Patents by Inventor Won-Sub KWACK

Won-Sub KWACK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250105461
    Abstract: Separators and lithium secondary batteries including the separators that can exhibit excellent high-temperature storage stability and capacity retention rate of a lithium secondary battery, a low resistance increase rate, and significantly decreased gas emission are disclosed. In an example embodiment, a separator includes: a porous substrate and a coating layer formed on one or both surfaces of the porous substrate, wherein the coating layer includes a water-soluble crosslinked polyacrylamide-based binder and barium sulfate.
    Type: Application
    Filed: July 18, 2024
    Publication date: March 27, 2025
    Inventors: Tae Wook KWON, Won Sub KWACK, Kyu Young CHO
  • Publication number: 20250105462
    Abstract: Separators and lithium secondary batteries including the separators that can exhibit excellent high-temperature storage stability and capacity retention rate of a lithium secondary battery, a low resistance increase rate, and significantly decreased gas emission are disclosed. In an example embodiment, a separator includes: a porous substrate and a coating layer formed on one or both surfaces of the porous substrate, wherein the coating layer includes a water-soluble composite binder including polyethyleneimine and a nitrogen-containing water-soluble polymer, and inorganic particles.
    Type: Application
    Filed: July 18, 2024
    Publication date: March 27, 2025
    Inventors: Tae Wook KWON, Won Sub KWACK, Kyu Young CHO
  • Publication number: 20250096418
    Abstract: Provided are a separator and an electrochemical device including the same. According to an embodiment of the present disclosure, a separator is provided which includes a porous substrate; and an inorganic particle layer which is placed on one or both surfaces of the porous substrate and includes inorganic particles and an inorganic binder, wherein the inorganic particle layer includes an organic compound having a lower content than the inorganic binder and the inorganic binder includes a metal silicate.
    Type: Application
    Filed: September 9, 2024
    Publication date: March 20, 2025
    Inventors: Won Sub KWACK, Sang Hoon KIM, Heung Taek BAE, Ji Sook LIM
  • Publication number: 20240421429
    Abstract: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, ?P is 1.1 or more may be provided.
    Type: Application
    Filed: August 26, 2024
    Publication date: December 19, 2024
    Inventors: Heung Taek BAE, Chang Hee LEE, Won Sub KWACK, Tae Wook KWON
  • Publication number: 20240396165
    Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator with the separator including: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound.
    Type: Application
    Filed: July 31, 2024
    Publication date: November 28, 2024
    Inventors: Chang Hee LEE, Won Sub KWACK, Tae Wook KWON, Heung Taek BAE
  • Publication number: 20240396166
    Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator with the separator including: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound.
    Type: Application
    Filed: July 31, 2024
    Publication date: November 28, 2024
    Inventors: Chang Hee LEE, Won Sub KWACK, Tae Wook KWON, Heung Taek BAE
  • Patent number: 12126046
    Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator with the separator including: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: October 22, 2024
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Chang Hee Lee, Won Sub Kwack, Tae Wook Kwon, Heung Taek Bae
  • Patent number: 12113239
    Abstract: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, ?P is 1.1 or more may be provided.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: October 8, 2024
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Heung Taek Bae, Chang Hee Lee, Won Sub Kwack, Tae Wook Kwon
  • Patent number: 11969693
    Abstract: 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.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 30, 2024
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Dong Jin Joo, Kyu Young Cho, Yun Bong Kim, Su Ji Lee, Won Sub Kwack, Hye Jin Kim
  • Publication number: 20240106073
    Abstract: Provided are a separator coating composition for a secondary battery including inorganic particles and a silane salt compound having a specific structure, a separator using the same, and an electrochemical device including the same. Specifically, a separator coating composition for a secondary battery which implements adhesion between an inorganic material layer and a porous substrate without including an acid/polymer-based organic binder in a coating composition for forming the inorganic material layer on one or both surfaces of the porous substrate and does not need a separate dispersing agent for dispersing the inorganic particles, a separator manufactured using the same, and an electrochemical device including the separator are provided.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 28, 2024
    Inventors: Tae Wook KWON, Sang Ick LEE, Won Sub KWACK, Cheol Woo KIM, Hyo Shin KWAK, Heung Taek BAE
  • Publication number: 20240021955
    Abstract: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. An embodiment of the present invention may provide a separator including: a porous substrate; an inorganic particle layer provided on at least one surface of the porous substrate; and a heat fusion layer provided on at least one surface of the inorganic particle layer, wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 18, 2024
    Inventors: Won Sub KWACK, Tae Wook KWON, Heung Taek BAE, Chang Hee LEE
  • Publication number: 20230402716
    Abstract: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, ?P is 1.1 or more may be provided.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Heung Taek BAE, Chang Hee LEE, Won Sub KWACK, Tae Wook KWON
  • Publication number: 20230402712
    Abstract: A separator for a secondary battery, a method of manufacturing the separator, and a secondary battery including the separator, where these separator includes: a porous substrate and an inorganic particle layer formed on at least one surface of the porous substrate, wherein a heat shrinkage rate S of the separator is 8% or less may be provided.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Tae Wook KWON, Won Sub KWACK, Heung Taek BAE, Chang Hee LEE
  • Publication number: 20230402715
    Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator with the separator including: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Chang Hee LEE, Won Sub KWACK, Tae Wook KWON, Heung Taek BAE
  • Patent number: 11843125
    Abstract: 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° C. or higher; and a lithium secondary battery including the same.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: December 12, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Hye Jin Kim, Yun Bong Kim, Suji Lee, Won Sub Kwack, Kyu Young Cho
  • Patent number: 11811090
    Abstract: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. An embodiment of the present invention may provide a separator including: a porous substrate; an inorganic particle layer provided on at least one surface of the porous substrate; and a heat fusion layer provided on at least one surface of the inorganic particle layer, wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: November 7, 2023
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Won Sub Kwack, Tae Wook Kwon, Heung Taek Bae, Chang Hee Lee
  • Publication number: 20220328931
    Abstract: Provided are a separator for a secondary battery, a method for manufacturing the same, and a lithium secondary battery including the same, and particularly, a separator for a secondary battery which has sufficient thermal resistance and mechanical properties even without using a polymer-based organic binder lacking chemical stability, by adopting a metal alkanoate having a polar group as a binder for binding among particles forming a porous active layer and also between the porous active layer and a porous substrate. A method for manufacturing the same, and a lithium secondary battery including the same are also provided.
    Type: Application
    Filed: April 5, 2022
    Publication date: October 13, 2022
    Inventors: Won Sub Kwack, Sang Ick Lee, Tae Wook Kwon, Yun Bong Kim, Heung Taek Bae, Sang Yoon Ji
  • Patent number: 11322800
    Abstract: 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.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: May 3, 2022
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Won Sub Kwack, Min Sang Park, Yun Bong Kim, Dong Yeon Lee, Kyu Young Cho
  • Patent number: 11183736
    Abstract: 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.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: November 23, 2021
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Kyu Young Cho, Won Sub Kwack, Yun Bong Kim, Hye Jin Kim, Su Ji Lee
  • Patent number: 11139542
    Abstract: A separator for a secondary cell includes a porous polymer substrate having a first surface, a second surface opposing the first surface, and a plurality of pores connecting the first surface to the second surface; and heat-resistant coating layers formed on at least one of the first surface and the second surface of the porous polymer substrate and on internal surfaces of the pores using an atomic layer deposition process (ALD). Pores having a non-coated region are present in the internal surfaces of the pores.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: October 5, 2021
    Assignees: SK Innovation Co., Ltd., SK IE TECHNOLOGY CO., LTD.
    Inventors: Hye Jin Kim, Won Sub Kwack, Min Sang Park