Abstract: Provided is a binder for a non-aqueous electrolyte battery, comprising a polymer comprising a segment A having a glass transition temperature of 25° C. or less and a segment B having a melting point of 50° C. or more.

Abstract: The object of the present invention is to provide a means capable of improving ion conductively in an electrolyte solution for lithium secondary battery. This object can be solved by an electrolyte solution for lithium secondary battery containing a lithium salt, a carbonate-based first solvent and a fluorinated ether-based second solvent, wherein the ratio of the number of moles of the fluorinated ether-based second solvent to the number of moles of the lithium atoms in the lithium salt is 0.4 or more and 2.0 or less, and the electrolyte solution for lithium secondary battery exhibits a specific profile in its Raman spectrum measured by micro-Raman spectroscopy.

Abstract: Provided is a binder for a solid-state electrolyte battery, comprising a polymer comprising a segment A having a glass transition temperature of 25° C. or less and a segment B having a melting point of 50° C. or more.

Abstract: A polytetrafluoroethylene composition for use in an electrochemical device binder, the polytetrafluoroethylene composition being homogenously mixable with powder components in electrochemical devices and being capable of providing a mixture sheet having excellent strength and excellent flexibility. An electrochemical device binder, an electrode mixture, an electrode, and a secondary battery each containing the polytetrafluoroethylene composition. A polytetrafluoroethylene composition for use in an electrochemical device binder, the polytetrafluoroethylene composition including polytetrafluoroethylene containing polytetrafluoroethylene particles having a particle size of 1 ?m or greater.

Abstract: A polytetrafluoroethylene for use in an electrochemical device binder, the polytetrafluoroethylene being less prone to fibrillation during transportation and having ease of feeding. An electrochemical device binder, an electrode mixture, an electrode, and a secondary battery each containing the polytetrafluoroethylene. A polytetrafluoroethylene for use in an electrochemical device binder, the polytetrafluoroethylene having a specific surface area of 0.5 m2/g or more and less than 7.0 m2/g.

Abstract: The disclosure aims to provide a container in which polytetrafluoroethylene is less likely to fibrillate. The disclosure relates to a container for filling with polytetrafluoroethylene, the container having a columnar shape with an inner wall of a side surface tapered either forward or inversely.

Abstract: Provided is a method for producing a secondary battery electrode, using PTFE, capable of reducing electrical resistance thereof and achieving excellent strength at the same time, and a binder. A method for producing a secondary battery electrode using a non-aqueous electrolytic solution, including step (1) of preparing a powder composition for producing an electrode by using a binder that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid and which is free of an active material, and step (2) of applying a shear force while mixing the composition for producing an electrode to obtain an electrode mixture, wherein step (2) is carried out with a content of a solvent in the composition for producing an electrode being 10% by mass or less.

Abstract: Method for producing a solid-state secondary battery electrode, using PTFE, capable of reducing resistance of the electrode and achieving strength of a positive electrode mixture sheet, and a binder. Method for producing a solid-state secondary battery sheet, including (1) preparing a composition for producing a secondary battery sheet by using a binder that is a powder which comprises a polytetrafluoroethylene resin and a conductive aid homogeneously mixed and which is free of an active material, and (2) applying a shear force while mixing the composition for producing a secondary battery sheet to obtain an electrode mixture, wherein step (2) is carried out with a content of a solvent in the composition for producing a secondary battery sheet being 10% by mass or less.

Abstract: Provided are a composite that can be suitably used as an electrolyte in polymer-based solid-state batteries, and various electrochemical devices using the composite. The composite includes a fluorine-containing elastomer and an alkali metal salt as essential components, wherein the fluorine-containing elastomer is an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, and the composite has a volatile content of 0.1 mass % or less with respect to the entire composite.

Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a polymer including a vinylidene fluoride unit and at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) below and a monomer unit having a structure represented by formula (2) below: wherein Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more. The slurry contains sulfide-based solid electrolyte particles, the binder and a solvent. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

Abstract: Provided is a tetrafluoroethylene-based polymer composition for use in an electrochemical device binder, the tetrafluoroethylene-based polymer composition being homogenously mixable with powder components in electrochemical devices and being capable of providing a mixture sheet having excellent strength and excellent flexibility. Also provided are an electrochemical device binder, an electrode mixture, an electrode, and a secondary battery each containing the tetrafluoroethylene-based polymer composition. The present invention relates to a tetrafluoroethylene-based polymer composition for use in an electrochemical device binder, the tetrafluoroethylene-based polymer composition having endothermic peaks in a region (A) of 330° C. or higher and lower than 340° C. and in a region (B) of 340° C. or higher and 350° C. or lower in differential scanning calorimetry.

Abstract: An oxide-based solid-state secondary battery and a binder for a solid-state secondary battery using an oxide-based solid electrolyte that contains a fluorine-containing polymer including a vinylidene fluoride unit and a fluorinated monomer unit other than the vinylidene fluoride unit. The fluorinated monomer unit is at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) and a monomer unit having a structure represented by formula (2): wherein Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more.

Abstract: A TFE-based polymer composition for an electrochemical device binder for reducing or preventing gas generation inside an electrochemical device cell and deterioration of electrochemical device characteristics and improve the mixture sheet strength. A TFE-based polymer composition for use in an electrochemical device binder, containing: a TFE-based polymer; and at least one compound represented by formula (1) or compound represented by formula (2), the tetrafluoroethylene-based polymer composition being substantially free from water: wherein m is 4 to 20; M1 is H, a metal atom, NR54 (where R5s are optionally the same or different from each other and each represent H or a C1-C10 organic group), or the like; and p is 1 or 2, and wherein n is 4 to 20; M2 is H, a metal atom, NR54 (where R5 is as defined above), or the like; and q is 1 or 2.

Abstract: An electrochemical device mixture with which a mixture sheet exhibiting excellent strength and excellent flexibility can be obtained even though the mixture contains only a small amount of binder. An electrochemical device mixture containing: an electrode active material and/or a solid electrolyte; and a binder, the binder containing a TFE-based polymer composition, the TFE-based polymer composition containing a TFE-based polymer and at least one compound selected from the group consisting of a compound represented by the formula (1) of the disclosure (H—(CF2)m-1—COO)pM1) and a compound represented by the formula (2) of the disclosure (H—(CF2)n—SO3)qM2), the binder being contained in an amount of 0.3% by mass or more and 8% by mass or less.

Abstract: A self-supporting electrochemical device mixture film exhibiting excellent strength and flexibility without a support. A self-supporting electrochemical device mixture film containing: at least one of an electrode active material or a solid electrolyte; and a binder, the binder containing a TFE-based polymer composition, the TFE-based polymer composition containing a TFE-based polymer and at least one compound selected from the group consisting of a compound of formula (1) and a compound represented of formula (2): wherein m is 4 to 20; M1 is H, a metal atom, NR54 (where R5s are optionally the same or different from each other and each represent H or a C1-C10 organic group), or the like; and p is 1 or 2, and wherein n is 4 to 20; M2 is H, a metal atom, NR54 (where R5 is defined above), or the like; and q is 1 or 2.

Abstract: The disclosure provides a TFE-based polymer composition for a solid-state secondary battery binder capable of improving the mixture sheet strength. Provided is a TFE-based polymer composition for use in a solid-state secondary battery binder, containing: a TFE-based polymer; and at least one compound selected from the group consisting of a compound represented by the formula (1) and a compound represented by the formula (2): wherein m is 4 to 20; M1 is H, a metal atom, NR54 (where R5s are optionally the same as or different from each other and each represent H or a C1-C10 organic group), or the like; and p is 1 or 2, and wherein n is 4 to 20; M2 is H, a metal atom, NR54 (where R5 is as defined above), or the like; and q is 1 or 2.

Abstract: An electrolytic solution that enables improvement in durability of an electrochemical device, reduction of the amount of gas generated therein, and reduction of the amount of metal precipitated therein, and an electrochemical device and a secondary battery using the electrolytic solution. An electrolytic solution including at least one compound represented by the formula (1) of the disclosure (i.e., Rf1OR, wherein Rf1 is a fluorinated alkyl group having 1 to 5 carbon atoms, and R is K or Na).

Abstract: Provided is a fluoropolymer composition for use in an electrochemical device binder, the fluoropolymer composition being homogenously mixable with powder components in electrochemical devices and being capable of providing a mixture sheet having excellent strength and excellent flexibility. Also provided are an electrochemical device binder, an electrode mixture, an electrode, and a secondary battery each containing the fluoropolymer composition. The present disclosure relates to a fluoropolymer composition for use in an electrochemical device binder, the fluoropolymer composition containing a fluoropolymer. The fluoropolymer contains two or more tetrafluoroethylene-based polymers.

Abstract: The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device which can not only reduce or prevent gas generation inside the cell of an electrochemical device and deterioration of characteristics of the electrochemical device but also improve the strength of a mixture sheet, as well as a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. The tetrafluoroethylene-based polymer composition is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device. The composition contains a tetrafluoroethylene-based polymer and a macromolecular compound containing an ionic group and is substantially free from water.

Abstract: The disclosure provides an electrochemical device mixture capable of providing a mixture sheet exhibiting excellent strength and excellent flexibility while containing a small amount of binder, and an electrochemical device mixture sheet, an electrode, and an electrochemical device each containing the electrochemical device mixture. The electrochemical device mixture contains an electrode active material and/or a solid electrolyte; and a binder. The binder contains a tetrafluoroethylene-based polymer composition. the tetrafluoroethylene-based polymer composition contains a tetrafluoroethylene-based polymer and a macromolecular compound containing an ionic group. The binder is contained in an amount of 0.3% by mass or more and 8% by mass or less relative to the electrochemical device mixture.