Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.

Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a pre-dispersion including inorganic particles dispersed in a pre-dispersion solvent and a first binder polymer dissolved in the pre-dispersion solvent; (S2) conducting a preliminary milling of the pre-dispersion; (S3) preparing a binder polymer solution including a second binder polymer dissolved in a binder polymer solution solvent; (S4) mixing the pre-dispersion with the binder polymer solution and carrying out a secondary milling to obtain a slurry for forming a porous coating layer; and (S5) applying the slurry to at least one surface of a porous polymer substrate, followed by drying, is disclosed. A separator obtained by the method and an electrochemical device including the same are also disclosed. According to the present disclosure, it is possible to provide a separator having a uniform surface and showing improved adhesion.

Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.

Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a dispersion containing inorganic particles dispersed in a first solvent and a first binder polymer dissolved in the first solvent; (S2) preparing a binder polymer solution containing a second binder polymer dissolved in a second solvent, and mixing the binder polymer solution with the dispersion so that a combined weight of the inorganic particles and the first binder polymer in the dispersion may be 1.5-8 times of a weight of the second binder polymer in the binder polymer solution; and (S3) applying the resultant mixture to at least one surface of a porous polymer substrate, followed by drying, to form a porous coating layer on the porous polymer substrate. Also, a separator obtained by the method and an electrochemical device including the same.

Abstract: Disclosed is an electrode assembly including two electrodes having polarities opposite to each other, and a separator interposed between the two electrodes, wherein the separator includes: a separator base which includes a porous polymer substrate having a plurality of pores, and a porous coating layer; and an adhesive layer formed on at least one surface of the separator base, provided to face either of the electrodes and containing an adhesive resin, and wherein the adhesion (Peel Strength) between the porous polymer substrate and the porous coating layer and the adhesion (Lami Strength) between the adhesive layer and the electrode satisfy Mathematical Formula 1. An electrochemical device including the separator is also disclosed. In the electrode assembly, the separator shows increased resistance against scratching and the adhesion between the separator and the electrode can be improved.

Abstract: A binder resin composition comprising polyvinyl pyrrolidone-polyvinyl acetate block copolymer (PVP-co-PVAc). When introducing the binder resin composition to the porous coating layer of a separator for an electrochemical device, there an effect of significantly improving binding characteristics and heat resistance/safety.

Abstract: A separator for an electrochemical device. The separator includes a porous coating layer formed from an acid, which is crosslinkable. As a result, the separator has increased heat resistance, safety and physical strength, shows improved peel strength between the porous substrate and the porous coating layer, and prevents separation of the inorganic particles from the porous coating layer. In addition, the separator shows an improved crosslinking degree so that the added amount of a crosslinkable binder resin may be reduced. Thus, it is possible to increase the added amount of a non-crosslinkable resin, inorganic particles, or both. Even when using a small amount of a crosslinkable binder resin, it is possible to provide both an effect of improving heat resistance and an effect of improving adhesion.

Abstract: A separator for an electrochemical device and an electrochemical device comprising the same. The separator comprises a porous polymer substrate and a heat resistant coating layer on at least one surface of the porous polymer substrate. The heat resistant coating layer is a porous polymer layer having pores, and comprises a polyvinyl pyrrolidone-based polymer and a polyvinylidene fluoride (PVDF)-based polymer.

Abstract: A separator for secondary batteries, including a separator substrate having at least one surface, wherein the separator substrate comprises a polymer resin having a porous structure, a first coating layer on the separator substrate, the first coating layer includes a first inorganic material and a first binder, and a second coating layer on the first coating layer, the second coating layer includes a second inorganic material and a second binder, wherein the first coating layer further includes a third binder having a glass transition temperature lower than 30° C. and the second coating layer further includes a fourth binder having a glass transition temperature of 30° C. or higher.

Abstract: A separator with improved heat resistance and low resistance as well as Lami Strength that is equal or similar to that of the existing separator by using a predetermined amount of polyvinylpyrrolidone binder polymer relative to a polyvinylidene fluoride-based binder polymer, and a manufacturing method thereof.

Abstract: A separator for a lithium secondary battery manufacturing method thereof including a porous polymer substrate, and a porous coating layer formed on at least one surface of the porous polymer substrate, wherein the porous coating layer includes inorganic particles, a polyvinylidene fluoride-based binder polymer, a polyvinylpyrrolidone binder polymer and a dispersant. The polyvinylidene fluoride-based binder polymer and the polyvinylpyrrolidone binder polymer are not particles and coat part or all of a surface of the inorganic particles. The polyvinylidene fluoride-based binder polymer has a predetermined molecular weight and amount. The separator has improved heat resistance as well as Lami Strength that is equal to or similar to that of the existing separator.

Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a pre-dispersion including inorganic particles dispersed in a pre-dispersion solvent and a first binder polymer dissolved in the pre-dispersion solvent; (S2) conducting a preliminary milling of the pre-dispersion; (S3) preparing a binder polymer solution including a second binder polymer dissolved in a binder polymer solution solvent; (S4) mixing the pre-dispersion with the binder polymer solution and carrying out a secondary milling to obtain a slurry for forming a porous coating layer; and (S5) applying the slurry to at least one surface of a porous polymer substrate, followed by drying, is disclosed. A separator obtained by the method and an electrochemical device including the same are also disclosed. According to the present disclosure, it is possible to provide a separator having a uniform surface and showing improved adhesion.

Abstract: Disclosed in an embodiment are a semiconductor device and a semiconductor device package including the same, the semiconductor device comprising: a semiconductor structure including a first light emitting unit and a second light emitting unit; a first electrode for electrically connecting a first conductive type semiconductor layer of the first light emitting unit with a first conductive type semiconductor layer of the second light emitting unit; and a second electrode for electrically connecting a second conductive type semiconductor layer of the first light emitting unit with a second conductive type semiconductor layer of the second light emitting unit, wherein: the first electrode includes a first pad arranged on the first light emitting unit, a first branch electrode arranged on the first light emitting unit, and a first extension electrode arranged on the second light emitting unit; the second electrode includes a second pad arranged on the second light emitting unit, a second branch electrode arranged

Abstract: A separator for a secondary battery including a porous separator substrate including a polyolefin-based material and a coating layer on at least one surface of the porous separator substrate. The separator for a secondary battery has a uniform coating layer and improved adhesion force. The coating layer is a dry form of a slurry comprising a binder, an inorganic material, a mixed solvent including at least two solvents, and a dispersant, the inorganic material being a metal hydroxide and the dispersant being a compound including 10 to 30 hydroxy groups in one molecule.

Abstract: Disclosed in an embodiment are a semiconductor device and a semiconductor device package including the same, the semiconductor device comprising: a semiconductor structure including a first light emitting unit and a second light emitting unit; a first electrode for electrically connecting a first conductive type semiconductor layer of the first light emitting unit with a first conductive type semiconductor layer of the second light emitting unit; and a second electrode for electrically connecting a second conductive type semiconductor layer of the first light emitting unit with a second conductive type semiconductor layer of the second light emitting unit, wherein: the first electrode includes a first pad arranged on the first light emitting unit, a first branch electrode arranged on the first light emitting unit, and a first extension electrode arranged on the second light emitting unit; the second electrode includes a second pad arranged on the second light emitting unit, a second branch electrode arranged

Abstract: The present invention relates to a magnetic-optical composite nanostructure, which has a heterogeneous nature due to consisting of a first core-shell nanoparticle and second core-shell nanoparticles and thus realizes magnetic and optical functions at the same time.

Abstract: A separator and an electrochemical device including the same. The separator includes an adhesive layer including first adhesive resin particles having an average particle diameter corresponding to 0.8-3 times of an average particle diameter of the inorganic particles and second adhesive resin particles having an average particle diameter corresponding to 0.2-0.6 times of the average particle diameter of the inorganic particles, wherein the first adhesive resin particles are present in an amount of 30-90 wt % based on a total weight of the first adhesive resin particles and the second adhesive resin particles. The separator shows improved adhesion to an electrode and provides an electrochemical device with decreased increment in resistance after lamination with an electrode.

Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.

Abstract: A separator for secondary batteries, including a separator substrate having at least one surface, wherein the separator substrate comprises a polymer resin having a porous structure, a first coating layer on the separator substrate, the first coating layer includes a first inorganic material and a first binder, and a second coating layer on the first coating layer, the second coating layer includes a second inorganic material and a second binder, wherein the first coating layer further includes a third binder having a glass transition temperature lower than 30° C. and the second coating layer further includes a fourth binder having a glass transition temperature of 30° C. or higher.

Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a dispersion containing inorganic particles dispersed in a first solvent and a first binder polymer dissolved in the first solvent; (S2) preparing a binder polymer solution containing a second binder polymer dissolved in a second solvent, and mixing the binder polymer solution with the dispersion so that a combined weight of the inorganic particles and the first binder polymer in the dispersion may be 1.5-8 times of a weight of the second binder polymer in the binder polymer solution; and (S3) applying the resultant mixture to at least one surface of a porous polymer substrate, followed by drying, to form a porous coating layer on the porous polymer substrate. Also, a separator obtained by the method and an electrochemical device including the same.