Sk Innovation Co., Ltd.

Sk Ie Technology Co., Ltd.

Sk Geo Centric Co., Ltd.

Kyu Young Cho

Yun Bong Kim

Su Ji Lee

Won Sub Kwack

Hye Jin Kim

Dong Jin Joo

Jae Woong Kim

Jong Sang Park

Tae Wook Kwon

Heung Taek Bae

Jung Moon Sung

Yong Kyoung Kim

Young Jun Woo

Si Uk Cheon

Dong Man Cho

Min Sang Park

Hye Jin Lee

Dong Yeon Lee

Suji Lee

A separator, a method of manufacturing the separator, and an electrochemical device including the separator. The separator includes: a porous substrate; and an inorganic particle layer formed on at least one surface of the porous substrate, wherein a release rate of the inorganic particle layer is 70% or more when measured by immersing the separator in a water tank at room temperature and then subjecting the separator to sonication under conditions of a frequency of 40 kHz, an output of 1,000 W, and an application time of 60 seconds.

Separator, method of manufacturing separator, and electrochemical device including separator

Provided is a polymer composition for blow molding which includes a high-density polyethylene recovered from a secondary battery separator and has excellent mechanical properties. The polymer composition having excellent processability may be prepared by recycling a secondary battery separator, and may be molded to manufacture an environmental small to medium sized container which has excellent mechanical properties such as flexural strength, elongation, and impact strength in a large temperature range and has excellent processing moldability.

Polymer composition for blow molding including waste separator with inorganic coating and molded article manufactured therefrom

The disclosed technology relates to a mixed recycled polyolefin resin composition comprising a recycled polyolefin resin obtained from a waste separator and a new polyolefin resin, and a recycled product using the same. The mixed recycled polyolefin resin composition comprising a new polyolefin resin and a recycled polyolefin resin from a waste separator based on an embodiment of the disclosed technology has excellent physical and chemical properties.

Mixed recycled polyolefin resin composition comprising recycled polyolefin resin recovered from waste separator and recycled product using the same

Provided is a method of continuously regenerating a separator including inorganic particles. According to an embodiment of the present disclosure, a method of continuously regenerating a separator including inorganic particles including: impregnating a separator of which at least a part of the surface is coated with a coating layer including inorganic particles in a water tank, and then performing a surface polishing treatment to release the coating layer coated on the surface of the separator; and drying the separator from which the coating layer has been released may be provided.

Method of continuously regenerating waste separator including inorganic particles

Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.

Ultra large-width and consecutive coating device and method for manufacturing membrane using the same

The present invention relates to: a porous composite separator for a secondary battery including a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder including a particulate polymer binder and an interpenetrating polymer network (IPN)-type binder having no melting point and having a thermal decomposition temperature of 300&#xb0; C. or higher; and a lithium secondary battery including the same.

Porous composite separator for secondary battery, and lithium secondary battery comprising same

Provided are a separator for a secondary battery and an electrochemical device using the same. More specifically, provided is a composite separator having a more excellent cycle life and including a coating layer which is not easily swollen in an electrolyte solution. In the composite separator for a secondary battery according to an aspect of the present invention, distortion or lifting phenomenon is suppressed even when the heat and pressure are applied without significant decrease in permeability of the separator.

Composite separator including porous substrate, heat-resistant coating layer, and electrode adhesive layer and electrochemical device using the same

Provided are a composite separator and an electrochemical device using the same. More specifically, provided is a composite separator including a coating layer for improving an adhesive property between an electrode and a separator.

Composite separator for secondary battery

The present invention relates to a composite separation membrane for a lithium secondary battery, having an excellent effect of improving the life time and safety of a battery and a lithium secondary battery including the membrane. The composite separation membrane includes a porous base layer; a heat-resistant layer formed on one side or both sides of the porous base layer; and a fusion layer formed on an outermost layer. The heat-resistant layer includes inorganic particles connected and fixed by binder polymers, and the fusion layer includes crystalline polymers in the form of particles having a melting temperature of 100&#xb0; C. or higher.

Composite separation membrane for lithium secondary battery and manufacturing method therefor

Provided are a separator for a lithium secondary battery and a lithium secondary battery comprising the same. The separator for a lithium secondary battery includes: a porous substrate; and a coating layer disposed on one side or both sides of the porous substrate and including a first inorganic particle and a second inorganic particle having different lengths of a major axis, and a binder, wherein a moisture content is less than 800 ppm after being left for 12 hours at a temperature of 40&#xb0; C. and relative humidity of 90%.

Separator for lithium secondary battery, and lithium secondary battery comprising the same

Provided is a separator for a secondary battery including: a porous substrate; and a coating layer formed on the porous substrate, wherein the coating layer includes a plurality of inorganic particles and a binder for binding the plurality of inorganic particles, and the binder includes a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide monomer, and an acrylic monomer having a carboxyl group.

Separator for secondary battery, method for manufacturing the same and lithium secondary battery containing the same

Provided are a composite separator for a secondary battery including: a porous substrate; and a coating layer, formed on the porous substrate, by thermally curing aqueous slurry including inorganic particles, first binder particles, a second binder, and a thermal curing agent, wherein the first binder particles contain a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide-based monomer, an acrylic monomer having a carboxyl group, and an acrylic monomer having a hydroxyl group, and a lithium secondary battery including the same.

Composite separator for secondary battery and lithium secondary battery including the same

Provided are a micro-porous hybrid film and a method for preparing the same, and more particularly, a micro-porous hybrid film capable of improving reliability of a battery by simultaneously improving thermal stability at a high temperature and water properties, and a method for preparing the same. In addition, the present invention relates to a micro-porous hybrid film suitable for a separator of a high capacity/high output lithium secondary battery capable of increasing production stability, long term stability, and performance of the battery by improving adhesive force between a micro-porous film and a coating layer and permeability and minimizing a water content by the coating layer.

Growing community of inventors

Daejeon, South Korea

Kyu Young Cho