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.

Abstract: An electrolyte solution containing at least one selected from a compound (I) represented by the following formula (I) and specific compounds (II). The formula (I) is as follows: wherein R11 is a C2-C6 alkyl group. Also disclosed are a secondary battery containing the electrolyte solution and a module including the electrochemical device or the secondary battery.

Abstract: An electrolyte solution for a lithium ion secondary battery, containing a compound (1) represented by the following formula (1): wherein R1 and R2 are each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10?6 to 1.0×103 ppm. Also disclosed is an electrolyte solution for a lithium ion secondary battery, containing an imidazolium cation (1-1) represented by the following formula (1-1), a bis(oxalato)borate anion, and a hexafluorophosphate anion, the formula (1-1) being: wherein R1 and R2 are each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10?6 to 1.0×103 ppm.

Abstract: A resin composition including a first polymer having a host group in a side chain and a second polymer having a carboxyl group in a side chain, wherein the first polymer has a hydroxyl group. Also disclosed is a polymer having a host group (A) and a carboxyl group (B), wherein the polymer has a number-average molecular weight of 50,000 to 5,000,000; a method for producing a polymer which includes performing an ester group-forming reaction with a first polymer having a host group in a side chain and a second polymer having a carboxyl group in a side chain; a binder for an electrochemical device including the polymer; an electrode mixture including the binder; an electrode including the binder; an electrochemical device including the electrode; and a secondary battery including the electrode.

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: The invention provides an electrolyte solution capable of providing an electrochemical device having low resistance and excellent high-temperature storage characteristics and cycle characteristics. The electrolyte solution contains lithium fluorosulfonate and a solvent containing a compound (1) represented by the following formula (1): CF2HCOOCH3.

Abstract: An electrolyte solution containing a solvent and a compound represented by the following formula (1), wherein R1 is a C1-C5 linear or branched non-fluorinated alkyl group optionally containing an ether bond. 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 lithium ion secondary battery.

Abstract: An electrolyte solution containing at least one selected from a compound represented by the following formula (1-1) (wherein Rf111s are the same as or different from each other and are each a C2-C4 fluorinated alkenyl group), a compound represented by the following formula (1-2) (wherein R121 is a C1-C4 alkyl group; and Rf121 is a C2-C4 fluorinated alkenyl group), and a compound represented by the following formula (1-3) (wherein Rf131 is a C1-C3 fluorinated alkyl group; and R131 is a C6-C12 aryl group):

Abstract: The disclosure provides an electrolyte solution that enables a lithium ion secondary battery to have reduced initial resistance, a small increase in resistance at high-temperature cycles, and reduced gas generation at high temperature. The electrolyte solution for a lithium ion secondary battery contains lithium difluorophosphate, an oxalic acid ion, and a compound (1) represented by the following formula (1): wherein R1 and R2 are each independently a methyl group, an ethyl group, a propyl group, or a butyl group.

Abstract: Provided is an electrode mixture containing a lithium-containing transition metal oxide; a conductive additive; a binder; and an organic solvent, wherein the conductive additive comprises at least one nanocarbon material selected from the group consisting of a multilayer carbon nanotube, a carbon nanohorn, a carbon nanofiber, a fullerene, and a graphene, the binder comprises a fluorine-containing copolymer comprising vinylidene fluoride unit and a fluorinated monomer unit, provided that vinylidene fluoride unit is excluded from the fluorinated monomer unit, and a content of vinylidene fluoride unit in the fluorine-containing copolymer is more than 50 mol % and 99 mol % or less with respect to all monomer units.

Abstract: Provided is a lithium sulfur secondary battery excellent in durability. An electrolytic solution to be used for a lithium sulfur secondary battery having a positive electrode containing a sulfur-containing electrode active material containing at least one selected from the group consisting of simple sulfur, lithium polysulfides (Li2Sn: 1<n<8) and organosulfur compounds, and a negative electrode containing a material that occludes and releases lithium ions, the electrolytic solution containing a nonaqueous electrolyte and a solvent, wherein the solvent contains vinylene carbonate in a proportion of 10 to 100% by weight.

Abstract: An electrolyte solution containing a solvent. The solvent contains a compound (1) represented by the following formula (1), wherein Ra, Rb, Rc, and Rd are the same as or different from each other, and are each —H, —F, —CH3, or —CF3; at least one of Ra, Rb, Rc, or Rd is —F or —CF3; and at least one of Ra, Rb, Rc, or Rd is —CH3, and a compound (2) represented by the following formula (2), wherein Re is a C1-C5 linear or branched alkyl or alkoxy 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.

Abstract: An electrolytic solution for an alkali metal ion secondary battery, an alkali metal ion secondary battery including the electrolytic solution and a module including the alkali metal ion secondary battery. The alkali metal ion secondary battery includes a positive electrode and a negative electrode. The positive electrode includes at least one selected from an alkali metal-containing transition metal composite oxide and an alkali metal-containing transition metal phosphate compound. The negative electrode includes at least one selected from a tin-based material and an alkali metal-containing metal composite oxide material.

Abstract: An alkali metal electrode treatment agent including an acrylate represented by the following general formula (1): wherein X, Y and Rf are as defined herein and/or a polymer containing an acrylate represented by the general formula (1) as a part or all of its constituent units. Also disclosed is an electrolytic solution for an alkali metal secondary battery and an alkali metal electrode including the acrylate represented by the general formula (1), an alkali metal secondary battery including the alkali metal electrode, and a module including the alkali metal secondary battery.

Abstract: An electrode including a fluoropolyether group-containing compound, wherein the fluoropolyether group-containing compound is a fluoropolyether group-containing compound represented by the following formula (1) or (2): RF1?—XARSi???(1) RSi?—XA—RF2—XA—RSi???(2) ; an electrochemical device including the electrode; a module including the electrochemical device; and a lithium ion secondary battery including the electrode.

Abstract: An electrolytic solution for a secondary battery, a secondary battery containing the electrolytic solution, and a module including the same. The secondary battery includes comprising a positive electrode and a negative electrode containing an alkali metal. The positive electrode includes at least one compound selected from an alkali metal-containing transition metal composite oxide and an alkali metal-containing transition metal phosphate compound.

Abstract: An electrolyte solution contains tris(trimethylsilyl) phosphite and at least one fluorinated saturated cyclic carbonate (1) selected from pentafluoropropylethylene carbonate and heptafluoroisobutylethylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution.

Abstract: Provided is a binder for an electrochemical device, which can follow the volume change of an electrode structure due to discharge and charge and can improve a life characteristic of the electrochemical device. A binder for an electrochemical device, which is a binder for a secondary battery containing a polymer having at least one cyclic host group in a molecule, wherein the host group is present as a side chain of the polymer, and a main chain of the polymer penetrates through at least a part of the cyclic host groups.

Abstract: An electrolytic solution, a lithium-sulfur secondary battery including the electrolytic solution and a module. The lithium-sulfur secondary battery has a positive electrode or a negative electrode containing a sulfur-containing electrode active material containing at least one selected from simple sulfur, lithium polysulfides (Li2Sn: 1?n?8) and organosulfur compounds. The electrolytic solution contains: a fluorinated ether represented by: Rf—(OR1)n—O—R2; an ether compound represented by: R4—(OCHR3CH2)x—OR5; and an alkali metal salt, wherein Rf, R1, R2, R3, R4, R5, n and x are as defined herein.

Abstract: A compound represented by the following formula (1): wherein R101 to R103, each independently, are a C1-C6 organic group, optionally contain at least one selected from the group consisting of a hetero atom and an unsaturated bond, and are optionally linear, branched, or cyclic. Also disclosed is an electrolyte solution containing the compound, an electrochemical device containing the electrolyte solution, a lithium ion secondary battery containing the electrolyte solution and a module including the electrochemical device or the lithium ion secondary battery.