Abstract: Provided is a nonaqueous electrolyte secondary battery laminated separator that makes it possible to reduce an increase in alternating-current resistance after compression. A nonaqueous electrolyte secondary battery in accordance with an embodiment includes: a nonaqueous electrolyte secondary battery functional layer; and a polyolefin base material, the nonaqueous electrolyte secondary battery functional layer and the polyolefin base material being formed on top of each other, after the nonaqueous electrolyte secondary battery laminated separator is subjected to pressure application at 20 MPa, the nonaqueous electrolyte secondary battery functional layer having a compressibility of not less than 15%, and the polyolefin base material having a compressibility of not more than 5%.

Abstract: Provided is a nonaqueous electrolyte secondary battery functional layer that makes it possible to achieve an enhanced high-rate discharge capacity after pressure application. A nonaqueous electrolyte secondary battery functional layer in accordance with an embodiment is configured such that: the nonaqueous electrolyte secondary battery functional layer has an internal void volume of not less than 2.5 mL/m2; and the nonaqueous electrolyte secondary battery functional layer has a surface having an uneven space volume of not less than 0.5 mL/m2.

Abstract: A nonaqueous electrolyte secondary battery functional layer makes it possible to achieve lower electrode resistance after pressure application. A nonaqueous electrolyte secondary battery functional layer in accordance with an embodiment of the disclosure has an area ratio of pores satisfying all of the following conditions 1 to 3 of not less than 3% by area with respect to all pores present in a cross section of the nonaqueous electrolyte secondary battery functional layer, the condition 1 being that a maximum Feret diameter is not less than 0.5 ?m, the condition 2 being that an angle at which a pore takes on the maximum Feret diameter is 60° to 120° with respect to an in-plane direction of the nonaqueous electrolyte secondary battery functional layer, and the condition 3 being that the maximum Feret diameter/a minimum Feret diameter has a value of not less than 1.2.

Abstract: Provided is a nonaqueous electrolyte secondary battery laminated separator that makes it possible to achieve both maintenance of sufficient air permeability and maintenance of voltage resistance during compression. A nonaqueous electrolyte secondary battery laminated separator in accordance with an embodiment includes: a nonaqueous electrolyte secondary battery functional layer; and a polyolefin base material, the nonaqueous electrolyte secondary battery functional layer and the polyolefin base material being formed on top of each other, wherein the nonaqueous electrolyte secondary battery functional layer contains a filler, the filler that has a particle diameter of not less than 0.1 ?m has a volume fraction of not less than 15% by volume in the nonaqueous electrolyte secondary battery functional layer, and a ratio of contact between the polyolefin base material and the filler that has a particle diameter of not less than 0.1 ?m is not more than 7%.

Abstract: Provided is a nonaqueous electrolyte secondary battery functional layer that has an improved cycle characteristic when an electrode with a great change in volume is used. A nonaqueous electrolyte secondary battery functional layer in accordance with an embodiment of the disclosure is configured such that an area ratio of pores each having a cross-sectional area of not less than 0.1 ?m2 is not less than 30% by area with respect to all pores present in a cross section of the nonaqueous electrolyte secondary battery functional layer.

Abstract: Provided is a nonaqueous electrolyte secondary battery functional layer that makes it possible to reduce an increase in air permeability (Gurley value) during compression. A nonaqueous electrolyte secondary battery functional layer in accordance with an embodiment contains a first filler and a second filler, the first filler having an average particle diameter of not more than 0.03 ?m, and the second filler having an average particle diameter of not less than 1 ?m.

Abstract: Provided is a nonaqueous electrolyte secondary battery laminated separator that makes it possible to reduce a reduction in discharge capacity after cycles even in a state in which the nonaqueous electrolyte secondary battery laminated separator is compressed.

Abstract: Provided is a nonaqueous electrolyte secondary battery separator which is excellent in withstand voltage property, in conformability to external force, and in liquid retention property. The nonaqueous electrolyte secondary battery separator includes: a porous film containing a polyolefin-based resin as a main component; and a porous layer containing a resin and formed on one surface or both surfaces of the porous film, the porous layer having an air permeability of not more than 500 sec/100 mL in terms of Gurley values and having an open area ratio of not more than 2%.

Abstract: An aspect of the present invention achieves a nonaqueous electrolyte secondary battery porous layer that has both favorable ion permeability and favorable heat resistance despite being thin. A nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a thickness of less than 8 ?m and an elastic modulus in a shear direction of not less than 16 GPa.

Abstract: Provided is a nonaqueous electrolyte secondary battery porous layer which can constitute a nonaqueous electrolyte secondary battery separator which achieves both heat resistance and improvement of a rate characteristic of a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery porous layer includes: a resin containing an amide bond; and a filler, and has a porosity of not less than 75%, the filler containing a filler A which has an average particle diameter of not more than 0.04 ?m and a filler B which has an average particle diameter of not less than 0.1 ?m.

Abstract: As a nonaqueous electrolyte secondary battery porous layer that is excellent in durability with respect to charge-discharge cycles, provided is a nonaqueous electrolyte secondary battery porous layer including a resin which has an amide bond and which contains a component that is to be eluted into N-methylpyrrolidone. A contained amount of the component that is to be eluted into N-methylpyrrolidone is not less than 6.0% by weight and not more than 25.0% by weight relative to a total weight of the resin having the amide bond.

Abstract: As a nonaqueous electrolyte secondary battery porous layer which can improve battery performance such as initial charge-discharge efficiency of a nonaqueous electrolyte secondary battery, provided is a nonaqueous electrolyte secondary battery porous layer which contains a resin that has an amide bond and that contains a cyclic component, and in which a contained amount of the cyclic component is not less than 2.0% by weight and not more than 10.0% by weight relative to a total weight of the resin having the amide bond.

Abstract: Provided is a nonaqueous electrolyte secondary battery porous layer which is capable of improving a capacity maintenance ratio shown when a nonaqueous electrolyte secondary battery is repeatedly subjected to a charge-discharge cycle. The nonaqueous electrolyte secondary battery porous layer contains at least one type of a resin having an amide bond, and an aspect ratio of a pore therein is not less than 1.0 and not more than 2.2.

Abstract: Provided is a nonaqueous electrolyte secondary battery porous layer which has both high-voltage resistance and adhesiveness. The nonaqueous electrolyte secondary battery porous layer contains: a block copolymer; and a filler, the block copolymer having: a block A containing, as a main component, units each represented by “—(NH—Ar1—O—NHCO—Ar2—CO)—”; and a block B containing, as a main component, units each represented by “—(NH—Ar313 NHCO—Ar4—CO—)—”. Not less than 50% of all Ar1 each have a structure in which two aromatic rings are connected by a sulfonyl bond. Not more than 50% of all Ar3 each have a structure in which two aromatic rings are connected by a sulfonyl bond. 30% to 70% of all Ar1 and Ar3 each have a structure in which two aromatic rings are connected by a sulfonyl bond.

Abstract: A nonaqueous electrolyte secondary battery porous layer which has both high-voltage resistance and adhesiveness is provided. The nonaqueous electrolyte secondary battery porous layer contains a resin A, a resin B, and a filler. The resin A has a structure in which a plurality of aromatic rings are connected by chemical bonds, at least some of the chemical bonds being amide bonds, at least some of the chemical bonds being sulfonyl bonds. The resin B is a nitrogen-containing aromatic polymer. The nonaqueous electrolyte secondary battery porous layer contains the resin A in an amount of 20 parts by weight to 80 parts by weight, when a total amount of the resin A and the resin B is regarded as 100 parts by weight.

Abstract: A composition which makes it possible to easily find defects of a nonaqueous electrolyte secondary battery laminated separator is provided. The composition includes a solvent and an aramid resin in which (i) each of aromatic rings in a main chain has an electron-withdrawing group, (ii) at least one end of a molecule is an amino group, and (iii) more than 90% of bonds with which the aromatic rings in the main chain are connected to each other are amide bonds.

Abstract: A nonaqueous electrolyte secondary battery laminated separator which is not altered in properties even after long-time charging under a high voltage condition and excels in heat resistance is described. The nonaqueous electrolyte secondary battery laminated separator includes a polyolefin porous film and a porous layer, the porous layer contains a binder resin and a filler, and an area of an opening in the nonaqueous electrolyte secondary battery laminated separator is 7.0 mm2 or less when the nonaqueous electrolyte secondary battery laminated separator is subjected to a certain heat resistance test.

Abstract: An aspect of the present invention provides a nonaqueous electrolyte secondary battery porous layer that has both favorable ion permeability and favorable peeling strength. A nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention includes: a resin; and a filler, the nonaqueous electrolyte secondary battery porous layer having a thickness of less than 8.0 ?m, the nonaqueous electrolyte secondary battery porous layer having a surface roughness (Ra) of not more than 0.15 ?m.

Abstract: An aspect of the present invention achieves a nonaqueous electrolyte secondary battery porous layer that has both favorable ion permeability and favorable heat resistance despite being thin. A nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a thickness of less than 8 ?m and an elastic modulus in a shear direction of not less than 16 GPa.

Abstract: The present invention is to provide a composition that can provide an electroluminescent device emitting light with high brightness. The present invention provides following: a composition including a polymer compound comprising one or more structural unit(s) selected from the group consisting of a structural unit represented by Formula (1), a structural unit represented by Formula (3), a structural unit represented by Formula (5), a structural unit represented by Formula (16), a structural unit represented by Formula (18), a structural unit represented by Formula (20), and a structural unit represented by Formula (22) and an ionic compound represented by Formula (23); an organic film and an electric device comprising the composition.