The present application relates to a pinning composition, a laminate comprising the same, and a method for producing the same. The pinning composition of the present application can impart directionality and location selection properties to a polymer membrane comprising a self-assembly structure of a block copolymer. The pinning composition of the present application exhibits excellent reaction selectivity, whereby it can form a vertical lamella structure with a high degree of alignment. In addition, the pinning composition of the present application may be suitable for application to low temperature processes.

An anti-forgery color conversion film includes a photonic crystal structure whose color is converted by an external stimulus such as a breath. The photonic crystal structure includes a first refractive index layer including a first polymer exhibiting a first refractive index; and a second refractive index layer which is alternately laminated with the first refractive index layer and includes a second polymer exhibiting a second refractive index. A consumer who purchases an article including the color conversion film may easily distinguish the authenticity of the article.

An anti-forgery color conversion film includes a photonic crystal structure whose color is converted by an external stimulus such as a breath. The photonic crystal structure includes a first refractive index layer including a first polymer exhibiting a first refractive index; and a second refractive index layer which is alternately laminated with the first refractive index layer and includes a second polymer exhibiting a second refractive index. A consumer who purchases an article including the color conversion film may easily distinguish the authenticity of the article.

The present invention relates to a separator for a secondary battery and a lithium secondary battery including the separator, the separator including: a porous substrate and a heat-resistant layer disposed on at least one surface of the porous substrate, wherein the heat-resistant layer includes an acrylic heat-resistant binder, an adhering binder, and a filler, the acrylic heat-resistant binder including a structural unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing structural unit, and a sulfonate group-containing structural unit, the adhering binder includes a structural unit including a structural unit including hydroxyl group, a structural unit including an acetate group, and a structural unit including an alkali metal.

Provided is a slurry for lithium ion secondary battery positive electrode-use that includes a positive electrode active material, a binding material, a conductive material, and an organic solvent. The positive electrode active material is a lithium cobalt-based composite oxide particle having an oxide of at least one metal selected from the group consisting of Mg, Ca, Al, B, Ti, and Zr on its surface. The binding material includes a polymer (P1) and a fluorine-containing polymer (P2). The polymer (P1) includes a nitrile group-containing monomer unit, a (meth)acrylic acid ester monomer unit, and an alkylene structural unit having a carbon number of at least 4, and does not substantially include a hydrophilic group-containing monomer unit.

Provided is a slurry for lithium ion secondary battery positive electrode-use that includes a positive electrode active material, a binding material, a conductive material, and an organic solvent. The positive electrode active material is a lithium cobalt-based composite oxide particle having an oxide of at least one metal selected from the group consisting of Mg, Ca, Al, B, Ti, and Zr on its surface. The binding material includes a polymer (P1) and a fluorine-containing polymer (P2). The polymer (P1) includes a nitrile group-containing monomer unit, a (meth)acrylic acid ester monomer unit, and an alkylene structural unit having a carbon number of at least 4, and does not substantially include a hydrophilic group-containing monomer unit.

A separation composite membrane, including a porous support layer, and a separation layer provided on the porous support layer and contains the following polymer a1 and b1; a separation membrane module; a separator; and a composition for forming a membrane suitable for preparing the separation composite membrane.

Polymer a1: A polymer whose ratio of a permeation rate of carbon dioxide to a permeation rate of methane is 15 or greater, and the permeation rate of the carbon dioxide is smaller than that in the polymer b1 and which has a solubility parameter of 21 or greater

Polymer b1: A polymer whose permeation rate of carbon dioxide is 200 GPU or greater, and a ratio of the permeation rate of the carbon dioxide to methane is smaller than that in the polymer a1 and which has a solubility parameter of 16.5 or less

A silicon material can include a silicon aggregate comprising a plurality of porous silicon nanoparticles welded together. The silicon aggregate can optionally have a polyhedral morphology. A method can include: receiving a plurality of porous silicon nanoparticles and cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle.

A silicon material can include a silicon aggregate comprising a plurality of porous silicon nanoparticles welded together. The silicon aggregate can optionally have a polyhedral morphology. A method can include: receiving a plurality of porous silicon nanoparticles and cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle.

The present invention provides an electrical storage device binder composition that can produce an electrode that achieves improved charge-discharge characteristics. The composition includes a polymer (A) and a liquid medium (B), and further includes particles having a particle size of 10 to 50 micrometers in a number of 1,000 to 100,000 per mL.