WO2015083546A1 - 電気化学素子用複合膜 - Google Patents
電気化学素子用複合膜 Download PDFInfo
- Publication number
- WO2015083546A1 WO2015083546A1 PCT/JP2014/080628 JP2014080628W WO2015083546A1 WO 2015083546 A1 WO2015083546 A1 WO 2015083546A1 JP 2014080628 W JP2014080628 W JP 2014080628W WO 2015083546 A1 WO2015083546 A1 WO 2015083546A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluororesin
- nonwoven fabric
- composite film
- ion exchange
- electrochemical element
- Prior art date
Links
Images
Classifications
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1041—Polymer electrolyte composites, mixtures or blends
- H01M8/1044—Mixtures of polymers, of which at least one is ionically conductive
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2218—Synthetic macromolecular compounds
- C08J5/2225—Synthetic macromolecular compounds containing fluorine
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- 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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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
- H01M50/426—Fluorocarbon polymers
-
- 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
- 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
-
- 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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0289—Means for holding the electrolyte
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/102—Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer
- H01M8/1027—Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES]
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1058—Polymeric electrolyte materials characterised by a porous support having no ion-conducting properties
- H01M8/106—Polymeric electrolyte materials characterised by a porous support having no ion-conducting properties characterised by the chemical composition of the porous support
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1065—Polymeric electrolyte materials characterised by the form, e.g. perforated or wave-shaped
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1069—Polymeric electrolyte materials characterised by the manufacturing processes
- H01M8/1081—Polymeric electrolyte materials characterised by the manufacturing processes starting from solutions, dispersions or slurries exclusively of polymers
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1069—Polymeric electrolyte materials characterised by the manufacturing processes
- H01M8/1086—After-treatment of the membrane other than by polymerisation
- H01M8/109—After-treatment of the membrane other than by polymerisation thermal other than drying, e.g. sintering
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a composite membrane for electrochemical devices having excellent membrane stability and high ion exchange capacity.
- Fuel cells are attracting attention as a clean energy supply source.
- the polymer electrolyte fuel cell can be reduced in size and weight, and is expected to be usable in a wide range of fields such as home use, portable use, and automobile use.
- the polymer electrolyte fuel cell is configured by stacking a single cell and a separator, and the cell is configured such that an electrode of a fuel electrode and an air electrode sandwiches a polymer electrolyte membrane.
- the polymer solid electrolyte membrane used in the polymer electrolyte fuel cell needs to have a low membrane resistance. For this reason, it is desirable that the film thickness be as thin as possible, but if the film thickness is too thin, There have been problems such as pinholes during film formation, film tearing during electrode molding, and short-circuiting between the electrodes.
- the polymer solid electrolyte membrane is often used in a wet state, and the electrolyte membrane swells.
- the polymer solid electrolyte membrane shrinks by drying. In this way, the electrolyte membrane is easily deformed by repeated swelling or shrinkage. There has been a problem with reliability such as pressure resistance and cross leak during differential pressure operation due to such deformation.
- a separator diaphragm
- a separator diaphragm
- it is a problem to reduce the size, extend the life, and improve the performance of the secondary battery there is a need for a film member that has all of the thin film thickness, sufficient strength, and low film resistance. It had been.
- the solid polymer electrolyte membrane disclosed in Patent Document 1 uses a stretched membrane (stretched polytetrafluoroethylene) as a reinforcing membrane to achieve stability of the solid polymer electrolyte membrane.
- the battery separator disclosed in Patent Document 2 is ion-conductive by fixing low molecular weight polyethylene to the fiber surface of a polytetrafluoroethylene porous film (stretched polytetrafluoroethylene) having small fibers and bundles. We are trying to provide a separator with excellent electrical properties and low electrical resistance.
- an inner layer is formed of polymer fibers having a diameter of 20 to 400 denier, and an outer layer made of a polymer having an ion exchange group is formed on the outer peripheral portion of the inner layer. Therefore, it has high mechanical strength, high dimensional stability, and low electrical resistance.
- the solid polymer electrolyte membrane and the separator in which the stretched membrane is applied to the reinforcing membranes disclosed in Patent Documents 1 and 2 the flow direction peculiar to the stretched membrane (hereinafter referred to as TD direction) and the direction perpendicular to the flow (hereinafter referred to as The shrinkage inside the film due to anisotropy with the MD direction) and the thermal shrinkage due to the thermal history during the stretching process are likely to cause film breakage inside the film.
- the stretched film is composed of nodes (binding portions) and fibrils (fibrous portions), the uniformity of the porous structure is low and it is difficult to increase the ion exchange capacity.
- the polymer electrolyte membrane disclosed in Patent Document 3 uses thick polymer fibers having a diameter of 20 to 400 denier, the membrane resistance is increased by inhibiting proton conductivity in the membrane. There is a problem that the thickness of the electrolyte membrane as a composite membrane is increased.
- the present invention is to provide a composite film for an electrochemical element.
- the composite membrane for an electrochemical element of the present invention which has been made to solve the above problems, is characterized by having a fluororesin nonwoven fabric made of fluororesin fibers having an average fiber diameter of 300 to 5000 nm, and an ion exchange material. With this configuration, the composite membrane for electrochemical devices has excellent membrane stability and high ion exchange capacity.
- the fluororesin fiber is a polytetrafluoroethylene fiber. With this configuration, it has high heat resistance and high chemical durability to various electrolytic solutions.
- the composite film for an electrochemical element of the present invention is characterized in that the polytetrafluoroethylene fiber is produced from a solution containing polytetrafluoroethylene by an electrospinning method.
- This configuration has the following characteristics. Higher heat resistance and stability. Moreover, since it has a higher porosity and high uniformity of fiber diameter and pore diameter, it can be filled with many ion exchange materials and has a high ion exchange capacity. Furthermore, even if the film thickness is reduced, it has sufficient strength and can reduce the film resistance. Further, no anisotropy occurs in the MD direction and the TD direction.
- the ion exchange material is a fluorine-containing ion exchange resin.
- the composite membrane for electrochemical elements of the present invention is used as an electrolyte membrane for fuel cells.
- this configuration it is possible to provide an electrolyte membrane for a fuel cell that has low membrane resistance, excellent membrane stability, and is unlikely to be deformed or broken.
- the composite film for electrochemical elements of the present invention is used as a separator for a secondary battery.
- a secondary battery separator that has low film resistance, excellent film stability, and is unlikely to be deformed or broken.
- the method for producing a composite film for an electrochemical device includes producing a fluororesin fiber having an average fiber diameter of 300 to 5000 nm from a fluororesin by an electrospinning method, and comprising the fluororesin nonwoven fabric precursor comprising the fluororesin fiber.
- the electrospinning process for forming the fluorine resin, the fluororesin nonwoven fabric precursor is heated and fired to form the fluororesin nonwoven fabric, and the fluororesin nonwoven fabric formed by the firing process is combined with the ion exchange material. And a compounding step.
- the method for producing a composite membrane for an electrochemical device of the present invention uses a spinning solution creating step of creating a spinning solution by dispersing and dissolving a polymer to be fiberized and polytetrafluoroethylene in a solvent, and the spinning solution.
- the electrospinning method generates and accumulates fluororesin fibers to form a fluororesin nonwoven precursor, and the fluoropolymer nonwoven precursor is heated and fired to remove the polymer and solvent.
- the secondary battery of the present invention is characterized by having a composite film for an electrochemical element. With this configuration, it is possible to improve the performance, extend the life, reduce the size, and reduce the weight of the secondary battery.
- the fuel cell of the present invention is characterized by having a composite membrane for an electrochemical element. With this configuration, it is possible to improve the performance, extend the life, reduce the size, and reduce the weight of the fuel cell.
- the composite membrane for electrochemical devices of the present invention has excellent membrane stability and high ion exchange capacity.
- FIG. 1 is a schematic cross-sectional view of the composite film for an electrochemical element of the present embodiment.
- the electrochemical device composite film 10 of this embodiment includes a fluororesin nonwoven fabric 11 made of fluororesin fibers having an average fiber diameter of 300 to 5000 nm, and an ion exchange material 12.
- the average fiber diameter of the fluororesin nonwoven fabric 11 is preferably 400 to 2000 nm, although it depends on the type of fluororesin, 600 It is more preferable that the thickness is ⁇ 1200 nm.
- the ion exchange (permeation) function of the composite membrane for an electrochemical element may be hindered by fibers having a large fiber diameter.
- the average fiber diameter is determined by randomly specifying a region to be observed with a scanning electron microscope (SEM) on the fluororesin nonwoven fabric 11 to be measured, and observing this region with an SEM (magnification: 10,000 times).
- SEM scanning electron microscope
- 10 fluororesin fibers are selected, and the fiber diameters of the fluororesin fibers are measured using a measuring instrument, respectively.
- the cross-sectional shape of the fluororesin fiber is not particularly limited, and fibers having a cross-sectional shape such as a circular shape, an elliptical shape, a flat shape, or a polygonal shape can be used. From the viewpoint of uniformity, the shape is preferably circular. Further, as shown in the schematic cross-sectional view shown in FIG. 1, the composite membrane 10 for an electrochemical device has a nanofiber reinforced solid high-density structure in which at least a part of voids formed in the fluororesin nonwoven fabric 11 is filled with the ion exchange material 12. It is a molecular electrolyte membrane.
- the fluororesin constituting the fluororesin fiber includes polyvinylidene fluoride, polyhexafluoropropylene, polyperfluoroalkyl vinyl ether, polychlorotrifluoroethylene, polytetrafluoroethylene, and the like. Moreover, you may use the polymer blend which consists of these copolymers and several fluororesin. Among these fluororesins, a fluororesin composed of polytetrafluoroethylene is preferable in terms of heat resistance, long-term stability, and chemical durability.
- the fluororesin nonwoven fabric 11 has a plurality of pores and serves as a reinforcing material in the composite film 10 for electrochemical elements.
- the fluororesin nonwoven fabric 11 can be formed by a known fiber manufacturing method.
- the fluororesin nonwoven fabric 11 is formed by electrospinning, so that the fluororesin fiber has a circular cross-sectional shape and a small average fiber diameter. Can be produced and deposited (without applying a large load such as water pressure) and the fluororesin nonwoven fabric 11 having a high porosity can be produced.
- the electrospinning method is, for example, the spinning method disclosed in JP-A-51-60773 and JP-A-2012-515850 when the fluororesin is polytetrafluoroethylene.
- a spinning solution is prepared by dispersing and dissolving a polymer to be fiberized and polytetrafluoroethylene in a solvent.
- the spinning solution is supplied to a charged needle container.
- the target is placed at a position separated from the needle-like container by a predetermined distance, and the target is grounded.
- the spinning solution is electrostatically attracted from the needle-like container to the target, so that the fluororesin fibers are generated, the fluororesin fibers are accumulated, and the formed fluororesin nonwoven precursor is heated and fired.
- the fluororesin nonwoven fabric 11 which consists only of polytetrafluoroethylene is formed by removing the polymer and solvent which fiberize by this.
- the film thickness of the fluororesin nonwoven fabric 11 is preferably 5 ⁇ m to 500 ⁇ m, more preferably 10 ⁇ m to 200 ⁇ m, although it depends on the fiber diameter of the fluororesin fiber.
- the film thickness of the fluororesin nonwoven fabric 11 is within this range, it is possible to cope with downsizing of the electrochemical element and a structure in which a large number of fibers are uniformly distributed and deposited. And it becomes possible to set it as a composite film with high uniformity of durability.
- the porosity of the fluororesin nonwoven fabric 11 is preferably 40 to 98%, more preferably 65 to 95%, from the viewpoint of the membrane resistance and strength of the resulting composite membrane for electrochemical devices.
- the ion exchange material 12 may be any material having an ion exchange group, and a known organic material, inorganic material, or organic-inorganic composite material may be used, or a plurality of ion exchange materials may be used.
- a known organic material, inorganic material, or organic-inorganic composite material may be used, or a plurality of ion exchange materials may be used.
- an ion exchange material made of an organic material is preferable from the viewpoint of the flexibility of the composite membrane for electrochemical elements, and perfluorocarbon sulfone is also preferable from the viewpoint of durability of the composite membrane for electrochemical elements.
- An acid resin is more preferable. Examples of commercially available perfluorocarbon sulfonic acid resins include Nafion (registered trademark, manufactured by E. I. du Pont de Nemours and Company, hereinafter omitted) having a structure of the following formula, Aquivion (registered trademark, Solvay Solexis) Can be used.
- the ion exchange material 12 may be combined with the fluororesin nonwoven fabric 11 alone, or may be dispersed or dissolved in a solvent and combined with the fluororesin nonwoven fabric 11.
- known methods can be used.
- the ion exchange material 12 is impregnated in the pores of the fluororesin nonwoven fabric 11 by applying and adhering the exchange material 12 alone or a dispersed or dissolved solution.
- heat drying treatment may be performed as necessary, or ionizing radiation irradiation treatment such as an electron beam or chemical treatment using a crosslinking agent may be performed.
- the fluororesin nonwoven fabric 11 is formed, for example, by the above-described electrospinning method. That is, a spinning solution is prepared by dispersing and dissolving a fluororesin and additives such as a fiberizing polymer and a surfactant in a solvent. Next, the spinning solution is supplied to a charged needle-like container. Here, the target is installed at a position spaced a predetermined distance from the needle-shaped container, and the target is grounded. And the fluororesin fiber which has a desired average fiber diameter is produced
- the fluororesin nonwoven fabric 11 formed by accumulating the fluororesin fibers thus produced is heated and fired at a temperature of 30 to 400 ° C. as necessary to form the fluororesin nonwoven fabric 11.
- the fluororesin nonwoven fabric 11 can be manufactured so as not to have anisotropy such as the MD direction or the TD direction found in the stretched film.
- the fluororesin nonwoven fabric 11 and the ion exchange material 12 are combined.
- an ion exchange material solution is prepared by dissolving Nafion or Aquivion, which is the ion exchange material 12, in a solvent.
- the fluororesin non-woven fabric 11 is immersed in the produced ion exchange material solution and left to stand for 1 minute to 24 hours.
- the fluororesin nonwoven fabric 11 since the fluororesin nonwoven fabric 11 has liquid repellency, the ion exchange material 12 may be difficult to be filled into the fluororesin nonwoven fabric 11 when immersed in an ion exchange material solution.
- the fluororesin nonwoven fabric 11 is once impregnated with an organic solvent such as 1-propanol, methyl alcohol, acetone, diethyl ether or the like before the compounding step with the ion exchange material solution, whereby the pores of the fluororesin are obtained. It is preferable to treat so that the ion exchange material solution penetrates uniformly.
- the fluororesin nonwoven fabric 11 that has been allowed to stand for a certain period of time is taken out from the ion exchange material solution, and the solvent is removed by evaporation in an environment of 30 to 250 ° C. for 1 minute to 24 hours. Manufacturing.
- This drying process may be performed at a single temperature or may be dried stepwise under different temperature environments. Moreover, you may make it dry in pressure reduction or a pressurization environment as needed.
- Example 1 of the present embodiment is a non-woven fabric made of polytetrafluoroethylene fiber (hereinafter referred to as PTFE fiber) having an average fiber diameter of 900 nm, which is produced by electrospinning and heat-fired as a fluororesin non-woven fabric.
- PTFE fiber polytetrafluoroethylene fiber
- a 20 mass percent Nafion solution was used as the dissolution solution for the ion exchange material 12.
- the nonwoven fabric composed of the PTFE fibers had a porosity of 85%, an average pore diameter of 1.8 ⁇ m, and a thickness of 60 ⁇ m.
- the porosity was calculated by the following equation.
- Porosity (%) [1 ⁇ ⁇ (weight of fluororesin nonwoven fabric) / (volume of fluororesin nonwoven fabric ⁇ true density of fluororesin) ⁇ ] ⁇ 100
- the volume of the fluororesin nonwoven fabric in the above formula is a value calculated from the measurement results of the lateral width, longitudinal width, and thickness of the fluororesin nonwoven fabric.
- the true density of the fluororesin (PTEE) was 2.1 g / cm 3 .
- the obtained fluororesin nonwoven fabric is dipped in 1-propanol, taken out, immersed in a Nafion solution, and allowed to stand for 3 hours. The holes were filled with Nafion. Thereafter, the fluororesin non-woven fabric is taken out from the Nafion solution, left in a drying furnace kept at 60 ° C. for 30 minutes, and then left in a drying furnace kept at 120 ° C. for 10 minutes to remove the solvent, and then carried out.
- a composite film for an electrochemical device of Example 1 was produced.
- the ion exchange capacity measurement (IEC) was calculated using a neutralization titration method.
- the dried composite membrane for an electrochemical device was impregnated with an aqueous solution of sodium chloride (NaCl) and allowed to stand for 48 hours.
- the amount of sulfone groups in the composite membrane for electrochemical devices was calculated by performing neutralization titration with a 0.01 M sodium hydroxide (NaOH) aqueous solution.
- the sulfone group concentration and the ion exchange amount (IEC) were calculated from the amount of the sulfone group and the weight of the dry composite membrane for electrochemical devices.
- the dimensional change was calculated by the following method. After immersing the composite membrane for electrochemical devices in water kept at 90 ° C. for 3 hours, the water adhering to the surface of the taken composite membrane for electrochemical devices was wiped off, and the dimensions immediately after swelling were measured. Moreover, the composite film for electrochemical devices was dried at 110 ° C. for 3 hours to remove moisture in the composite film, and the dimensions after drying were measured. Each dimensional change was calculated with each dimension before being immersed in water as 100%.
- the shape change of the composite film for electrochemical elements immediately after swelling and after drying was visually evaluated based on the following criteria. ⁇ : Wrinkles and rounds were hardly seen. ⁇ : Some wrinkles and rounds were seen, but the flat shape was maintained as a whole. ⁇ : Many wrinkles and rounds were generated, and some flat shapes were kept. ⁇ : It was not possible to maintain the overall planar shape due to wrinkles and rounding.
- the composite membrane for an electrochemical element of Example 2 is made of PTFE fiber having an average fiber diameter of 900 nm, which is generated by electrospinning and heat-fired, and has a porosity of 85% and an average pore diameter of 1.8 ⁇ m.
- a composite film for an electrochemical device was produced by the same procedure as in Example 1 except that a fluororesin nonwoven fabric having a thickness of 30 ⁇ m was used.
- the heat shrinkage of the used fluororesin nonwoven fabric of Example 2 and the ion exchange capacity and dimensional change of the produced composite membrane for an electrochemical element of Example 2 were measured by the same method as in Example 1. The measurement results are shown in Table 1.
- e-PTFE stretched polytetrafluoroethylene
- porosity 85%, average pore diameter: 1.0 ⁇ m, thickness: 30 ⁇ m
- a composite film for an electrochemical device was produced by the same procedure as in Example 1.
- the heat shrinkage of the e-PTFE of Comparative Example 1 used, and the ion exchange capacity and dimensional change of the produced composite membrane for an electrochemical device of Comparative Example 1 were measured by the same method as in Example 1. The measurement results are shown in Table 1. Since e-PTFE is composed of non-fibrous forms of nodes (binding portions) and fibrils (fibrous portions), an appropriate average fiber diameter can be calculated by the fiber diameter measurement method by SEM observation. Not shown in Table 1.
- Comparative Example 2 was carried out in the same procedure as in Example 1 except that e-PTFE (porosity: 66%, average pore diameter: 0.45 ⁇ m, thickness: 30 ⁇ m) was used instead of the fluororesin nonwoven fabric. A composite film for chemical elements was produced. The heat shrinkage of the e-PTFE of Comparative Example 2 used, and the ion exchange capacity and dimensional change of the produced composite membrane for an electrochemical device of Comparative Example 2 were measured by the same method as in Example 1. The measurement results are shown in Table 1.
- Comparative Example 3 was carried out in the same procedure as in Example 1 except that e-PTFE (porosity: 56%, average pore diameter: 0.10 ⁇ m, thickness: 30 ⁇ m) was used instead of the fluororesin nonwoven fabric. A composite film for chemical elements was produced. The heat shrinkage of the e-PTFE of Comparative Example 3 used and the ion exchange capacity and dimensional change of the produced composite membrane for an electrochemical device of Comparative Example 3 were measured by the same method as in Example 1. The measurement results are shown in Table 1.
- Comparative Example 4 a commercially available perfluorocarbon sulfonic acid membrane (Nafion NRE212, manufactured by E. I. du Pont de Nemours and Company) was used as a composite membrane for an electrochemical device.
- the ion exchange capacity and dimensional change of the composite membrane for electrochemical elements of Comparative Example 4 were measured by the same method as in Example 1. The measurement results are shown in Table 1.
- the fluororesin nonwoven fabric 11 has a high porosity
- the ion exchange material 12 is easily impregnated into the interior of the fluororesin nonwoven fabric 11, and many ion exchange materials. 12 can be charged and has a high ion exchange capacity.
- the composite membrane for electrochemical elements 10 of the present invention uses a nonwoven fabric made of fibers having a fiber diameter of 300 to 5000 nm, the membrane resistance of the composite membrane for electrochemical elements can be lowered and the film thickness can be reduced. it can.
- the fluororesin nonwoven fabric 11 of the present invention is formed by the electrospinning method, thermal shrinkage is small, dimensional change before and after swelling, generation of wrinkles and rounding can be suppressed, and high stability is achieved. Further, the anisotropy due to the film direction is small, and the film breakage of the composite film for electrochemical elements 10 is unlikely to occur. Furthermore, it is considered that a large amount of ion exchange material 12 can be filled because of the use of a fluororesin non-woven fabric with higher uniformity of fiber diameter and pore diameter than e-PTFE, and it has a high ion exchange capacity. .
- the composite membrane 10 for electrochemical elements of the present embodiment can be used not only as an electrolyte membrane for fuel cells but also as a separator for secondary batteries and an ion exchange membrane for electrochemical devices.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Dispersion Chemistry (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Fuel Cell (AREA)
- Conductive Materials (AREA)
- Cell Separators (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
この構成により、電気化学素子用複合膜は、膜の安定性に優れ、且つ高いイオン交換容量を有する。
この構成により、高い耐熱性や、各種電解液等への高い化学的耐久性を有する。
この構成により、以下の特徴を有する。より高い耐熱性及び安定性を有する。また、より高い空隙率を有し、繊維径及び細孔径の均一性が高いため、多くのイオン交換材料を充填することができ、高いイオン交換容量を有する。さらに、膜厚を薄くしても、十分な強度を有すると共に、膜抵抗を低くすることができる。また、MD方向とTD方向による異方性が生じない。
この構成により、耐久性の高い複合膜とすることができ、またプロトン透過チャンネルが形成されやすい。
この構成により、膜抵抗が低く、膜の安定性に優れ、膜の変形・破壊が生じにくい燃料電池用電解質膜を提供することができる。
この構成により、膜抵抗が低く、膜の安定性に優れ、膜の変形・破壊が生じにくい二次電池用セパレータを提供することができる。
この構成により、膜抵抗が低く、異方性を有しない電気化学素子用複合膜を製造することができる。
この構成により、耐熱性、長期安定性、化学的耐久性に優れ、且つ膜抵抗が低いと共に、強度、耐久性、及び膜抵抗の均一性が高い電気化学素子用複合膜を製造することができる。
この構成により、二次電池の高性能化・長寿命化・小型化・軽量化を図ることができる。
この構成により、燃料電池の高性能化・長寿命化・小型化・軽量化を図ることができる。
本実施形態の実施例1は、フッ素樹脂不織布として、電界紡糸法により生成され、加熱焼成処理された、平均繊維径が900nmのポリテトラフルオロエチレン繊維(以下、PTFE繊維と記す)からなる不織布を用い、イオン交換材料12の溶解溶液として、20質量パーセントのNafion溶液を用いた。当該PTFE繊維からなる不織布は、気孔率が85%、平均細孔径が1.8μm、厚さが60μmであった。ここで、気孔率は、次式にて算出した。
気孔率(%)=[1-{(フッ素樹脂不織布の重量)/(フッ素樹脂不織布の体積×フッ素樹脂の真密度)}]×100
尚、上式中のフッ素樹脂不織布の体積はフッ素樹脂不織布の横幅、縦幅、厚みの測定結果より算出される値とする。また、フッ素樹脂(PTEE)の真密度は2.1g/cm3とした。
◎:シワや丸まりがほとんど見られなかった
○:シワや丸まりが一部見られたが、全体として平面形状を保っていた
△:シワや丸まりが多数発生し、平面形状を一部保てていなかった
×:シワや丸まりにより、全体的に平面形状を保てていなかった
実施例2の電気化学素子用複合膜は、電界紡糸法により生成され、加熱焼成処理された、平均繊維径が900nmであるPTFE繊維からなり、気孔率が85%、平均細孔径が1.8μm、厚さが30μmであるフッ素樹脂不織布を用いた以外は実施例1と同様の手順により、電気化学素子用複合膜を作製した。用いた実施例2のフッ素樹脂不織布の熱収縮、及び作製した実施例2の電気化学素子用複合膜のイオン交換容量、及び寸法変化は、実施例1と同様の方法により測定した。測定結果を表1に示す。
比較例1は、延伸ポリテトラフルオロエチレン(以下、e-PTFEと記す。気孔率:85%、平均細孔径:1.0μm、厚さ:30μm)をフッ素樹脂不織布の代わりに用いた以外は、実施例1と同様の手順により、電気化学素子用複合膜を作製した。用いた比較例1のe-PTFEの熱収縮、及び作製した比較例1の電気化学素子用複合膜のイオン交換容量、及び寸法変化は、実施例1と同様の方法により測定した。測定結果を表1に示す。尚、e-PTFEは、非繊維状形態のノード(結束部)とフィブリル(繊維状部)とから構成されているため、SEM観察による繊維径の測定方法では適切な平均繊維径を算出することができず、表1に示していない。
比較例2は、e-PTFE(気孔率:66%、平均細孔径:0.45μm、厚さ:30μm)をフッ素樹脂不織布の代わりに用いた以外は、実施例1と同様の手順により、電気化学素子用複合膜を作製した。用いた比較例2のe-PTFEの熱収縮、及び作製した比較例2の電気化学素子用複合膜のイオン交換容量、及び寸法変化は、実施例1と同様の方法により測定した。測定結果を表1に示す。
比較例3は、e-PTFE(気孔率:56%、平均細孔径:0.10μm、厚さ:30μm)をフッ素樹脂不織布の代わりに用いた以外は、実施例1と同様の手順により、電気化学素子用複合膜を作製した。用いた比較例3のe-PTFEの熱収縮、及び作製した比較例3の電気化学素子用複合膜のイオン交換容量、及び寸法変化は、実施例1と同様の方法により測定した。測定結果を表1に示す。
比較例4は、電気化学素子用複合膜として、市販のパーフルオロカーボンスルホン酸膜(Nafion NRE212、E. I. du Pont de Nemours and Company社製)を用いた。比較例4の電気化学素子用複合膜のイオン交換容量、寸法変化は、実施例1と同様の方法により測定した。測定結果を表1に示す。
本明細書開示の発明は、各発明や実施形態の構成の他に、適用可能な範囲で、これらの部分的な構成を本明細書開示の他の構成に変更して特定したもの、或いはこれらの構成に本明細書開示の他の構成を付加して特定したもの、或いはこれらの部分的な構成を部分的な作用効果が得られる限度で削除して特定した上位概念化したものを含み、下記の変形例等も包含する。
11…フッ素樹脂不織布
12…イオン交換材料
Claims (10)
- 平均繊維径が300~5000nmのフッ素樹脂繊維からなるフッ素樹脂不織布と、
イオン交換材料と、を有することを特徴とする電気化学素子用複合膜。 - 前記フッ素樹脂繊維が、ポリテトラフルオロエチレン繊維であることを特徴とする請求項1に記載の電気化学素子用複合膜。
- 前記ポリテトラフルオロエチレン繊維が、ポリテトラフルオロエチレンを含む溶液から電界紡糸法により生成されることを特徴とする請求項2に記載の電気化学素子用複合膜。
- 前記イオン交換材料が含フッ素イオン交換樹脂であることを特徴とする請求項1~3の何れかに記載の電気化学素子用複合膜。
- 前記電気化学素子用複合膜が、燃料電池用電解質膜として用いられることを特徴とする請求項1~4の何れかに記載の電気化学素子用複合膜。
- 前記電気化学素子用複合膜が、二次電池用セパレータとして用いられることを特徴とする請求項1~4の何れかに記載の電気化学素子用複合膜。
- フッ素樹脂から、電界紡糸法により平均繊維径が300~5000nmのフッ素樹脂繊維を生成し、前記フッ素樹脂繊維からなるフッ素樹脂不織布前駆体を形成する電界紡糸工程と、
前記電界紡糸工程により、形成した前記フッ素樹脂不織布前駆体を加熱焼成し、フッ素樹脂不織布を形成する焼成工程と、
前記焼成工程により形成した前記フッ素樹脂不織布と、イオン交換材料とを複合化する複合化工程と、
を有することを特徴とする電気化学素子用複合膜の製造方法。 - 繊維化するポリマー及びポリテトラフルオロエチレンを溶媒に分散・溶解させて、紡糸液を作成する紡糸液作成工程と、
前記紡糸液を用いて電界紡糸法によりフッ素樹脂繊維を生成し、集積することによりフッ素樹脂不織布前駆体を形成する電界紡糸工程と、
前記フッ素樹脂不織布前駆体を加熱焼成することにより前記繊維化するポリマー及び溶媒を除去し、ポリテトラフルオロエチレンのみからなるフッ素不織布を形成する焼成工程と、
前記フッ素樹脂不織布とイオン交換材料とを複合化する複合化工程と、
を有することを特徴とする電気化学素子用複合膜の製造方法。 - 請求項1~4及び請求項6の何れかに記載の電気化学素子用複合膜を有することを特徴とする二次電池。
- 請求項1~5の何れかに記載の電気化学素子用複合膜を有することを特徴とする燃料電池。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015551455A JP6471097B2 (ja) | 2013-12-03 | 2014-11-19 | 電気化学素子用複合膜 |
KR1020167015401A KR20160093016A (ko) | 2013-12-03 | 2014-11-19 | 전기화학소자용 복합 막 |
EP14867342.9A EP3079191B1 (en) | 2013-12-03 | 2014-11-19 | Composite film for electrochemical element |
CN201480065690.7A CN105765762A (zh) | 2013-12-03 | 2014-11-19 | 电化学元件用复合膜 |
US15/100,772 US20160308231A1 (en) | 2013-12-03 | 2014-11-19 | Composite film for electrochemical element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013250260 | 2013-12-03 | ||
JP2013-250260 | 2013-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015083546A1 true WO2015083546A1 (ja) | 2015-06-11 |
Family
ID=53273313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/080628 WO2015083546A1 (ja) | 2013-12-03 | 2014-11-19 | 電気化学素子用複合膜 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160308231A1 (ja) |
EP (1) | EP3079191B1 (ja) |
JP (1) | JP6471097B2 (ja) |
KR (1) | KR20160093016A (ja) |
CN (1) | CN105765762A (ja) |
WO (1) | WO2015083546A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018507096A (ja) * | 2014-12-24 | 2018-03-15 | コーロン ファッション マテリアル インコーポレイテッド | イオン伝導体の充填特性に優れた多孔性支持体、その製造方法及びそれを含む強化膜 |
JP2019220278A (ja) * | 2018-06-15 | 2019-12-26 | 住友化学株式会社 | 非水電解液二次電池用多孔質層 |
WO2021246218A1 (ja) * | 2020-06-05 | 2021-12-09 | 株式会社バルカー | フッ素ゴム繊維、フッ素ゴム不織布およびフッ素ゴム繊維の製造方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107534129B (zh) * | 2015-04-06 | 2021-02-02 | 株式会社东芝 | 电极、电极组及非水电解质电池 |
KR102218062B1 (ko) | 2018-10-18 | 2021-02-19 | 주식회사 엘지화학 | 불소계 수지 다공성 막 및 이의 제조방법 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5160773A (ja) | 1974-09-26 | 1976-05-26 | Ici Ltd | |
JPH01149360A (ja) | 1987-12-04 | 1989-06-12 | Nitto Denko Corp | 電池用セパレータ |
JP2002317058A (ja) * | 2001-04-23 | 2002-10-31 | Daikin Ind Ltd | 膜 体 |
JP2003132910A (ja) | 2001-10-29 | 2003-05-09 | Matsushita Electric Ind Co Ltd | 高分子電解質膜とこれを用いた燃料電池 |
JP2003297394A (ja) * | 2002-03-29 | 2003-10-17 | Masao Sudo | 固体高分子形燃料電池用電解質膜及びその製造方法 |
JP2009070675A (ja) * | 2007-09-13 | 2009-04-02 | Fuji Electric Holdings Co Ltd | 固体高分子形燃料電池用膜電極接合体 |
JP2009245639A (ja) * | 2008-03-28 | 2009-10-22 | Asahi Glass Co Ltd | 固体高分子形燃料電池用電解質膜、その製造方法及び固体高分子形燃料電池用膜電極接合体 |
JP2010155233A (ja) | 2008-12-26 | 2010-07-15 | General Electric Co <Ge> | 複合膜及び製造法 |
JP2012515850A (ja) | 2009-01-16 | 2012-07-12 | ゼウス インダストリアル プロダクツ, インコーポレイテッド | 高粘度材料を含むptfeのエレクトロスピニング |
JP2013062240A (ja) * | 2011-08-22 | 2013-04-04 | Toray Ind Inc | 複合化高分子電解質膜 |
WO2013084760A1 (ja) * | 2011-12-05 | 2013-06-13 | 日本バルカー工業株式会社 | フッ素樹脂繊維を含んでなるフッ素樹脂系シートおよびその製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2577710A1 (en) * | 2004-08-18 | 2006-02-23 | Asahi Glass Company, Limited | Electrolyte polymer for fuel cells, process for its production, electrolyte membrane and membrane/electrode assembly |
JP5163209B2 (ja) * | 2008-03-21 | 2013-03-13 | 旭硝子株式会社 | 固体高分子形燃料電池用電解質膜、その製造方法及び固体高分子形燃料電池用膜電極接合体 |
CN101807678B (zh) * | 2009-02-18 | 2013-11-13 | 大连融科储能技术发展有限公司 | 电解质隔膜及其复合膜在酸性电解液液流储能电池中应用 |
CN101510614A (zh) * | 2009-03-13 | 2009-08-19 | 华南理工大学 | 燃料电池用增强型保水复合膜及其制备方法 |
US9893373B2 (en) * | 2010-05-25 | 2018-02-13 | 3M Innovative Properties Company | Reinforced electrolyte membrane |
RU2598584C2 (ru) * | 2011-03-09 | 2016-09-27 | Борд Оф Риджентс Оф Дзе Юниверсити Оф Техас Систем | Устройства и способы для получения волокон |
CN103372381B (zh) * | 2012-04-19 | 2015-04-08 | 中国科学技术大学 | 一种阴离子交换膜及其制备方法和燃料电池 |
-
2014
- 2014-11-19 EP EP14867342.9A patent/EP3079191B1/en active Active
- 2014-11-19 JP JP2015551455A patent/JP6471097B2/ja active Active
- 2014-11-19 CN CN201480065690.7A patent/CN105765762A/zh active Pending
- 2014-11-19 KR KR1020167015401A patent/KR20160093016A/ko not_active Application Discontinuation
- 2014-11-19 US US15/100,772 patent/US20160308231A1/en not_active Abandoned
- 2014-11-19 WO PCT/JP2014/080628 patent/WO2015083546A1/ja active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5160773A (ja) | 1974-09-26 | 1976-05-26 | Ici Ltd | |
JPH01149360A (ja) | 1987-12-04 | 1989-06-12 | Nitto Denko Corp | 電池用セパレータ |
JP2002317058A (ja) * | 2001-04-23 | 2002-10-31 | Daikin Ind Ltd | 膜 体 |
JP2003132910A (ja) | 2001-10-29 | 2003-05-09 | Matsushita Electric Ind Co Ltd | 高分子電解質膜とこれを用いた燃料電池 |
JP2003297394A (ja) * | 2002-03-29 | 2003-10-17 | Masao Sudo | 固体高分子形燃料電池用電解質膜及びその製造方法 |
JP2009070675A (ja) * | 2007-09-13 | 2009-04-02 | Fuji Electric Holdings Co Ltd | 固体高分子形燃料電池用膜電極接合体 |
JP2009245639A (ja) * | 2008-03-28 | 2009-10-22 | Asahi Glass Co Ltd | 固体高分子形燃料電池用電解質膜、その製造方法及び固体高分子形燃料電池用膜電極接合体 |
JP2010155233A (ja) | 2008-12-26 | 2010-07-15 | General Electric Co <Ge> | 複合膜及び製造法 |
JP2012515850A (ja) | 2009-01-16 | 2012-07-12 | ゼウス インダストリアル プロダクツ, インコーポレイテッド | 高粘度材料を含むptfeのエレクトロスピニング |
JP2013062240A (ja) * | 2011-08-22 | 2013-04-04 | Toray Ind Inc | 複合化高分子電解質膜 |
WO2013084760A1 (ja) * | 2011-12-05 | 2013-06-13 | 日本バルカー工業株式会社 | フッ素樹脂繊維を含んでなるフッ素樹脂系シートおよびその製造方法 |
Non-Patent Citations (2)
Title |
---|
KAZUAKI TSUJI ET AL.: "PTFE Nanofiber Fushokufu", VALQUA TECHNOLOGY NEWS, 2012, pages 13 - 15, XP008183711 * |
See also references of EP3079191A4 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018507096A (ja) * | 2014-12-24 | 2018-03-15 | コーロン ファッション マテリアル インコーポレイテッド | イオン伝導体の充填特性に優れた多孔性支持体、その製造方法及びそれを含む強化膜 |
JP2019220278A (ja) * | 2018-06-15 | 2019-12-26 | 住友化学株式会社 | 非水電解液二次電池用多孔質層 |
JP7189687B2 (ja) | 2018-06-15 | 2022-12-14 | 住友化学株式会社 | 非水電解液二次電池用多孔質層 |
WO2021246218A1 (ja) * | 2020-06-05 | 2021-12-09 | 株式会社バルカー | フッ素ゴム繊維、フッ素ゴム不織布およびフッ素ゴム繊維の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2015083546A1 (ja) | 2017-03-16 |
EP3079191A4 (en) | 2017-04-26 |
US20160308231A1 (en) | 2016-10-20 |
EP3079191A1 (en) | 2016-10-12 |
KR20160093016A (ko) | 2016-08-05 |
EP3079191B1 (en) | 2019-07-24 |
CN105765762A (zh) | 2016-07-13 |
JP6471097B2 (ja) | 2019-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6471097B2 (ja) | 電気化学素子用複合膜 | |
JP5434079B2 (ja) | 極細繊維、及びイオン伝導性複合高分子膜並びにその製造方法 | |
KR102140121B1 (ko) | 다공성 기재를 포함하는 강화-복합 전해질막 및 이의 제조방법 | |
JP6868685B2 (ja) | 複合高分子電解質膜 | |
KR20130114187A (ko) | Pem 적용을 위한 양자 전도성 멤브레인을 보강하기 위한 다공성 나노-섬유 매트 | |
KR20120109258A (ko) | 이차 전지 섬유상 분리막 및 그 제조 방법 | |
JP2017510722A (ja) | 多孔性支持体、その製造方法及びそれを含む強化膜 | |
KR101833600B1 (ko) | 연료 전지용의 전해질막 및 그 제조 방법, 및 막전극 접합체 및 연료 전지 | |
KR20190001558A (ko) | 나노 섬유 방사층을 포함하는 연료전지용 전해질막 | |
KR101451567B1 (ko) | 다공성 지지체, 이의 제조방법, 및 이를 포함하는 강화막 | |
WO2016194707A1 (ja) | 機能性複合膜の製造方法 | |
JP2011069011A (ja) | 繊維集合体 | |
Vargun et al. | Biodegradable porous polylactic acid film as a separator for supercapacitors | |
JP2006190627A (ja) | 補強材を有する高分子固体電解質膜 | |
JP5432033B2 (ja) | 高分子電解質膜 | |
Wang et al. | Balancing dimensional stability and performance of proton exchange membrane using hydrophilic nanofibers as the supports | |
JP7058493B2 (ja) | 繊維シート及び繊維シートの製造方法 | |
JP2018507096A (ja) | イオン伝導体の充填特性に優れた多孔性支持体、その製造方法及びそれを含む強化膜 | |
JP2016058152A (ja) | 樹脂補強体の製造方法、樹脂補強体、高分子電解質補強膜、膜−電極接合体、及び固体高分子形燃料電池 | |
JP2008238134A (ja) | イオン交換性フィルタおよびその製造方法 | |
KR20110129113A (ko) | 고분자 전해질 나노섬유 웹 | |
JP2021170458A (ja) | 電気化学素子用の分離膜支持体 | |
JP7107770B2 (ja) | 構造体 | |
TW201011963A (en) | Acidic nano-fiber/basic polymer used as composite proton exchange membrane and method for manufacturing the same | |
JP2020125556A (ja) | 不織布、および、該不織布を支持体として備える複合膜 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14867342 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015551455 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15100772 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2014867342 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014867342 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20167015401 Country of ref document: KR Kind code of ref document: A |