Abstract: A separator for a rechargeable battery includes a porous substrate and a heat resistance layer on at least one surface of the porous substrate. The heat resistance layer includes an acryl-based copolymer, an alkali metal, and a filler. The acryl-based copolymer includes a unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing unit, and a sulfonate group-containing unit.

Abstract: A separator for a rechargeable battery includes a porous substrate and a heat resistance layer on at least one surface of the porous substrate. The heat resistance layer includes an acryl-based copolymer, an alkali metal, and a filler. The acryl-based copolymer includes a unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing unit, and a sulfonate group-containing unit.

Abstract: 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.

Abstract: 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.

Abstract: In an aspect, a binder composition, a cathode including the same, and a lithium battery including the cathode, wherein the binder composition includes a first fluorine containing binder including a polar functional group; a second fluorine containing binder not including a polar functional group; and a non-fluorine containing binder including a repeating unit resulting from polymerization of an acryl monomer and a repeating unit resulting from polymerization of an olefin monomer, wherein the first fluorine containing binder is a vinylidene fluoride containing binder is provided.

Abstract: A separator for a lithium battery includes a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer having a first side adjacent to the porous substrate, and a second side opposite the first side. The coating layer may include an inorganic compound and a polymer binder, and an amount of the polymer binder at the second side is greater than an amount of the polymer binder at the first side. A rechargeable lithium battery includes the separator.

Abstract: A separator including a porous base material layer and a coating layer disposed on at least one surface of the porous base material layer, wherein the coating layer includes the binder composition, and a binder film comprising the binder composition has an elongation of 10% or less measured after maintaining the binder film under a load of 50 g at 150° C. for 10 minutes, and a lithium battery including the same.

Abstract: A separator for a rechargeable battery includes a porous substrate and a heat resistance layer on at least one surface of the porous substrate. The heat resistance layer includes an acryl-based copolymer, an alkali metal, and a filler. The acryl-based copolymer includes a unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing unit, and a sulfonate group-containing unit.

Abstract: Disclosed are porous substrate and a coating layer positioned on one side or both sides of the porous substrate, wherein the coating layer includes a filler (A) having an average particle diameter of about 0.3 ?m to about 2 ?m; and a binder (B) including an organic polymer and an inorganic particle, an organic particle, or a combination thereof, wherein an average particle diameter of each of the inorganic particle and the organic particle is about 5 nm to about 200 nm, and a rechargeable lithium battery including the separator.

Abstract: A polymer includes a first repeating unit having a cationic group and a second repeating unit having an anionic group. The polymer may further include a third repeating unit having a non-ionic group. The polymer may include first and second polymers, each of which includes a first repeating having a cationic group and a second repeating unit having an anionic group. The cationic group of the first polymer may form an intermolecular bond with the anionic group of the second polymer, and the anionic group of the first polymer may form an intermolecular bond with the cationic group of the second polymer. An electrode for a lithium secondary battery includes the polymer, and a lithium secondary battery employs the electrode.

Abstract: A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer disposed on one or more sides of the porous substrate, the coating layer including organic particles and a binder polymer, wherein the organic particles include a material different from that of the binder polymer and the binder polymer is included in the coating layer in an amount in a range of 50 to 99 wt % based on the total amount of the coating layer, and a rechargeable lithium battery including the same.

Abstract: In one aspect, a separator that includes a porous substrate; and a coating layer including an inorganic compound-organic/inorganic binder, and a binder polymer, and a rechargeable lithium battery including the separator is provided.

Abstract: In an aspect, a binder composition, a cathode including the same, and a lithium battery including the cathode, wherein the binder composition includes a first fluorine containing binder including a polar functional group; a second fluorine containing binder not including a polar functional group; and a non-fluorine containing binder including a repeating unit resulting from polymerization of an acryl monomer and a repeating unit resulting from polymerization of an olefin monomer, wherein the first fluorine containing binder is a vinylidene fluoride containing binder is provided.

Abstract: A separator including a porous base material layer and a coating layer disposed on at least one surface of the porous base material layer, wherein the coating layer includes the binder composition, and a binder film comprising the binder composition has an elongation of 10% or less measured after maintaining the binder film under a load of 50 g at 150° C. for 10 minutes, and a lithium battery including the same.

Abstract: Disclosed are porous substrate and a coating layer positioned on one side or both sides of the porous substrate, wherein the coating layer includes a filler (A) having an average particle diameter of about 0.3 ?m to about 2 ?m; and a binder (B) including an organic polymer and an inorganic particle, an organic particle, or a combination thereof, wherein an average particle diameter of each of the inorganic particle and the organic particle is about 5 nm to about 200 nm, and a rechargeable lithium battery including the separator.

Abstract: A polymer includes a first repeating unit having a cationic group and a second repeating unit having an anionic group. The polymer may further include a third repeating unit having a non-ionic group. The polymer may include first and second polymers, each of which includes a first repeating having a cationic group and a second repeating unit having an anionic group. The cationic group of the first polymer may form an intermolecular bond with the anionic group of the second polymer, and the anionic group of the first polymer may form an intermolecular bond with the cationic group of the second polymer. An electrode for a lithium secondary battery includes the polymer, and a lithium secondary battery employs the electrode.

Abstract: A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer disposed on one or more sides of the porous substrate, the coating layer including organic particles and a binder polymer, wherein the organic particles include a material different from that of the binder polymer and the binder polymer is included in the coating layer in an amount in a range of 50 to 99 wt % based on the total amount of the coating layer, and a rechargeable lithium battery including the same.

Abstract: A separator for a lithium battery includes a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer having a first side adjacent to the porous substrate, and a second side opposite the first side. The coating layer may include an inorganic compound and a polymer binder, and an amount of the polymer binder at the second side is greater than an amount of the polymer binder at the first side. A rechargeable lithium battery includes the separator.

Abstract: A negative active material includes a silicon-based particle and a crystalline carbonaceous material, the crystalline carbonaceous material including a graphite particle and a carbonaceous nano-sheet.

Abstract: In one aspect, a separator that includes a porous substrate; and a coating layer including an inorganic compound-organic/inorganic binder, and a binder polymer, and a rechargeable lithium battery including the separator is provided.