Patents by Inventor In-Hyouk Sung
In-Hyouk Sung 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).
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Patent number: 11967731Abstract: A separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate, wherein the porous coating layer comprises boehmite particles and a binder polymer, wherein the binder polymer is positioned on at least a part of the surface of the boehmite particles and connects and fixes the boehmite particles with one another. The boehmite particles have an average particle diameter of 2.0 ?m to 3.5 ?m and a specific surface area of 4.0 m2/g to 4.5 m2/g, and one side of the porous coating layer has a thickness of 2 ?m to 10 ?m.Type: GrantFiled: December 20, 2019Date of Patent: April 23, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: In-Hyouk Sung, Hye-Jin Kwon, Dong-Wook Sung
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Patent number: 11962034Abstract: A separator including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles, core-shell type polymer particles having a core portion and a shell portion surrounding the core portion, and a binder polymer positioned on the whole or a part of the surface of the inorganic particles and core-shell type polymer particles to connect and fix the inorganic particles and core-shell type polymer particles with one another. The core portion has a glass transition temperature, Tg, higher than the shell portion in the core-shell type polymer particles. The ratio of the average diameter of the core-shell type polymer particles to the average diameter of the inorganic particles is 80% to 200%.Type: GrantFiled: November 1, 2019Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung
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Publication number: 20240039123Abstract: A separator including a separator substrate including a porous material and an inorganic layer on at least one surface of the separator substrate. Each of the separator substrate and the inorganic layer has porosity related to permeability of the separator: (10×porosity of separator substrate)?(4×porosity of inorganic layer)?permeability of separator.Type: ApplicationFiled: June 22, 2022Publication date: February 1, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Kyung Ryun KA, In Hyouk SUNG, Ji Su LEE, Dong Wook SUNG
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Publication number: 20230411597Abstract: An electrode for a lithium secondary battery may include an electrode mixture layer and an electrode current collector. The electrode mixture layer may be disposed on at least one of a first surface and a second surface of the electrode current collector. The electrode current collector may include an electrode tab extending from an outer periphery of the electrode mixture layer as a portion other than a portion at which the electrode mixture layer is formed. An adhesive coating portion may be disposed at at least a portion of an upper surface of the electrode tab, at at least a portion of an upper surface of the electrode mixture layer, or at both of the foregoing. The electrode may be coupled to a separator via the adhesive coating portion.Type: ApplicationFiled: October 13, 2022Publication date: December 21, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Ji Su LEE, Kyung Ryun KA, In Hyouk SUNG
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Publication number: 20230402655Abstract: A bipolar all-solid-state battery including a porous support layer is provided. The bipolar all-solid-state battery comprises (a) two or more unit cells each including a positive electrode, a solid electrolyte, and a negative electrode being connected to each other in series and a first porous support layer provided at an interface therebetween; or (b) two or more unit cells each including a positive electrode, a solid electrolyte, and a second porous support layer being connected to each other in series.Type: ApplicationFiled: October 29, 2021Publication date: December 14, 2023Inventors: Jung Pil LEE, Ji Hoon RYU, In Hyouk SUNG, Suk Woo LEE
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Publication number: 20230387547Abstract: A separator including a separator substrate having a porous structure and a coating layer on at least one surface of the separator substrate. The coating layer includes a surface-modified inorganic material, wherein the surface-modified inorganic material includes particles having a core-shell structure wherein a polymer is bonded to a surface of an inorganic particle.Type: ApplicationFiled: September 15, 2022Publication date: November 30, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Ji Su LEE, In Hyouk SUNG, Kyung Ryun KA
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Patent number: 11699831Abstract: 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.Type: GrantFiled: August 23, 2022Date of Patent: July 11, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung, Myeong-Soo Kim, Su-Jin Yoon
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Publication number: 20230122483Abstract: 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.Type: ApplicationFiled: December 20, 2022Publication date: April 20, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Je-An Lee
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Patent number: 11575179Abstract: 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.Type: GrantFiled: August 2, 2019Date of Patent: February 7, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Je-An Lee
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Publication number: 20220416361Abstract: A separator for a secondary battery having a separator substrate and a coating layer formed on the separator substrate. The coating layer is on at least one surface of the separator substrate. The coating layer comprises an acrylate-based binder and an additive. The additive is a fluorine-based non-ionic surfactant, and provides a separator for a secondary battery with significantly improved electrolyte impregnation rate.Type: ApplicationFiled: September 2, 2020Publication date: December 29, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Kyung Ryun KA, Sang Joon LEE, In Hyouk SUNG, Je An LEE
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Publication number: 20220407184Abstract: 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.Type: ApplicationFiled: August 23, 2022Publication date: December 22, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, In-Hyouk SUNG, Myeong-Soo KIM, Su-Jin YOON
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Patent number: 11469476Abstract: 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.Type: GrantFiled: October 18, 2018Date of Patent: October 11, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung, Myeong-Soo Kim, Su-Jin Yoon
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Publication number: 20220285722Abstract: Disclosed is an electrode assembly manufacturing method, in which, in a step of stacking and pressing electrodes and a separator, the pressing is performed in that state in which pores of a porous substrate are filled with a polymer solution. The form or volume of the pores is not changed due to the polymer solution. Consequently, porosity of the separator after manufacture of an electrode assembly is similar to porosity of the separator before stacking. As a result, a battery including the electrode assembly has high ionic conductivity and excellent performance.Type: ApplicationFiled: October 16, 2020Publication date: September 8, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: In Hyouk SUNG, Sang Joon LEE, Kyung Ryun KA
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Patent number: 11424511Abstract: 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.Type: GrantFiled: October 18, 2018Date of Patent: August 23, 2022Assignee: LG Energy Solution, Ltd.Inventors: Chan-Jong Kim, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Sang-Joon Lee
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Patent number: 11349177Abstract: A separator for secondary batteries, including: a separator substrate having at least one surface, wherein the separator substrate includes a polyolefin-based polymer resin having a porous structure and a coating layer is applied to one surface or opposite surfaces of a separator substrate made of a polyolefin-based polymer resin having a porous structure, wherein the coating layer includes a thickener, a filler, a particle-type binder, and a dissolution-type binder, wherein the thickener comprises carboxymethyl cellulose, and wherein an amount of the particle-type binder is greater than an amount of the dissolution-type binder.Type: GrantFiled: December 21, 2018Date of Patent: May 31, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: In Hyouk Sung, Su Jin Yoon, Sang Joon Lee, Hye Jin Kwon
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Publication number: 20210320379Abstract: A separator including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles, core-shell type polymer particles having a core portion and a shell portion surrounding the core portion, and a binder polymer positioned on the whole or a part of the surface of the inorganic particles and core-shell type polymer particles to connect and fix the inorganic particles and core-shell type polymer particles with one another. The core portion has a glass transition temperature, Tg, higher than the shell portion in the core-shell type polymer particles. The ratio of the average diameter of the core-shell type polymer particles to the average diameter of the inorganic particles is 80% to 200%.Type: ApplicationFiled: November 1, 2019Publication date: October 14, 2021Applicant: LG CHEM, LTD.Inventors: Hye-Jin KWON, In-Hyouk SUNG
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Publication number: 20210135316Abstract: A separator for secondary batteries, including: a separator substrate having at least one surface, wherein the separator substrate includes a polyolefin-based polymer resin having a porous structure, and a coating layer is applied to one surface or opposite surfaces of a separator substrate made of a polyolefin-based polymer resin having a porous structure, wherein the coating layer includes a thickener, a filler, a particle-type binder, and a dissolution-type binder, wherein the thickener comprises carboxymethyl cellulose, and wherein an amount of the particle-type binder is greater than an amount of the dissolution-type binder.Type: ApplicationFiled: December 21, 2018Publication date: May 6, 2021Applicant: LG CHEM, LTD.Inventors: In Hyouk SUNG, Su Jin YOON, Sang Joon LEE, Hye Jin KWON
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Publication number: 20210057698Abstract: A separator for an electrochemical device having a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer comprises a dispersing agent a mixture of inorganic particles and a particle-type binder polymer; and a polyvinyl pyrrolidone binder polymer positioned on the whole or a part of the surface of the inorganic particles in the mixture of the porous coating layer to connect and fix the inorganic particles with one another. The content of the polyvinyl pyrrolidone binder polymer is 2 to 20 parts by weight based on 100 parts by weight of the total content of tire particle-type binder polymer and the polyvinyl pyrrolidone binder polymer. The separator has low resistance and a Lami strength equivalent or similar to the Lami strength of conventional separators without surface-treatment of a porous polymer substrate.Type: ApplicationFiled: November 13, 2019Publication date: February 25, 2021Applicant: LG CHEM, LTD.Inventors: In-Hyouk SUNG, Hye-Jin KWON
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Publication number: 20210028428Abstract: A separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate, wherein the porous coating layer comprises boehmite particles and a binder polymer, wherein the binder polymer is positioned on at least a part of the surface of the boehmite particles and connects and fixes the boehmite particles with one another. The boehmite particles have an average particle diameter of 2.0 ?m to 3.5 ?m and a specific surface area of 4.0 m2/g to 4.5 m2/g, and one side of the porous coating layer has a thickness of 2 ?m to 10 ?m.Type: ApplicationFiled: December 20, 2019Publication date: January 28, 2021Applicant: LG CHEM, LTD.Inventors: In-Hyouk SUNG, Hye-Jin KWON, Dong-Wook SUNG
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Publication number: 20200251708Abstract: 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.Type: ApplicationFiled: August 2, 2019Publication date: August 6, 2020Applicant: LG CHEM, LTD.Inventors: Hye-Jin KWON, Myeong-Soo KIM, In-Hyouk SUNG, Su-Jin YOON, Je-An LEE