01-04 2014-10-08 扬光绿能股份有限公司 无纺布、无纺布的制造方法及气体产生装置
JP2014513395A (ja) 2011-04-04 2014-05-29 ビーエーエスエフ ソシエタス・ヨーロピア イオン交換体を有する電気化学セル
US20120251884A1 (en) * 2011-04-04 2012-10-04 Basf Se Electrochemical cells comprising ion exchangers
JP5951982B2 (ja) * 2011-12-26 2016-07-13 帝人株式会社 非水系二次電池用セパレータおよび非水系二次電池
US20130189550A1 (en) * 2012-01-23 2013-07-25 Nicole JANSSEN Composite, its production and its use in separators for electrochemical cells
DE102013200722A1 (de) 2012-01-30 2013-08-01 Evonik Litarion Gmbh Separator enthaltend eine organisch-anorganische Haftvermittlerkomponente
WO2013126490A1 (en) * 2012-02-21 2013-08-29 Arkema Inc. Aqueous polyvinylidene fluoride composition
KR20140134297A (ko) 2012-02-27 2014-11-21 바스프 에스이 중합체 입자를 포함하는 전기화학 전지용 세퍼레이터
CN108963165B (zh) * 2012-03-09 2021-12-31 帝人株式会社 非水系二次电池用隔膜、其制造方法及非水系二次电池
JP5829570B2 (ja) * 2012-04-24 2015-12-09 三菱製紙株式会社 金属イオン二次電池用セパレータの製造方法
WO2014016347A1 (de) 2012-07-25 2014-01-30 Lanxess Deutschland Gmbh Nanofiltrationsmembran mit einer schicht aus polymer- und oxidpartikeln
JP5941371B2 (ja) * 2012-08-20 2016-06-29 Ｊｍエナジー株式会社 リチウムイオンキャパシタ
KR101699037B1 (ko) 2012-11-12 2017-01-23 주식회사 엘지화학 세퍼레이터의 제조방법, 그에 의해 제조된 세퍼레이터 및 그를 포함하는 전기화학소자
KR101455852B1 (ko) * 2013-01-28 2014-10-27 뉴로엘리싯 주식회사 이차전지용 유무기 다공성분리막의 제조방법 및 이로부터 제조된 유무기 다공성분리막
KR101796283B1 (ko) 2013-11-05 2017-11-10 주식회사 엘지화학 부직포 기재를 포함하는 복합 세퍼레이터 및 그의 제조방법
US10256471B2 (en) 2014-12-22 2019-04-09 Samsung Sdi Co., Ltd. Electrode winding element for non-aqueous electrolyte rechareable battery, non-aqueous electrolyte rechargeable lithium battery including same, method of preparing same
US10014557B2 (en) 2014-12-22 2018-07-03 Samsung Sdi Co., Ltd. Electrode winding element for non-aqueous electrolyte rechareable battery, non-aqueous electrolyte rechargeable lithium battery including same, method of preparing same
JP6399921B2 (ja) 2014-12-22 2018-10-03 三星エスディアイ株式会社Samsung SDI Co., Ltd. 非水電解質二次電池用電極巻回素子、それを用いた非水電解質二次電池、及び非水電解質二次電池用電極巻回素子の製造方法
PL3250537T3 (pl) * 2015-01-28 2022-02-14 Hercules Llc Ceramiczna kompozycja wiążąca do separatora z powłoką ceramiczną do akumulatorów litowo-jonowych, sposoby jej wytwarzania i jej zastosowania
CN107431234A (zh) * 2015-03-24 2017-12-01 日本电气株式会社 高安全性且高能量密度的电池
CN105098125B (zh) * 2015-09-11 2017-07-11 江西先材纳米纤维科技有限公司 氧化铝颗粒填充的复合多曲孔膜材料及其制备方法和应用
CN105244466B (zh) * 2015-09-11 2017-07-11 江西先材纳米纤维科技有限公司 二氧化硅颗粒填充的复合多曲孔膜材料及其制备方法和应用
CN105226219B (zh) * 2015-09-11 2017-07-11 江西先材纳米纤维科技有限公司 氧化锆颗粒填充的复合多曲孔膜材料及其制备方法和应用
CN105206782B (zh) * 2015-09-11 2017-04-05 江西师范大学 PI‑Si3N4‑PTFE三元纳米复合多曲孔膜材料及其制备方法和应用
CN105047847B (zh) * 2015-09-11 2017-04-05 江西师范大学 PI‑AlN‑PTFE三元纳米复合多曲孔膜材料及其制备方法和应用
CN105070869B (zh) * 2015-09-11 2016-08-31 江西师范大学 Pi-bn-ptfe三元纳米复合多曲孔膜材料及其制备方法和应用
KR102546315B1 (ko) * 2015-09-25 2023-06-21 삼성전자주식회사 리튬전지용 전극 복합분리막 어셈블리 및 이를 포함한 리튬전지
KR102496375B1 (ko) * 2015-11-20 2023-02-06 삼성전자주식회사 리튬전지용 전극 복합분리막 어셈블리 및 이를 포함한 리튬전지
JP7115463B2 (ja) * 2017-02-24 2022-08-09 日本ゼオン株式会社 非水系二次電池用バインダー組成物、非水系二次電池機能層用スラリー組成物、非水系二次電池用機能層、および非水系二次電池
EP3385435A1 (en) * 2017-04-03 2018-10-10 Lenzing Aktiengesellschaft Nonwoven cellulose fiber fabric with different sets of pores
WO2019074867A1 (en) 2017-10-09 2019-04-18 Owens Corning Intellectual Capital, Llc AQUEOUS BINDING COMPOSITIONS
MX2020003075A (es) 2017-10-09 2020-07-28 Owens Corning Intellectual Capital Llc Composiciones acuosas de aglutinantes.
JP6411689B1 (ja) * 2018-03-29 2018-10-24 ニッポン高度紙工業株式会社 固体電解コンデンサ又はハイブリッド電解コンデンサ用セパレータ及び固体電解コンデンサ又はハイブリッド電解コンデンサ。
US11367927B2 (en) * 2018-05-14 2022-06-21 International Business Machines Corporation Separator for energy storage device
EP3669973A1 (de) * 2018-12-20 2020-06-24 Evonik Operations GmbH Verbundkörper
US20200340174A1 (en) * 2019-04-29 2020-10-29 Cocona, Inc. Method to incorporate particles in natural fibers and materials
CN112018305A (zh) * 2019-05-30 2020-12-01 财团法人工业技术研究院 复合膜及其制作方法与应用
JP7444561B2 (ja) * 2019-08-08 2024-03-06 株式会社東芝 アルミニウム電解コンデンサ、電気機器、及びアルミニウム電解コンデンサの製造方法
US11813833B2 (en) 2019-12-09 2023-11-14 Owens Corning Intellectual Capital, Llc Fiberglass insulation product
JP7447550B2 (ja) * 2020-03-02 2024-03-12 トヨタ紡織株式会社 セパレータおよびセパレータの製造方法
CN111509252A (zh) * 2020-05-06 2020-08-07 一汽解放汽车有限公司 一种气体扩散层及其制备方法和应用
KR102490379B1 (ko) * 2020-06-25 2023-01-20 제주대학교 산학협력단 압전 섬유를 포함하는 자가 충전 슈퍼 커패시터에서의 충전-저장을 모니터링 하기 위한 검증 방법 및 슈퍼 커패시터의 제조방법
DE102021121361A1 (de) 2021-08-17 2023-02-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Verfahren zur Herstellung einer Feststoff-Batterie mit porösem Stützkörper, und Feststoff-Batterie mit porösem Stützkörper

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022366A (en) * 1955-03-30 1962-02-20 Pittsburgh Plate Glass Co Battery separator and manufacture thereof
US4180611A (en) * 1976-12-04 1979-12-25 Firma Carl Freudenberg Smooth-surfaced nonwoven fabric
US4983450A (en) * 1986-11-18 1991-01-08 Mitsue Toatsu Chemicals, Inc. Gas-permeable, waterproof nonwoven fabric and process for its production
US5328758A (en) * 1991-10-11 1994-07-12 Minnesota Mining And Manufacturing Company Particle-loaded nonwoven fibrous article for separations and purifications
US5747110A (en) * 1992-01-14 1998-05-05 Bowater Packaging Limited Porous webs
US5800947A (en) * 1994-07-29 1998-09-01 Varta Batterie Aktiengellschaft Gastight, sealed alkaline storage battery in the form of a button cell
US20020168569A1 (en) * 2001-03-19 2002-11-14 Atofina Lithium-ion battery elements manufactured from a microcomposite powder based on a filler and on a fluoropolymer
US6746803B1 (en) * 1999-04-09 2004-06-08 Basf Aktiengesellschaft Composite bodies used as separators in electrochemical cells
US20040202835A1 (en) * 2000-04-18 2004-10-14 Lars Gronroos Pigment composite and method for the preparation thereof
US20050032451A1 (en) * 2003-08-06 2005-02-10 Carl Freudenberg Kg Ultrathin, porous and mechanically stable nonwoven fabric and method for manufacturing
US20050158630A1 (en) * 2002-03-20 2005-07-21 Urbain Lambert Separator for secondary electrical accumulators with gas recombination
US20050208383A1 (en) * 2004-03-19 2005-09-22 Hiroki Totsuka Electronic component separator and method for producing the same
US20050221165A1 (en) * 2002-08-24 2005-10-06 Creavis Gesellschaft Fuer Tech. Und Innovation Electrical separator comprising a shut-down mechanism, method for the production thereof and its use in kithium batteries
US20060008700A1 (en) * 2004-07-07 2006-01-12 Yong Hyun H Organic/inorganic composite porous film and electrochemical device prepared thereby
US20060024569A1 (en) * 2002-08-24 2006-02-02 Volker Hennige Separator for use in high-energy batteries and method for the production thereof
US20070122716A1 (en) * 2005-11-28 2007-05-31 Le Chem, Ltd. Organic/inorganic composite porous membrane and electrochemical device using the same
US20070139860A1 (en) * 2003-10-14 2007-06-21 Degussa Ag Capacitor comprising a ceramic separating layer
US20070207693A1 (en) * 2004-03-12 2007-09-06 Takahiro Tsukuda Heat-Resistant Nonwoven Fabric
US20100206804A1 (en) * 2007-09-07 2010-08-19 Carl Freudenberg Kg Nonwoven material with particle filler

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983450A (en) * 1932-09-20 1934-12-04 Viscose Co Delustered rayon and spinning solution therefor
BE697896A (zh) * 1966-05-03 1967-10-16
CA1172310A (en) 1980-06-30 1984-08-07 Stanley J. Strzempko Battery separator material
DE3605981A1 (de) * 1986-02-25 1987-08-27 Goetze Ag Weichstoffflachdichtungsmaterial
GB8608430D0 (en) 1986-04-07 1986-05-14 Raychem Ltd Porous polymer article
SU1757408A1 (ru) * 1990-08-22 1994-08-30 Научно-исследовательский проектно-конструкторский и технологический институт стартерных аккумуляторов Нетканый материал для сепараторов свинцово-кислотных аккумуляторных батарей
TW297171B (zh) * 1994-12-20 1997-02-01 Hoechst Celanese Corp
RU2074457C1 (ru) 1994-12-26 1997-02-27 Акционерное общество "Обисма" Способ изготовления сепаратора для аккумулятора
JP2726633B2 (ja) 1994-12-28 1998-03-11 金井 宏彰 二次電池用セパレータ及びその製造方法、並びにこれを用いたアルカリ二次電池
US5897779A (en) 1997-02-13 1999-04-27 Minnesota Mining And Manufacturing Company Spiral wound extraction cartridge
US5882721A (en) * 1997-05-01 1999-03-16 Imra America Inc Process of manufacturing porous separator for electrochemical power supply
GB9822571D0 (en) * 1998-10-16 1998-12-09 Johnson Matthey Plc Substrate binder
DE19850826A1 (de) 1998-11-04 2000-05-11 Basf Ag Als Separatoren in elektrochemischen Zellen geeignete Verbundkörper
FI19992110A (fi) 1999-09-30 2001-03-30 Jari Ruuttu Menetelmä määrätyn tuotteen, kuten matkapuhelimen kuoren, hankkimiseksi Internetin kautta
EP1271673B1 (en) 2000-03-31 2007-03-07 Yuasa Corporation Battery-use separator, battery-use power generating element and battery
SG129214A1 (en) * 2000-10-12 2007-02-26 Valence Technology Inc Polymeric mesoporous separator elements for laminated lithium-ion rechargeable batteries
US20020180088A1 (en) * 2001-04-03 2002-12-05 Mitsubishi Chemical Corporation Process for producing separator for fuel cell
FI118092B (fi) 2002-03-25 2007-06-29 Timson Oy Kuitupitoinen rata ja menetelmä sen valmistamiseksi
JP4426157B2 (ja) * 2002-07-19 2010-03-03 オムロン株式会社 多孔質形成性光硬化型樹脂組成物および多孔質樹脂硬化物
DE10238943B4 (de) * 2002-08-24 2013-01-03 Evonik Degussa Gmbh Separator-Elektroden-Einheit für Lithium-Ionen-Batterien, Verfahren zu deren Herstellung und Verwendung in Lithium-Batterien sowie eine Batterie, aufweisend die Separator-Elektroden-Einheit
DE10347569A1 (de) * 2003-10-14 2005-06-02 Degussa Ag Keramische, flexible Membran mit verbesserter Haftung der Keramik auf dem Trägervlies
JP4974448B2 (ja) * 2004-04-07 2012-07-11 株式会社巴川製紙所 電子部品用セパレータの製造方法
JP4705335B2 (ja) * 2004-03-19 2011-06-22 株式会社巴川製紙所 電子部品用セパレータ及びその製造方法
DE102004018930A1 (de) * 2004-04-20 2005-11-17 Degussa Ag Verwendung eines keramischen Separators in Lithium-Ionenbatterien, die einen Elektrolyten aufweisen, der ionische Flüssigkeiten enthält
JP2005322517A (ja) * 2004-05-10 2005-11-17 Toshiba Corp 非水電解質二次電池
KR100749301B1 (ko) * 2004-07-07 2007-08-14 주식회사 엘지화학 신규 유/무기 복합 다공성 필름 및 이를 이용한 전기 화학소자
JP4676728B2 (ja) * 2004-08-30 2011-04-27 株式会社巴川製紙所 電子部品用セパレータ及びその製造方法
US7704597B2 (en) * 2004-10-13 2010-04-27 Nitto Denko Corporation Porous film
US20080070107A1 (en) * 2004-12-07 2008-03-20 Shinji Kasamatsu Separator and Non-Aqueous Electrolyte Secondary Battery Using Same
US11050095B2 (en) * 2004-12-08 2021-06-29 Maxell Holdings, Ltd. Separator for electrochemical device, and electrochemical device
KR100775310B1 (ko) * 2004-12-22 2007-11-08 주식회사 엘지화학 유/무기 복합 다공성 분리막 및 이를 이용한 전기 화학소자
DE102005042215A1 (de) * 2005-09-05 2007-03-08 Degussa Ag Separator mit verbesserter Handhabbarkeit
JP4151852B2 (ja) 2005-12-08 2008-09-17 日立マクセル株式会社 電気化学素子用セパレータとその製造方法、並びに電気化学素子とその製造方法
JP4184404B2 (ja) * 2005-12-08 2008-11-19 日立マクセル株式会社 電気化学素子用セパレータおよび電気化学素子
CN101432906B (zh) * 2006-04-28 2011-06-15 株式会社Lg化学 具有凝胶聚合物层的电池用隔膜
JP5657856B2 (ja) 2007-01-29 2015-01-21 日立マクセル株式会社 多孔質膜、電池用セパレータおよびリチウム二次電池

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022366A (en) * 1955-03-30 1962-02-20 Pittsburgh Plate Glass Co Battery separator and manufacture thereof
US4180611A (en) * 1976-12-04 1979-12-25 Firma Carl Freudenberg Smooth-surfaced nonwoven fabric
US4983450A (en) * 1986-11-18 1991-01-08 Mitsue Toatsu Chemicals, Inc. Gas-permeable, waterproof nonwoven fabric and process for its production
US5328758A (en) * 1991-10-11 1994-07-12 Minnesota Mining And Manufacturing Company Particle-loaded nonwoven fibrous article for separations and purifications
US5747110A (en) * 1992-01-14 1998-05-05 Bowater Packaging Limited Porous webs
US5800947A (en) * 1994-07-29 1998-09-01 Varta Batterie Aktiengellschaft Gastight, sealed alkaline storage battery in the form of a button cell
US6746803B1 (en) * 1999-04-09 2004-06-08 Basf Aktiengesellschaft Composite bodies used as separators in electrochemical cells
US20040202835A1 (en) * 2000-04-18 2004-10-14 Lars Gronroos Pigment composite and method for the preparation thereof
US20020168569A1 (en) * 2001-03-19 2002-11-14 Atofina Lithium-ion battery elements manufactured from a microcomposite powder based on a filler and on a fluoropolymer
US20050158630A1 (en) * 2002-03-20 2005-07-21 Urbain Lambert Separator for secondary electrical accumulators with gas recombination
US20050221165A1 (en) * 2002-08-24 2005-10-06 Creavis Gesellschaft Fuer Tech. Und Innovation Electrical separator comprising a shut-down mechanism, method for the production thereof and its use in kithium batteries
US20060024569A1 (en) * 2002-08-24 2006-02-02 Volker Hennige Separator for use in high-energy batteries and method for the production thereof
US20090311418A1 (en) * 2002-08-24 2009-12-17 Evonik Degussa Gmbh Lithium battery separator having a shutdown function
US20050032451A1 (en) * 2003-08-06 2005-02-10 Carl Freudenberg Kg Ultrathin, porous and mechanically stable nonwoven fabric and method for manufacturing
US20070139860A1 (en) * 2003-10-14 2007-06-21 Degussa Ag Capacitor comprising a ceramic separating layer
US20070207693A1 (en) * 2004-03-12 2007-09-06 Takahiro Tsukuda Heat-Resistant Nonwoven Fabric
US20050208383A1 (en) * 2004-03-19 2005-09-22 Hiroki Totsuka Electronic component separator and method for producing the same
US20060008700A1 (en) * 2004-07-07 2006-01-12 Yong Hyun H Organic/inorganic composite porous film and electrochemical device prepared thereby
US20070122716A1 (en) * 2005-11-28 2007-05-31 Le Chem, Ltd. Organic/inorganic composite porous membrane and electrochemical device using the same
US20100206804A1 (en) * 2007-09-07 2010-08-19 Carl Freudenberg Kg Nonwoven material with particle filler

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100206804A1 (en) * 2007-09-07 2010-08-19 Carl Freudenberg Kg Nonwoven material with particle filler
US9172074B2 (en) 2007-09-07 2015-10-27 Carl Freudenberg Kg Nonwoven material with particle filler
US9159979B2 (en) 2008-02-20 2015-10-13 Carl Freudenberg Kg Nonwoven fabric having cross-linking material
US20110081601A1 (en) * 2008-02-20 2011-04-07 Carl Freudenberg Kg Nonwoven Fabric Having Cross-Linking Material
US10483513B2 (en) 2009-04-17 2019-11-19 Carl Freudenberg Kg Asymmetrical separator
US20130130092A1 (en) * 2010-08-11 2013-05-23 Carl Freudenberg Kg Separator with increased puncture resistance
CN102569698A (zh) * 2010-12-08 2012-07-11 索尼公司 层压微孔膜、电池隔膜和非水电解质电池
US20130017431A1 (en) * 2011-01-19 2013-01-17 E. I. Du Pont De Nemours And Company Lithium battery separator with shutdown function
US20130045337A1 (en) * 2011-08-19 2013-02-21 International Business Machines Corporation Homogeneous modification of porous films
US8828489B2 (en) * 2011-08-19 2014-09-09 International Business Machines Corporation Homogeneous modification of porous films
US20130149589A1 (en) * 2011-12-07 2013-06-13 Oliver Gronwald Electrochemical cells comprising a nitrogen-containing polymer
US8999602B2 (en) 2012-02-27 2015-04-07 Basf Se Separators for electrochemical cells comprising polymer particles
CN103943801A (zh) * 2013-01-18 2014-07-23 罗伯特·博世有限公司 具有改进安全特性的原电池
US20140205884A1 (en) * 2013-01-18 2014-07-24 Robert Bosch Gmbh Galvanic element with enhanced safety properties
US9520583B2 (en) * 2013-01-18 2016-12-13 Robert Bosch Gmbh Galvanic element with enhanced safety properties
US10797287B2 (en) * 2013-10-31 2020-10-06 Lg Chem, Ltd. Organic/inorganic composite porous membrane, and separator and electrode structure comprising the same
US9761854B2 (en) * 2013-12-13 2017-09-12 Samsug SDI Co., Ltd. Spirally-wound electrode assembly for rechargeable lithium battery and rechargeable lithium battery including same
US20150171394A1 (en) * 2013-12-13 2015-06-18 Samsung Sdi Co., Ltd. Spirally-wound electrode assembly for rechargeable lithium battery and rechargeable lithium battery including same
WO2018175134A1 (en) * 2017-03-23 2018-09-27 Boston Materials Llc Fiber-reinforced composites, methods therefor, and articles comprising the same
US11840028B2 (en) 2018-12-10 2023-12-12 Boston Materials, Inc. Systems and methods for carbon fiber alignment and fiber-reinforced composites
US11479656B2 (en) 2019-07-10 2022-10-25 Boston Materials, Inc. Systems and methods for forming short-fiber films, composites comprising thermosets, and other composites
US11767415B2 (en) 2019-07-10 2023-09-26 Boston Materials, Inc. Systems and methods for forming short-fiber films, composites comprising thermosets, and other composites
US11820880B2 (en) 2019-07-10 2023-11-21 Boston Materials, Inc. Compositions and methods for carbon fiber-metal and other composites
CN111211272A (zh) * 2020-01-10 2020-05-29 武汉中兴创新材料技术有限公司 一种涂层隔膜、涂覆浆料和制备方法

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US20100206804A1 (en) 2010-08-19
RU2427944C1 (ru) 2011-08-27
ATE518265T1 (de) 2011-08-15
BRPI0816369B1 (pt) 2019-02-05
EP2034540B1 (de) 2011-07-27
EP2186149A1 (de) 2010-05-19
JP2010538172A (ja) 2010-12-09
WO2009033514A1 (de) 2009-03-19
CN101796667B (zh) 2018-01-02
CN101960646A (zh) 2011-01-26
DE102007042554B4 (de) 2017-05-11
ATE533198T1 (de) 2011-11-15
RU2449425C2 (ru) 2012-04-27
EP2034540A1 (de) 2009-03-11
EP2235766B1 (de) 2011-11-09
RU2010113350A (ru) 2011-10-20
DE102007042554A1 (de) 2009-03-12
ATE521097T1 (de) 2011-09-15
KR20100049676A (ko) 2010-05-12
BRPI0816369A2 (pt) 2015-02-24
JP5470643B2 (ja) 2014-04-16
ES2368667T3 (es) 2011-11-21
ES2368014T3 (es) 2011-11-11
CN101796667A (zh) 2010-08-04
CN108023049B (zh) 2021-10-29
KR101123984B1 (ko) 2012-03-23
CN108023049A (zh) 2018-05-11
BRPI0816699B1 (pt) 2019-04-09
EP2235766A1 (de) 2010-10-06
US9172074B2 (en) 2015-10-27
KR20100049670A (ko) 2010-05-12
JP5553021B2 (ja) 2014-07-16
ES2374031T3 (es) 2012-02-13
JP2010538173A (ja) 2010-12-09
WO2009033627A1 (de) 2009-03-19
KR101138581B1 (ko) 2012-05-10
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CN101960646B (zh) 2014-10-15
HK1254291A1 (zh) 2019-07-19

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