Samsung Sdi Co., Inc.

Iwao Fukuchi

Jung-Hyun Nam

Jong-Hwan Park

Koji Hoshiba

Tomoyuki Fukatani

June Hyoung Park

Takahiro Endo

An embodiment provides a binder for a non-aqueous electrolyte rechargeable battery including a copolymer (A) and a copolymer (B), wherein the copolymer (A) includes a unit (a-1) derived from a (meth)acrylic acid-based monomer, and a unit (a-2) derived from a (meth)acrylonitrile monomer, and the copolymer (B) includes a unit (b-1) derived from an aromatic vinyl-based monomer; and a unit (b-2) derived from an ethylenic unsaturated monomer which is at least one of an unsaturated carboxylic acid alkylester monomer, a (meth)acrylic acid-based monomer, a unsaturated carboxylic acid amide monomer, or combinations thereof.

Binder for non-aqueous electrolyte rechargeable battery, negative electrode slurry for rechargeable battery including the same, negative electrode for rechargeable battery including the same, and rechargeable battery including the same

The present application relates to a binder for a secondary battery. The binder includes a first copolymer unit including a carboxyl group-containing acrylic monomer and at least one of an acrylic acid derivative monomer and a substituted or unsubstituted styrene and a second copolymer unit including a residue of a polymer azo initiator. A mass ratio of the second copolymer unit relative to a total mass of the first copolymer unit and the second copolymer unit is 10 mass % to 40 mass %.

Binder for secondary battery, binder resin composition for secondary battery, electrode for secondary battery, and secondary battery

A separator for a rechargeable battery includes a substrate and a coating layer on at least one surface of the substrate, wherein the coating layer includes a binder including an acrylic resin, the binder including the acrylic resin includes a carboxyl group-containing acrylic monomer and an acrylic acid derivative monomer, and the carboxyl group-containing acrylic monomer and the acrylic acid derivative monomer are present in a mole ratio of about 20:80 to about 80:20. The binder for a rechargeable battery has high heat resistance and strong adherence, and improves the cycling characteristics of the battery.

Separator for rechargeable battery and rechargeable battery including the same

A binder for a rechargeable battery includes an IPN-type acrylic-based resin including a hard segment having a glass transition temperature ranging from greater than or equal to about 50&#xb0; C. and less than equal to about 200&#xb0; C. and a soft segment having a glass transition temperature in a range of greater than or equal to about &#x2212;100&#xb0; C. and less than or equal to about 30&#xb0; C.

Binder for rechargeable battery, separator for rechargeable battery including same, and rechargeable battery including same

A separator for a battery, a battery, and a method of preparing a graft copolymer for a binder, the separator including a porous substrate; a coating layer on at least one surface of the porous substrate, the coating layer including an inorganic oxide; and a binder between the porous substrate and the inorganic oxide or between adjacent particles of the inorganic oxide, the binder including a graft copolymer, wherein the graft copolymer has a backbone of a polyvinylidene fluoride-based polymer or a polyvinylidene fluoride-based copolymer, and a pendant chain grafted to the backbone, the pendant chain including a hydrophilic repeating unit, and fluorine atoms in the backbone of the graft copolymer are partially substituted with at least one of chlorine, bromine, or iodine.

Binder composition, separator including binder formed from the binder composition, lithium battery including the separator, and method of preparing the binder composition

A negative electrode for a rechargeable lithium battery is disclosed. The negative electrode includes a current collector and a negative active material layer positioned on the current collector and including a negative active material and a binder, wherein the negative active material includes a silicon-based material, a tin-based material, or a combination thereof, and the binder includes an organic acid including a carboxyl group-containing polymer and an organic base having a cyclic structure. A method of preparing the same, and a rechargeable lithium battery including the same are also disclosed.

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Yokohama, Japan

Iwao Fukuchi