Abstract: Provided is a composition for an electrochemical device, containing a single-walled carbon nanotube, a binder, and a solvent, wherein the binder comprises a fluorine-containing copolymer comprising a repeating unit (a) based on vinylidene fluoride, and at least one repeating unit (b) selected from the group consisting of a repeating unit (b1) and a repeating unit (b2).

Abstract: Provided is a composition for an electrochemical device, comprising a nanocarbon material, a binder, and a solvent, wherein the nanocarbon material is at least one selected from the group consisting of a multi-walled carbon nanotube, a carbon nanohorn, a carbon nanofiber, a fullerene, and a graphene, and the binder comprises a fluorine-containing copolymer comprising a repeating unit (a) based on vinylidene fluoride and at least one repeating unit (b) selected from the group consisting of a repeating unit (b1) and a repeating unit (b2).

Abstract: A composition including a fluorine-containing polymer and a cross-linking agent, wherein the fluorine-containing polymer contains a vinylidene fluoride unit, a unit of a fluorine-containing monomer (1) represented by the following general formula (1): CHX1?CX2Rf??(1) wherein one of X1 and X2 is H, the other is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms, and a unit of a monomer providing a crosslinking site. The monomer providing a crosslinking site is a monomer having at least one crosslinkable group selected from a cyano group, a carboxyl group, an alkoxycarbonyl group and a hydroxyl group. Also disclosed is a crosslinked rubber molded article obtained by crosslinking the composition.

Abstract: A copolymer having a structure derived from 1,2-difluoroethylene, and a formed article thereof is provided. A copolymer contains a structural unit (A) derived from 1,2-difluoroethylene, a structural unit (B) derived from tetrafluoroethylene, and a structural unit (C) represented by the following structural formula (1): In structural formula (1), R1 is fluorine, a partly or wholly fluorinated hydrocarbon group having 5 or less carbon atoms, or OR5 group. R5 group is a partly or wholly fluorinated hydrocarbon group having 5 or less carbon atoms and R2, R3 and R4 are each independently hydrogen or fluorine. A copolymerization ratio between the structural unit (A) and the structural unit (B) is 10/90 to 85/15 mol %. A content of the structural unit (C) is 0.1 to 30 mol % relative to the total amount of resin.

Abstract: The cell of the present invention includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode includes a porous carbon sheet and a positive electrode active material layer containing a positive electrode active material that is held in pores of the porous carbon sheet. It is preferable that the positive electrode active material layer covers the surface of the porous carbon sheet facing the separator, that a part of the positive electrode active material layer is held in the pores of the porous carbon sheet, and that the surface of the positive electrode active material layer facing the separator has an arithmetic average roughness (Ra) of 10 ?m or less or a maximum height roughness (Rz) of 50 ?m or less.

Abstract: One aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte solution that are housed in a sheet-like outer case. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12. The electrolyte solution contains a water-soluble high-boiling solvent with a boiling point of 150° C. or more in an amount of 1 to 30% by mass of the total solvent. Another aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte that are housed in a sheet-like outer case. The electrolyte is obtained by blending an electrolyte solution and a thickening agent. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12.

Abstract: Provided is a sheet-type cell with excellent reliability. The sheet-type cell of the present invention includes power generation elements, including a positive electrode, a negative electrode, a separator, and an electrolyte solution, and a sheet-type outer case made of a resin film in which the power generation elements are contained. The electrolyte solution is an aqueous electrolyte solution. The resin film has an electrically insulating moisture barrier layer. The sheet-type cell is a primary cell. The moisture barrier layer of the resin film is preferably composed of at least an inorganic oxide. The pH of the electrolyte solution is preferably 3 or more and less than 12.

Abstract: Provided are a novel polymer having a structure derived from 1,2-difluoroethylene, and a production method thereof. A fluorine-containing polymer including a structural unit represented by a following general formula (1) partly or as a whole, and having a glass transition temperature of 100° C.

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 Rf2are 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: One aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte solution that are housed in a sheet-like outer case. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12. The electrolyte solution contains a water-soluble high-boiling solvent with a boiling point of 150° C. or more in an amount of 3 to 30% by mass of the total solvent. Another aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte that are housed in a sheet-like outer case. The electrolyte is obtained by blending an electrolyte solution and a thickening agent. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12.

Abstract: Provided is a binder for a battery, including a fluorine-containing copolymer, wherein the fluorine-containing copolymer comprises a repeating unit (a) based on vinylidene fluoride and at least one repeating unit (b) selected from the group consisting of a repeating unit (bl) represented by a specific structural formula (bl) and a repeating unit (b2) represented by a structural formula (b2), and the fluorine-containing copolymer has a molar ratio of the repeating unit (a) to the repeating unit (b), (a)/(b), of 95/5 to 5/95.

Abstract: The flat-shaped battery of the present invention comprises a battery container provided with an outer can and a sealing plate, and a positive electrode, a negative electrode, a separator, and an electrolyte solution are enclosed in the battery container. The positive electrode is housed in the outer can, and a porous electrolyte solution absorber is inserted between the positive electrode and an inner bottom surface of the outer can. Also, the method for manufacturing a flat-shaped battery, including: disposing an electrolyte solution absorber on an inner bottom surface of the outer can; disposing the positive electrode on the electrolyte solution absorber; and injecting the electrolyte solution into the outer can after disposing the electrolyte solution absorber, before or after disposing the positive electrode. A porous body having a porosity of 40 to 90% is used as the electrolyte solution absorber.

Abstract: Provided is a wearable patch that can reliably interrupt the power supply from the cell after use and can be disposed of as it is. Moreover, provided is a sheet-type cell that can reliably interrupt the power supply after use and can be disposed of safely. The wearable patch is worn on the body and includes a functional element, a drive circuit unit that operates the functional element, and a cell as a power source. A cutting facilitating member is formed to allow a predetermined portion of the wearable patch to be cut with a force of 200 N or less so that the power supply from the cell to the drive circuit unit is interrupted.

Abstract: The alkaline battery of the present invention includes, as power generation components, a positive electrode containing silver oxide as a positive electrode active material, a negative electrode, a separator, and an alkaline electrolyte solution. At least one of the power generation components contains tellurium or a compound of tellurium. The total content of tellurium element contained in components housed in the battery is 0.4 parts by mass or more with respect to 100 parts by mass of the total amount of silver element in the positive electrode active material. The positive electrode is substantially free of cadmium.

Abstract: Provided is a waterproof device that is impervious to water and can also use an air cell as a power source. The waterproof device of the present disclosure is worn on the body and includes a circuit unit, a power source, and an exterior package that protects the circuit unit and the power source. At least a part of the exterior package is composed of a water-repellent air-permeable sheet. The water-repellent air-permeable sheet has a water pressure resistance of 12 kPa or more.

Abstract: A member to be compressed for an electrochemical device obtained by crosslinking a crosslinkable composition containing a fluorine-containing elastomer containing a unit based on at least one crosslinkable group-containing monomer selected from the group consisting of a crosslinkable group-containing monomer (1) represented by the general formula (1): CX12?CF—Rf1—X2 wherein each X1 independently represents H or F, and Rf1 represents a fluorinated alkylene group or a fluorinated oxyalkylene group, and X2 represents I or Br; and a crosslinkable group-containing monomer (2) represented by the general formula (2): CX32?CX3—Z1—CX3?CX32 wherein each X3 independently represents H, F, an alkyl group or a fluorinated alkyl group, and Z1 represents an alkylene group, a fluorinated alkylene group, a cycloalkylene group, a fluorinated cycloalkylene group, an oxyalkylene group or a fluorinated oxyalkylene group.

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 fluorine-containing elastomer in which resin end functional groups satisfy: 0.01?([—CH2OH]+[—COOH])/([—CH3]+[—CF2H]+[—CH2OH]+[—CH2I]+[—OC(O)RH]+[—COOH]?0.25 where R represents an alkyl group with 1 to 20 carbon atoms. 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: 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: where 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 member to be compressed for an electrochemical device obtained by crosslinking a crosslinkable composition containing a fluorine-containing elastomer, wherein the fluorine-containing elastomer exhibits a difference ?G? (G?(100° C.)?G?(180° C.)) between the storage elastic modulus G?(100° C.) at a measurement temperature of 100° C. and the storage elastic modulus G?(180° C.) at a measurement temperature of 180° C., in the dynamic viscoelasticity test (strain amplitude: 0.5 Deg; frequency: 100 CPM) with a rubber process analyzer satisfying the following conditions: 40 kPa<?G?<175 kPa.

Abstract: A sheet-type cell disclosed in this application includes an outer case and a power generation element contained in the outer case. The power generation element includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The separator is constituted by a porous resin sheet. The outer case includes a first outer case member and a second outer case member. Each outer case member includes a thermally fusible resin layer. The first outer case member and the second outer case member are disposed on respective opposite sides of the power generation element. A periphery of the first outer case member and a periphery of the second outer case member are sealed by thermally welding, with a periphery of the separator interposed between the peripheries of the first and second outer case members.