Abstract: An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by R11X11—SO3M11 and compounds represented by R21R22N—SO3M21 in an amount of 0.001 to 10 mass % relative to the solvent.

Abstract: A stator capable of preventing the displacement of insulators and securely positioning the insulators at given positions. A stator includes a stator core formed with slots; a coil wound around the stator core, the coil comprising a coil side and a coil end, the coil end arranged outside the slot; and insulators provided in the slots. Each insulator includes a coil side-insulation part arranged between wall surfaces of a slot and a first coil side and electrically insulating the wall surfaces from the first coil side; and a coil end-insulation part formed in one piece with the coil side-insulation part and arranged outside the first slot. The coil end-insulation part is arranged between a first coil end and a second coil end and electrically insulates the first coil end from the second coil end.

Abstract: A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. Its non-aqueous liquid electrolyte contains carbonate having unsaturated bond and/or halogen and compounds like LiPF6 and/or LiBF4 (first lithium salt) and lithium salt different from said first one, represented by formula below (second lithium salt). Li1(?mXan) (In the formula, l, m and n represent integers of 1 to 10, 1 to 100 and 1 to 200, respectively. ? represents boron, carbon, nitrogen, oxygen or phosphorus. Xa represents functional group having atom selected from 14th to 17th groups of periodic table at its binding-position to ?. Two or more of Xa may be connected to each other to form a ring structure. However, such a case where a is boron and Xa is compound represented by (CiH2(i-2)O4)(CjH2(j-2)O4) is omitted (i and j represent integers of 2 or larger.

Abstract: The present invention provides an electrolyte solution that is capable of dealing with an increased voltage of an electrochemical device, as well as capable of improving the high-temperature storage characteristics and cycle characteristics of the electrochemical device, and an electrochemical device. The electrolyte solution includes a solvent containing a fluorinated saturated cyclic carbonate and a fluorinated acyclic carbonate; at least one sulfur-containing compound selected from the group consisting of compounds having a —SO2— bond, compounds having a —SO3— bond, and compounds having a —SO4— bond, and an electrolyte salt. The fluorinated acyclic carbonate has a fluorine content of 31.0 to 70.0 mass %.

Abstract: A construction machine includes: a partition member partitioning an accommodation space in an engine compartment into a main chamber and an intake chamber while having an inter-chamber opening; a fan disposed in the main chamber to generate cooling air flowing through an air intake opening, the intake chamber, the inter-chamber opening, and the main chamber in this order by sucking air in the engine compartment in a suction direction; a duct joined to an outer wall to enclose the air intake opening and including an inner peripheral surface enclosing a duct passage leading to the air intake opening and an outer peripheral surface. The duct extends in a duct extension direction different from the suction direction of the fan, disposed in the intake chamber to define a duct surrounding space around the outer peripheral surface of the duct.

Abstract: An electrolyte solution for an electrochemical device, such as a lithium secondary battery, or module. The electrolyte solution contains a solvent; an electrolyte salt; at least one compound (X) selected from a compound represented by R11X11—SO3M11 and a compound represented by R21R22N—SO3M21; and at least one organosilicon compound selected from a compound represented by (R31)n31-M31-O—SiR32R33R34 and a compound represented by R41R42R43—Si—F, where R11, X11, M11, R21, R22, M21, R41, R42 and R43 are as defined herein.

Abstract: A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. The non-aqueous liquid electrolyte of the battery contains carbonate having unsaturated bond and/or halogen and and an anhydride compound.

Abstract: An electrolyte solution containing a compound represented by the following formula (1): wherein Rf is a C1-C8 fluorinated alkyl group, and vinylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the lithium ion secondary battery.

Abstract: The present invention provides an electrolyte solution that is capable of dealing with an increased voltage of an electrochemical device, improving the high-temperature storage characteristics, and restraining an increase in resistance, and an electrochemical device. The electrolyte solution includes a solvent containing a fluorinated acyclic carbonate having a fluorine content of 33 to 70 mass %, a borate, and an electrolyte salt other than the borate.

Abstract: A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. The non-aqueous liquid electrolyte of the battery contains carbonate having unsaturated bond and/or halogen and and an anhydride compound.

Abstract: An unsaturated cyclic carbonate containing a fluorinated alkyl group represented by the following formula: wherein Rf is a C1-C8 fluorinated alkyl group.

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: Provided is an electrolyte solution for secondary batteries that are less likely to generate gas and excellent in high-temperature storage characteristics; an electrochemical device using the electrolyte solution; and a module using the electrochemical device. The electrolyte solution contains a solvent and an electrolyte salt, the solvent containing a fluorine-containing acyclic carbonate represented by the formula (1) and a fluorine-containing maleic anhydride represented by the formula (2). The electrolyte solution contains not less than 0.001 mass % but less than 90 vol % of the fluorine-containing acyclic carbonate, and the electrolyte solution contains 0.001 to 20 mass % of the fluorine-containing maleic anhydride.

Abstract: The present invention aims to provide an electrolyte solution that suppresses generation of gas. The electrolyte solution of the present invention includes a non-aqueous solvent (I) containing one or both of a fluorinated cyclic carbonate and a fluorinated acyclic carbonate; an electrolyte salt (II); and a compound (III) represented by the following formula (1): wherein R1 is a C1-C20 linear or branched alkenyl or alkyl group or a C3-C20 alkyl group having a cyclic structure; m is 0 or 1; R2 is a C1-C20 linear or branched alkylene group or a C3-C20 alkylene group having a cyclic structure, R1 and R2 each may have an oxygen atom between carbon atoms if R1 and R2 each have two or more carbon atoms, but the oxygen atom is not adjacent to another oxygen atom.

Abstract: A method for manufacturing a phosphate, which includes reacting, in a solvent, an organophosphate represented by the following formula (2) and an alkali metal hydroxide in an amount of 1.01 mole equivalents or more relative to the organophosphate to provide a composition containing a phosphate represented by the following formula (1), the alkali metal hydroxide, and the solvent; and adding hydrogen fluoride to the composition to neutralize the composition and to precipitate an alkali metal fluoride, thereby providing a composition containing the precipitated alkali metal fluoride, the phosphate represented by the formula (1), and the solvent. The formula (1) is (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein. The formula (2) is (R21O)(R22O)(R23O)PO, where R21, R22, and R23 are as defined herein.

Abstract: An electrolyte solution including a solvent, an electrolyte salt, and at least one compound (?) selected from an amine (A) represented by the formula (A): (wherein R1 and R2 may be the same as or different from each other, and individually represent a C1-C7 alkyl group; Rf1 represents a C1-C7 fluorinated alkyl group), and an amide (B) represented by the formula (B): (wherein R3, R4, and R5 may be the same as or different from each other, and individually represent a C1-C7 alkyl group). The amount of the compound (?) is 0.001 to 20 ppm in the electrolyte solution.

Abstract: An unsaturated cyclic carbonate containing a fluorinated alkyl group represented by the following formula: wherein Rf is a C1-C8 fluorinated alkyl group.

Abstract: An electrolyte solution including a solvent and an electrolyte salt. The solvent contains a compound (A) represented by the formula (A) in an amount of 0.001 to 10 ppm in the electrolyte solution: wherein R1 and R2 may be the same as or different from each other, and individually represent a C1-C7 alkyl group.

Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device (e.g., a lithium ion secondary battery) or a module that is less likely to generate gas even in high-temperature storage and has high capacity retention even after high-temperature storage. The present invention relates to an electrolytic solution which may contain a compound represented by Y21R21C—CY22R22 wherein R21 and R22 may be the same as or different from each other, and are each H, an alkyl group, or a halogenated alkyl group; Y21 and Y22 may be the same as or different from each other, and are each —OR23 or a halogen atom; and R23 is H, an alkyl group, or a halogenated alkyl group.

Abstract: The present invention provides an electrolytic solution capable of restraining gas generation. The present invention relates to an electrolytic solution containing a nonaqueous solvent (I), an electrolyte salt (II), and a compound (III) represented by the following formula (1): wherein Rf represents a C1-C20 linear or branched fluorinated alkyl group or a C3-C20 fluorinated alkyl group having a cyclic structure, R represents a C1-C20 linear or branched alkylene group or a C3-C20 alkylene group having a cyclic structure, hydrogen atoms in R may be partially or fully replaced by fluorine atoms, Rf and R may each contain an oxygen atom between carbon atoms when having a carbon number of 2 or more as long as oxygen atoms are not adjacent to each other.