Abstract: antifogging agent including silica particles, a hinder compound, a silane coupling agent having a polyether group, and a liquid medium.

Abstract: A method for evaluating water film is a method for evaluating water film uniformity, and the method includes: a first step of preparing a base material for water film formation having a principal surface for forming a water film thereon; a second step of capturing an image of an object having a pattern in which a plurality of regions having predetermined brightness are disposed in a predetermined area, through the base material for water film formation having a water film formed on the principal surface, to obtain an image for evaluation; and a third step of deriving a water film uniformity index indicating uniformity of the water film based on the area distribution of the regions having predetermined brightness in the image for evaluation.

Abstract: One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1), wherein a content of the compound is 10% by mass or less based on the total amount of the electrolytic solution, wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a nitrogen atom.

Abstract: One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1): wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a sulfur atom.

Abstract: The present invention provides, as one aspect, an electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2): wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and wherein R6 to R8 each independently represent an alkyl group or a fluorine atom, R9 represents an alkylene group, and R10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.

Abstract: One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1), wherein a content of the compound is 10% by mass or less based on the total amount of the electrolytic solution, wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a nitrogen atom.

Abstract: One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1): wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a sulfur atom.

Abstract: The present invention provides, as one aspect, an electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2): wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and wherein R6 to R8 each independently represent an alkyl group or a fluorine atom, R9 represents an alkylene group, and R10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.

Abstract: A lithium-ion secondary battery contains: a positive electrode that contains a positive electrode active material including a lithium nickel manganese complex oxide having a spinel structure, and contains an electroconductive agent including a non-crystalline carbon and graphite; and a negative electrode that contains a negative electrode active material in which lithium ions are inserted and eliminated at an electric potential of 1.2 V or more with respect to an electric potential of lithium.

Abstract: A lithium-ion battery system includes: a lithium-ion battery including a cathode and an anode, the cathode containing a lithium manganese-nickel complex oxide as a cathode active material, and the anode containing a lithium-titanium complex oxide as an anode active material; and a charge regulation means which regulates an end-of-charge voltage Vf within a range of 3.6 V?Vf?4.0 V.

Abstract: A lithium-ion secondary battery contains: a positive electrode including a lithium nickel manganese complex oxide as a positive electrode active material; a negative electrode; and an electrolyte solution; in which the electrolyte solution includes dimethyl carbonate as a nonaqueous solvent, and an end-of-charge voltage is in a range from 3.4 V to 3.8 V and an end-of-discharge voltage is in a range from 2.0 V to 2.8 V.

Abstract: A lithium-ion battery includes: a positive electrode, a negative electrode, and an electrolyte solution; in which the positive electrode comprises a current collector, and a positive electrode material mixture that is placed on at least one side of the current collector, in which the positive electrode material mixture comprises a positive electrode conductive material, a lithium nickel manganese complex oxide as a positive electrode active material, and a resin having a structural unit derived from a nitrile group-containing monomer as a positive electrode binder, and in which n a density of the positive electrode material mixture is from 2.5 g/cm3 to 3.2 g/cm3.

Abstract: A lithium-ion battery system includes: a lithium-ion battery including a cathode and an anode, the cathode containing a lithium manganese-nickel complex oxide as a cathode active material, and the anode containing a lithium-titanium complex oxide as an anode active material; and a charge regulation means which regulates an end-of-charge voltage Vf within a range of 3.6 V?Vf?4.0 V.