Abstract: An electrolyte solution capable of reducing the initial resistance of an electrochemical device, and an electrochemical device including the electrolyte solution. The electrolyte solution contains a compound represented by formula (I-1): wherein R111 to R113 are each individually a C1-C4 linear alkyl group, and wherein the compound (1-1) is present in an amount of 0.01-1000 mass ppm relative to the electrolyte solution.

Abstract: An electrolyte solution containing a compound represented by the following formula (1).

Abstract: A positive electrode mixture containing a polyvinylidene fluoride (A); a fluorine-containing copolymer (B) containing vinylidene fluoride unit and tetrafluoroethylene unit; a positive electrode active material (C) represented by the general formula (C): LiyNi1-xMxO2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D). Also disclosed is a positive electrode formed from the positive electrode mixture and a secondary battery including the positive electrode.

Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.

Abstract: A positive electrode mixture containing: a polyvinylidene fluoride (A); a positive electrode active material (C) represented by the general formula (C): LiyNi1-XMxO2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D), wherein the polyvinylidene fluoride (A) is a combination of: (A2) a polymer containing vinylidene fluoride unit and a fluorinated monomer unit; and at least one selected from the group consisting of (A3) a polymer containing vinylidene fluoride unit and a polar group-containing monomer unit, and (A4) a polymer containing vinylidene fluoride unit, a fluorinated monomer unit, and a polar group-containing monomer unit. Also disclosed is a positive electrode famed from the positive electrode mixture and a secondary battery including the positive electrode.

Abstract: A watch includes a crystal oscillator, a controller including an oscillation circuit configured to cause the crystal oscillator to oscillate, wiring that couples the crystal oscillator with the controller, and the crystal oscillator, a storage container that stores the crystal oscillator, the wiring, and the controller, and an outer case that stores the storage container, in which the crystal oscillator and the controller are placed side by side inside the storage container in plan view.

Abstract: An electrolyte solution containing a compound (1) represented by the formula (1), (wherein R101 and R102 are each individually a substituent such as a C1-C7 alkyl group, and the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group) and at least one compound (11) selected from compounds such as a compound represented by formula (11-1) (wherein R111 and R112 are the same as or different from each other and are each a hydrogen atom or the like, and R113 is an alkyl group free from a fluorine atom or the like):

Abstract: An electrolyte solution including a solvent, the solvent containing a compound (1a) represented by the following formula (1a); and a compound (2) represented by the following formula (2): wherein Re is a C1-C5 linear or branched alkyl group optionally containing an ether bond; Rf is a C1-C5 linear or branched alkyl group optionally containing an ether bond; and at least one of Re or Rf contains a fluorine atom. Also disclosed is an electrochemical device including the electrolyte solution, a lithium-ion secondary battery including the electrolyte solution, and a module including the electrochemical device or the lithium-ion secondary battery.

Abstract: An electrolyte solution for an alkali metal-sulfur-based secondary battery, an alkali metal-sulfur-based secondary battery, and a module containing the alkali metal-sulfur-based secondary battery. The electrolyte solution includes a positive electrode containing a carbon composite material that contains a carbon material and a sulfur-containing positive electrode active material. The carbon material has a pore volume ratio (micropores/mesopores) of 1.5 or higher. The electrolyte solution contains a fluorinated ether represented by the following formula (1): R11—(OR12)n11—O—R13. In the formula, R11 and R13 are the same as or different from each other, and are each an alkyl group optionally containing a fluorine atom, with at least one of R11 or R13 containing a fluorine atom; R12 is an alkylene group optionally containing a fluorine atom; and n11 is 0, 1, or 2.

Abstract: A compound and composition each capable of allowing an electrochemical device to have improved cycle characteristics, low resistance, and reduced gas generation. Also disclosed is an electrochemical device, a lithium-ion secondary battery, and a module each including the composition as an electrolytic solution. More particularly, the disclosure relates to an electrolytic solution containing a compound represented by the following formula (1): Rf1—O—Rf2??(1) wherein Rf1 and Rf2 are the same as or different from each other and are each a C2-C4 fluorinated alkenyl group.

Abstract: A binder containing a mixed powder including a polytetrafluoroethylene resin and a single-walled carbon nanotube. A weight ratio of the polytetrafluoroethylene resin to the single-walled carbon nanotube is 99.9:0.1 to 80:20. Also disclosed is a composition for producing an electrode in a form of a powder including the binder and an electrode active material substantially free of a liquid medium; an electrode mixture including the composition for producing an electrode; an electrode using the electrode mixture; a secondary battery having the electrode; a method for producing the binder; and a method for producing the electrode.

Abstract: A method for producing a compound represented by formula (P1): (B1f)mp(A1)np, wherein B1f is RfCOO, Rf is a hydrocarbon having one or more fluorine atoms, A1 is a group excluding H, mp is (valence of A1)×np and is 1 or 2, np is mp/(valence of A1) and is 1, A1 has a valence of 1 or 2, the method comprising step A of reacting a compound represented by formula (S1): (B1f)(R1), wherein B1f is as defined above, and R1 is an organic group, and a compound represented by formula (S2): (A1)ms2(B2)ns2, wherein A1 is as defined above, B2 is OH, CO3, or HCO3, ms2 is (valence of B2)×ns2/(valence of A1) and is 1 or 2, and ns2 is (valence of A1)×ms2/(valence of B2) and 1 or 2, or a hydrate thereof. Such a method is a novel production method of a fluorinated carboxylic acid salt compound (preferably a fluorinated carboxylic acid salt compound having a low water content).

Abstract: An electrochemical device which is an alkali metal battery or an alkaline earth metal battery, wherein only a positive electrode is an electrode having a perfluoropolyether group-containing compound in a surface thereof.

Abstract: An all-solid-state secondary battery mixture, a secondary battery electrode mixture sheet containing the all-solid-state secondary battery mixture, and a secondary battery including the all-solid-state secondary battery sheet. Also provided is a method for producing an all-solid-state secondary battery sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The all-solid-state secondary battery mixture includes a solid-state electrolyte and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the all-solid-state secondary battery mixture sheet contains the all-solid-state secondary battery mixture.

Abstract: A secondary battery electrode mixture, a secondary battery electrode mixture sheet containing the electrode mixture, and a secondary battery including the secondary battery electrode mixture sheet. Also provided is a method for producing an electrode mixture sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The secondary battery electrode mixture includes an electrode active material and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the secondary battery electrode mixture sheet contains the electrode mixture.

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: An electrolyte solution containing a compound represented by the following formula (1): wherein R101 and R102 are the same as or different from each other and are each a hydrogen atom, a fluorine atom, or an alkyl group optionally containing a fluorine atom; and R103 is an alkyl group or an organic group containing an unsaturated carbon-carbon bond. Also disclosed is an electrochemical device and lithium ion secondary battery including the electrolyte solution, and a module including the electrochemical device or lithium ion secondary battery.

Abstract: An electrolytic solution containing: a compound (1) represented by the following formula (1): wherein R101 is a C2-C7 organic group and optionally includes at least one selected from the group consisting of a hetero atom and an unsaturated bond; and R102 is a C1-C3 organic group and optionally includes at least one selected from the group consisting of a hetero atom and an unsaturated bond.

Abstract: A binder for an electrochemical device made of a polymer material including a first polymer containing a first constituent unit having a guest group in a side chain; and a second polymer containing a second constituent unit having a host group in a side chain. Also disclosed is an electrode mixture containing the binder, an electrode active material and a dispersion medium; an electrode containing the binder, an electrode active material and a current collector; an electrochemical device including the electrode; and a secondary battery including the electrode.

Abstract: An electrolyte solution containing: a compound (1) represented by the following formula (1): wherein R101 to R103 are each independently a C1-C5 organic group optionally containing at least one selected from the group consisting of a hetero atom and an unsaturated bond, and R101 to R103 form no ring.