Patents by Inventor Ju-Ri Kim
Ju-Ri Kim 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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Publication number: 20240093399Abstract: Provided is a method for electrowinning neodymium compound. The method includes providing a fluoride-based electrolyte through an opening defined in an electrolytic bath including a cathode and an anode. The method includes providing granules, each including a neodymium compound and having at least one cavity defined therein, through the opening defined in the electrolytic bath. The method includes dissolving at least a portion of the granule in a molten salt of the fluoride-based electrolyte. The method also includes reducing neodymium at the cathode. The cavity is defined inside or on the surface of the granule, and the apparent density of the granules is lower than the density of the molten salt. The method proposed has an improved process compared to those of the related art.Type: ApplicationFiled: September 6, 2022Publication date: March 21, 2024Inventors: Hong Youl RYU, Hwa Young WOO, Vladislav RI, Ju Hwan SONG, Jeong Mo KIM
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Patent number: 11876229Abstract: Disclosed is a negative electrode including: a current collector; a negative electrode active material layer disposed on at least one surface of the current collector, including a silicon-based active material and a conductive material, and containing no binder polymer; and a coating layer disposed on the surface of the negative electrode active material layer and in at least a part of the inside of the pores of the negative electrode active material layer, and containing a coating layer polymer forming a chemical bond with silicon (Si) of the silicon-based active material, wherein the content of the coating layer polymer is 0.3-2 parts by weight based on 100 parts by weight of the negative electrode active material layer, and the coating layer polymer is a mixture of polyacrylic acid with polyvinyl alcohol.Type: GrantFiled: January 28, 2020Date of Patent: January 16, 2024Assignee: LG Energy Solution, Ltd.Inventors: Ji-Won Min, Seok-Koo Kim, Joon Kwon, Sun-Kyu Kim, Ju-Ri Kim, Kyung-Eun Sun
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Publication number: 20230291017Abstract: A flexible printed circuit board for pouch cell internal pressure measurement includes a sensing part on which a pressure sensor is mounted; a board part provided with connector pins connected to a plurality of conductor lines, respectively; and an extension part extending from the sensing part to the board part. The extension part includes a protective sheath of a metal material that surrounds an outer surface of an insulating film in a predetermined section.Type: ApplicationFiled: December 14, 2021Publication date: September 14, 2023Applicant: LG Energy Solution, Ltd.Inventors: Ki-Young Lee, Dong-Wan Ko, Do-Yul Kim, Ju-Ri Kim
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Patent number: 11658285Abstract: A method of manufacturing a negative electrode for a secondary battery includes a first step of preparing a lithium metal sheet coated with a lithium metal or to which the lithium metal is adhered in a form of a thin film on a release film and wound into a roll, a second step of laminating the lithium metal sheet to allow the lithium metal to be adjacent to a negative electrode material mixture, to thereby manufacture a negative electrode in which lithium metal is laminated and a third step of applying pressure to the negative electrode. The release film is coated with silicon. The negative electrode manufacturing method uniformly laminates or bonds lithium metal which is difficult to handle on the negative electrode material mixture of the secondary battery and advantageously enhances the speed of the pre-lithiation by using the patterned lithium metal.Type: GrantFiled: April 5, 2019Date of Patent: May 23, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ju Ri Kim, In Chul Kim, Joo Yong Song, Seok Koo Kim
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Publication number: 20230078943Abstract: A negative electrode, a method for manufacturing the negative electrode, a secondary battery, and a method for manufacturing the secondary battery, wherein the negative electrode includes a negative electrode current collector, and a negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material layer on at least one surface of the negative electrode current collector and a second negative electrode active material layer on the first negative electrode active material layer. The first negative electrode active material layer includes ethylene carbonate.Type: ApplicationFiled: May 3, 2021Publication date: March 16, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Ji Hoon RYU, Ju Ri KIM, Hyun Min KIM
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Patent number: 11424474Abstract: The present invention relates to an apparatus for manufacturing a secondary battery, the apparatus comprising a radical unit sheet supply part that supplies a semi-finished radical unit sheet on which a first electrode sheet is laminated on an outermost portion thereof, a film sheet supply part that supplies a film sheet coated with a stabilized lithium metal power (SLMP) layer to attach the film sheet to each of top and bottom surfaces of the semi-finished radical unit sheet, a film sheet pressing part that allows the SLMP layer applied to the film sheet to be bonded to each of the top and bottom surfaces of the semi-finished radical unit sheet, and a film sheet removing part that removes the film sheet from the SLMP layer bonded to the semi-finished radical unit sheet to manufacture a finished radical unit sheet.Type: GrantFiled: February 28, 2018Date of Patent: August 23, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: In Chul Kim, Seok Koo Kim, Ju Ri Kim, Jooyong Song
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Publication number: 20220255059Abstract: The technology relates to a negative electrode for a secondary battery, and a secondary battery including same. The negative electrode comprises a composite material layer having a double-layer structure, but includes silicon oxide and carbon nanotubes in only one layer, such that it is possible to increase the capacity of a battery while preventing structural deterioration of the negative electrode due to changes in electrode volume during charging and discharging.Type: ApplicationFiled: January 25, 2021Publication date: August 11, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Ki Won SUNG, Eun Ju LEE, Ju Ri KIM
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Publication number: 20220052345Abstract: Disclosed is a negative electrode including: a current collector; a negative electrode active material layer disposed on at least one surface of the current collector, including a silicon-based active material and a conductive material, and containing no binder polymer; and a coating layer disposed on the surface of the negative electrode active material layer and in at least a part of the inside of the pores of the negative electrode active material layer, and containing a coating layer polymer forming a chemical bond with silicon (Si) of the silicon-based active material, wherein the content of the coating layer polymer is 0.3-2 parts by weight based on 100 parts by weight of the negative electrode active material layer, and the coating layer polymer is a mixture of polyacrylic acid with polyvinyl alcohol.Type: ApplicationFiled: January 28, 2020Publication date: February 17, 2022Applicant: LG CHEM, LTD.Inventors: Ji-Won MIN, Seok-Koo KIM, Joon KWON, Sun-Kyu KIM, Ju-Ri KIM, Kyung-Eun SUN
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Publication number: 20210242457Abstract: A negative electrode for a lithium secondary battery including a current collector; a negative electrode mixture layer disposed on at least one surface of the current collector; a lithium diffusion rate-controlling layer formed on a surface of the negative electrode mixture layer by atomic layer deposition opposite the current collector; and a lithium layer disposed on a surface of the lithium diffusion rate-controlling layer opposite the negative electrode mixture layer. A method for prelithiating the negative electrode for a lithium secondary battery and a method for manufacturing a lithium secondary battery comprising the negative electrode. The negative electrode includes a lithium diffusion rate-controlling layer between a lithium thin film and a negative electrode mixture layer, and thereby can control the lithium diffusion rate during a prelithiation process and inhibit lithium loss or side reactions of lithium, thus enhancing cycle characteristics.Type: ApplicationFiled: September 26, 2019Publication date: August 5, 2021Applicant: LG CHEM, LTD.Inventors: Yeon Suk HONG, Ju Ri KIM
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Publication number: 20210234160Abstract: The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and forming a coating layer including a lithium-based alloy on the positive electrode material mixture layer, or forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector.Type: ApplicationFiled: September 6, 2019Publication date: July 29, 2021Applicants: LG Chem, Ltd., UNIST (Ulsan National Institute of Science and Technology)Inventors: Ju Ri Kim, Seok Koo Kim, Sun Kyu Kim, Young Sik Kim, Jooyong Song, Hyun Woo Kim, Young Jun Lim
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Patent number: 10910637Abstract: Provided are a positive electrode and a lithium secondary battery which have high energy capacity and include a nickel-containing positive electrode active material, and an additive including metal particles and lithium oxide.Type: GrantFiled: June 27, 2018Date of Patent: February 2, 2021Inventors: Jooyong Song, Seok Koo Kim, In Chul Kim, Ju Ri Kim, Myung Ki Lee
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Patent number: 10811687Abstract: The present invention relates to a secondary battery electrode including: a collector positioned between an external wire and an electrode active material to transfer electrons; and an electrode mixture layer coated on the collector, wherein the electrode mixture layer includes a cross-linked polymer, an electrode active material, and a binder, and the cross-linked polymer is formed by a cross-linked bond between a first polymerization unit and a second polymerization unit to have an interpenetrating polymer network (IPN), and a manufacturing method thereof.Type: GrantFiled: November 23, 2016Date of Patent: October 20, 2020Assignee: LG Chem, Ltd.Inventors: Hyun Min Kim, Hee Seok Jeong, Ju Ri Kim, Sei Woon Oh
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Patent number: 10784490Abstract: The present invention provides a battery cell including: an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator are laminated, each of the positive electrode and the negative electrode having 2×n (n?2), wherein a positive tab is provided in each of odd-numbered sides, and a negative electrode tab is provided in each of even-numbered sides, and the positive electrodes and the negative electrode tabs are alternately formed along the sides; electrode terminals respectively disposed on a first side and a second side of the electrode assembly, in which outermost electrodes are disposed, or third sides which are side surfaces of the electrode assembly, being perpendicular to the first side and the second side, and a battery case having a structure of surrounding an external surface of the electrode assembly.Type: GrantFiled: October 13, 2016Date of Patent: September 22, 2020Assignee: LG Chem, Ltd.Inventors: Hee Seok Jeong, Hyun Min Kim, Ju Ri Kim, Sei Woon Oh
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Publication number: 20200227729Abstract: Provided are a positive electrode and a lithium secondary battery which have high energy capacity and include a nickel-containing positive electrode active material, and an additive including metal particles and lithium oxide.Type: ApplicationFiled: June 27, 2018Publication date: July 16, 2020Applicant: LG Chem, Ltd.Inventors: Jooyong Song, Seok Koo Kim, In Chul Kim, Ju Ri Kim, Myung Ki Lee
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Publication number: 20200083555Abstract: The present invention relates to an apparatus for manufacturing a secondary battery, the apparatus comprising a radical unit sheet supply part that supplies a semi-finished radical unit sheet on which a first electrode sheet is laminated on an outermost portion thereof, a film sheet supply part that supplies a film sheet coated with a stabilized lithium metal power (SLMP) layer to attach the film sheet to each of top and bottom surfaces of the semi-finished radical unit sheet, a film sheet pressing part that allows the SLMP layer applied to the film sheet to be bonded to each of the top and bottom surfaces of the semi-finished radical unit sheet, and a film sheet removing part that removes the film sheet from the SLMP layer bonded to the semi-finished radical unit sheet to manufacture a finished radical unit sheet.Type: ApplicationFiled: February 28, 2018Publication date: March 12, 2020Inventors: In Chul Kim, Seok Koo Kim, Ju Ri Kim, Jooyong Song
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Publication number: 20190237750Abstract: A method of manufacturing a negative electrode for a secondary battery includes a first step of preparing a lithium metal sheet coated with a lithium metal or to which the lithium metal is adhered in a form of a thin film on a release film and wound into a roll, a second step of laminating the lithium metal sheet to allow the lithium metal to be adjacent to a negative electrode material mixture, to thereby manufacture a negative electrode in which lithium metal is laminated and a third step of applying pressure to the negative electrode. The release film is coated with silicon. The negative electrode manufacturing method uniformly laminates or bonds lithium metal which is difficult to handle on the negative electrode material mixture of the secondary battery and advantageously enhances the speed of the pre-lithiation by using the patterned lithium metal.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Applicant: LG CHEM, LTD.Inventors: Ju Ri KIM, In Chul KIM, Joo Yong SONG, Seok Koo KIM
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Publication number: 20180261844Abstract: The present invention relates to a secondary battery electrode including: a collector positioned between an external wire and an electrode active material to transfer electrons; and an electrode mixture layer coated on the collector, wherein the electrode mixture layer includes a cross-linked polymer, an electrode active material, and a binder, and the cross-linked polymer is formed by a cross-linked bond between a first polymerization unit and a second polymerization unit to have an interpenetrating polymer network (IPN), and a manufacturing method thereof.Type: ApplicationFiled: November 23, 2016Publication date: September 13, 2018Applicant: LG Chem, Ltd.Inventors: Hyun Min Kim, Hee Seok Jeong, Ju Ri Kim, Sei Woon Oh
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Publication number: 20180254467Abstract: The present invention provides a battery cell including: an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator are laminated, each of the positive electrode and the negative electrode having 2×n (n?2), wherein a positive tab is provided in each of odd-numbered sides, and a negative electrode tab is provided in each of even-numbered sides, and the positive electrodes and the negative electrode tabs are alternately formed along the sides; electrode terminals respectively disposed on a first side and a second side of the electrode assembly, in which outermost electrodes are disposed, or third sides which are side surfaces of the electrode assembly, being perpendicular to the first side and the second side, and a battery case having a structure of surrounding an external surface of the electrode assembly.Type: ApplicationFiled: October 13, 2016Publication date: September 6, 2018Applicant: LG Chem, Ltd.Inventors: Hee Seok Jeong, Hyun Min Kim, Ju Ri Kim, Sei Woon Oh
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Publication number: 20180006291Abstract: Disclosed herein are a multilayer electrode and a lithium secondary battery including the same. The multilayer electrode includes an electrode current collector for transmitting electrons between an external wire and an electrode active material and three or more electrode mixture layers sequentially applied to the electrode current collector, wherein each of the electrode mixture layers includes an electrode active material and a conducting agent, and wherein the content of the conducting agent of one of adjacent electrode mixture layers that is relatively close to the current collector in the direction in which the electrode mixture layers are formed is higher than that of the conducting agent of the other of the adjacent electrode mixture layers that is relatively distant from the current collector.Type: ApplicationFiled: January 7, 2016Publication date: January 4, 2018Applicant: LG Chem, Ltd.Inventors: Kyoung Ho Kim, Seok Koo Kim, Ju Ri Kim, Jooyong Song, Hye Youn Lee
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Patent number: 7598139Abstract: A device is described comprising a substrate of a first conductivity type having a first dopant concentration, a first well formed in the substrate, a second well of the first conductivity type formed in the substrate and being deeper than the first well, the second well having a higher dopant concentration than the first dopant concentration, and a nonvolatile memory cell formed on the second well. A device is described comprising four wells of various conductivity types with a nonvolatile memory cell formed on the second well. A device is described comprising a plurality of wells for isolating transistors of a plurality of voltage ranges, wherein each one of the plurality of wells contains at least one transistor of a particular voltage range, and wherein transistors of only one of the plurality of voltage ranges are within each of the plurality of wells.Type: GrantFiled: September 4, 2007Date of Patent: October 6, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Weon-Ho Park, Sang-Soo Kim, Hyun-Khe Yoo, Sung-Chul Park, Byoung-Ho Kim, Ju-Ri Kim, Seung-Beom Yoon, Jeong-Uk Han