Patents by Inventor Kwan-Woo NAM
Kwan-Woo NAM 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: 11929520Abstract: Disclosed herein is a porous separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the porous separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.Type: GrantFiled: April 17, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kyoung Ho Ahn, Kwan Woo Nam, Chul Haeng Lee, Young Duk Kim, Je An Lee
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Patent number: 11919632Abstract: An air mobility device improves propulsion due to the Coand? effect when flying so as to increase a flying range and reduces noise when flying.Type: GrantFiled: March 23, 2022Date of Patent: March 5, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Youn Sic Nam, Myeong Man Park, Kwan Ho Moh, Keon Woo Kim
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Patent number: 11757155Abstract: Disclosed herein is a separator for secondary batteries, configured to provide insulation between a positive electrode and a negative electrode, wherein the separator comprises no polyolefin substrate, is configured to have a layer structure comprising a fibrous support, inorganic particles, and a binder, and has improved dimensional stability.Type: GrantFiled: August 30, 2019Date of Patent: September 12, 2023Assignee: LG Energy Solution, Ltd.Inventors: Min Ji Kim, Kwan Woo Nam, Seung Hyun Lee, Je An Lee
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Patent number: 11652234Abstract: A separator for an electrochemical device, including: a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate and containing a plurality of microcapsules and a binder polymer positioned on the whole or a part of the surface of the microcapsules to connect and fix the microcapsules with one another, wherein the microcapsules include metal hydroxide particles, and capsule coating layer surrounding each surface of the metal hydroxide particles. An electrochemical device including the separator, and the microcapsules are also provided. The microcapsules and separator show excellent flame resistance and can reduce degradation of battery performance caused by water adsorbability of the plurality of a metal hydroxide particle.Type: GrantFiled: May 14, 2019Date of Patent: May 16, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Seung-Hyun Lee, Da-Kyung Han, Kwan-Woo Nam, Je-An Lee
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Patent number: 11594782Abstract: A flame retardant separator for secondary batteries, and more particularly, a flame retardant separator for secondary batteries comprising or coated with a metal hydroxide having a low Gibbs free energy among polymorphs of a metal hydroxide used as an inorganic flame retardant.Type: GrantFiled: May 8, 2019Date of Patent: February 28, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Da Kyung Han, Kwan Woo Nam, Seung Hyun Lee, Je An Lee
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Publication number: 20230028365Abstract: Disclosed herein are aqueous rechargeable zinc batteries and cathodic materials for preparing the same. The cathodic material of these batteries comprises a redox-active triangular phenanthrenequinone-based macrocycle.Type: ApplicationFiled: December 21, 2020Publication date: January 26, 2023Inventors: James Fraser Stoddart, Kwan Woo Nam, Dongjun Kim
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Patent number: 11398660Abstract: A flame retardant separator for secondary batteries having an asymmetric structure, and more particularly, a flame retardant separator for secondary batteries having an asymmetric structure in which a hydroxide-based inorganic flame retardant is coated on only a surface facing a positive electrode. The present invention provides a separator, which is capable of preventing the risk of lithium ions predominantly precipitated from a negative electrode in a lithium secondary battery, enhancing the flame retardant effect, and maintaining electrochemical properties in contrast with a conventional separator coated with inorganic matters, and a lithium secondary battery including the same.Type: GrantFiled: April 17, 2019Date of Patent: July 26, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Min Ji Kim, Kwan Woo Nam, Je An Lee, Young Bok Kim
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Patent number: 11394084Abstract: A separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a first porous coating layer and a second porous coating layer formed on one surface and the other surface of the porous substrate, respectively, and including a plurality of inorganic particles, a binder polymer disposed on a part or the whole of the surface of the inorganic particles so that the inorganic particles are connected and fixed with each other, and an anionic surfactant, wherein the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are present at a weight ratio of 1:1-1:5.Type: GrantFiled: November 17, 2017Date of Patent: July 19, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kwan-Woo Nam, Min-Ji Gu
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Patent number: 11258135Abstract: A functional binder and a separator including the functional binder, in which the separator includes a porous polyolefin substrate and an organic-inorganic hybrid porous coating layer formed on at least one surface of the substrate and configured to include a mixture of inorganic particles and a binder compound, thus increasing binder-inorganic material adhesion and substrate-binder adhesion while preventing internal shorting from occurring by performing self-healing of damage to the separator, enhancing the adhesion of the separator to a cathode and an anode, and withstanding the dissolution of a transition metal of a cathode material. The binder contains 10 wt % or more of a hydroxyl group per molecule thereof.Type: GrantFiled: January 5, 2018Date of Patent: February 22, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kwan Woo Nam, Su Jin Yoon, Hye Jin Kwon, Chan Jong Kim, Je An Lee
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Publication number: 20210036289Abstract: Disclosed herein is a separator for secondary batteries, configured to provide insulation between a positive electrode and a negative electrode, wherein the separator comprises no polyolefin substrate, is configured to have a layer structure comprising a fibrous support, inorganic particles, and a binder, and has improved dimensional stability.Type: ApplicationFiled: August 30, 2019Publication date: February 4, 2021Applicant: LG CHEM, LTD.Inventors: Min Ji KIM, Kwan Woo NAM, Seung Hyun LEE, Je An LEE
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Publication number: 20210005859Abstract: Disclosed herein is a porous separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the porous separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.Type: ApplicationFiled: April 17, 2019Publication date: January 7, 2021Applicant: LG CHEM, LTD.Inventors: Kyoung Ho AHN, Kwan Woo NAM, Chul Haeng LEE, Young Duk KIM, Je An LEE
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Publication number: 20200358065Abstract: Disclosed herein is a separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.Type: ApplicationFiled: October 31, 2018Publication date: November 12, 2020Applicant: LG CHEM, LTD.Inventors: Min Ji KIM, Kwan Woo NAM, Kyung Ho AHN, Je An LEE, Young Bok KIM, Chul Haeng LEE, Jung Hoon LEE, Sol Ji PARK
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Publication number: 20200350540Abstract: A flame retardant separator for secondary batteries, and more particularly, a flame retardant separator for secondary batteries comprising or coated with a metal hydroxide having a low Gibbs free energy among polymorphs of a metal hydroxide used as an inorganic flame retardant.Type: ApplicationFiled: May 8, 2019Publication date: November 5, 2020Applicant: LG CHEM, LTD.Inventors: Da Kyung HAN, Kwan Woo NAM, Seung Hyun LEE, Je An LEE
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Patent number: 10811661Abstract: A separator including a polyolefin-based separator substrate having a porous structure, a first coating portion including a mixture of inorganic particles and a binder polymer, and a second coating portion including a material that reduces generation of hydrofluoric acid, wherein the first coating portion and the second coating portion are located on the separator substrate, are located in pores in the separator substrate, or are located on the separator substrate and in pores in the separator substrate.Type: GrantFiled: July 24, 2018Date of Patent: October 20, 2020Assignee: LG CHEM, LTD.Inventors: Min Ji Kim, Min Ji Gu, Kwan Woo Nam, Min Hyung Kim, Je An Lee
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Patent number: 10804519Abstract: Disclosed are a separator and an electrochemical device including the same.Type: GrantFiled: August 9, 2017Date of Patent: October 13, 2020Assignee: LG CHEM, LTD.Inventors: Su-Jin Yoon, Hye-Jin Kwon, Min-Ji Kim, Chan-Jong Kim, Kwan-Woo Nam
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Publication number: 20200287187Abstract: A method for improving physical properties of a separator in which is capable of increasing insulation, tensile strength and elongation. The separator also has improved physical properties through the above method. Particularly, the present invention is applied to a separator that has already manufactured. After forming a double bond in the separator that has already manufactured, crosslinking may be formed through the double bond or by adding a separate crosslinking initiator.Type: ApplicationFiled: April 13, 2019Publication date: September 10, 2020Applicant: LG CHEM, LTD.Inventors: Young Bok KIM, Min Ji KIM, Kwan Woo NAM, Je An LEE
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Publication number: 20200274128Abstract: A flame retardant separator for secondary batteries having an asymmetric structure, and more particularly, a flame retardant separator for secondary batteries having an asymmetric structure in which a hydroxide-based inorganic flame retardant is coated on only a surface facing a positive electrode. The present invention provides a separator, which is capable of preventing the risk of lithium ions predominantly precipitated from a negative electrode in a lithium secondary battery, enhancing the flame retardant effect, and maintaining electrochemical properties in contrast with a conventional separator coated with inorganic matters, and a lithium secondary battery including the same.Type: ApplicationFiled: April 17, 2019Publication date: August 27, 2020Applicant: LG CHEM, LTD.Inventors: Min Ji KIM, Kwan Woo NAM, Je An LEE, Young Bok KIM
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Publication number: 20200168877Abstract: A separator for an electrochemical device, including: a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate and containing a plurality of microcapsules and a binder polymer positioned on the whole or a part of the surface of the microcapsules to connect and fix the microcapsules with one another, wherein the microcapsules include metal hydroxide particles, and capsule coating layer surrounding each surface of the metal hydroxide particles. An electrochemical device including the separator, and the microcapsules are also provided. The microcapsules and separator show excellent flame resistance and can reduce degradation of battery performance caused by water adsorbability of the plurality of a metal hydroxide particle.Type: ApplicationFiled: May 14, 2019Publication date: May 28, 2020Applicant: LG CHEM, LTD.Inventors: Seung-Hyun LEE, Da-Kyung HAN, Kwan-Woo NAM, Je-An LEE
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Publication number: 20200020910Abstract: A separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a first porous coating layer and a second porous coating layer formed on one surface and the other surface of the porous substrate, respectively, and including a plurality of inorganic particles, a binder polymer disposed on a part or the whole of the surface of the inorganic particles so that the inorganic particles are connected and fixed with each other, and an anionic surfactant, wherein the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are present at a weight ratio of 1:1-1:5.Type: ApplicationFiled: November 17, 2017Publication date: January 16, 2020Applicant: LG CHEM, LTD.Inventors: Kwan-Woo NAM, Min-Ji GU
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Publication number: 20190355953Abstract: A functional binder and a separator including the functional binder, in which the separator includes a porous polyolefin substrate and an organic-inorganic hybrid porous coating layer formed on at least one surface of the substrate and configured to include a mixture of inorganic particles and a binder compound, thus increasing binder-inorganic material adhesion and substrate-binder adhesion while preventing internal shorting from occurring by performing self-healing of damage to the separator, enhancing the adhesion of the separator to a cathode and an anode, and withstanding the dissolution of a transition metal of a cathode material. The binder contains 10 wt % or more of a hydroxyl group per molecule thereof.Type: ApplicationFiled: January 5, 2018Publication date: November 21, 2019Applicant: LG CHEM, LTD.Inventors: Kwan Woo NAM, Su Jin YOON, Hye Jin KWON, Chan Jong KIM, Je An LEE