Patents by Inventor Gyoung-A Kim

Gyoung-A 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).

  • Publication number: 20250046782
    Abstract: A binder, an electrode and a lithium secondary battery comprising the same are described, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Taek Gyoung KIM, Joo Hyeong LEE, Kyung Oh KIM, Doo Kyung YANG
  • Patent number: 12212000
    Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a current collector; and a positive electrode active material layer on the current collector, wherein the positive electrode active material layer includes a positive electrode active material and a binder, and the positive electrode active material layer has surface properties defined by the following Sa (arithmetic mean surface roughness of the positive electrode) and Sz (maximum height roughness of the positive electrode) ((i) 1 ?m?Sa?5 ?m, (ii) 10 ?m?Sz?60 ?m (wherein Sa is the average value of the distance from the middle surface of the surface irregularity structure of the positive electrode to the highest point and the lowest point of each irregularity part, and Sz means the distance from the lowest point to the highest point of the positive electrode)) and a method for manufacturing the same.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 28, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Jihoon Ahn, Taek Gyoung Kim
  • Publication number: 20250024844
    Abstract: A cart treatment system according to the present invention includes: a pre-treatment module for cart treatment; an intermediate module provided to receive and treat the cart which is treated in the pre-treatment module; and a post-treatment module provided to receive and treat the cart which is treated in the intermediate module, wherein the intermediate module is provided to be put in either a coupled state in which the pre-treatment module is coupled to the post-treatment module or a detached state in which the pre-treatment module is detached from the post-treatment module.
    Type: Application
    Filed: April 21, 2022
    Publication date: January 23, 2025
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Chun Myung CHOI, Gi Chang LEE, Seung Hoon LEE, Seung Ho LEE, Jae Gyoung KIM
  • Patent number: 12204156
    Abstract: The present disclosure relates to an optical unit including a tubular member, which accommodates a plurality of optical fibers and whose shape is variable to achieve an optimal space factor, to minimizes optical loss or the deterioration of optical properties when the optical cable is bent or compressed or external impact is applied, secure waterproof performance, and minimize an outer diameter, and an optical cable including the same.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: January 21, 2025
    Assignee: LS CABLE & SYSTEM LTD.
    Inventors: Man Su Lee, Tae Gyoung Kim
  • Patent number: 12206103
    Abstract: Disclosed is a modified iron oxyhydroxynitrate including iron oxyhydroxynitrate and hydrogen phosphate ions adsorbed on a surface thereof. Also disclosed is a method for preparing the same, a positive electrode for a lithium secondary battery including the modified iron oxyhydroxynitrate as a positive electrode additive, and a lithium secondary battery including the same.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 21, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Jihoon Ahn, Yun Kyoung Kim, Taek Gyoung Kim, Eun Kyoung Park, Suenghoon Han
  • Publication number: 20250020214
    Abstract: A packing according to the present invention includes: an expansion part inserted into a groove formed in an annular shape on an outer side surface of an installation target and including an expansion space, into which air flows, provided therein; and a sealing part connected to a side surface which faces an outer side of the groove among the side surfaces of the expansion part, and provided to press a pressed target by being pushed to an outside of the groove as the expansion part expands to maintain airtightness of a boundary between the installation target and the pressed target adjacent to the installation target.
    Type: Application
    Filed: April 21, 2022
    Publication date: January 16, 2025
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Chun Myung CHOI, Gi Chang LEE, Jae Gyoung KIM, Seung Ho LEE, Seung Hoon LEE
  • Publication number: 20240373881
    Abstract: The present disclosure provides a cart treatment module including a treatment body; a fixing means; and a rotation means.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 14, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Chun Myung CHOI, Gi Chang LEE, Jae Gyoung KIM, Seung Ho LEE, Seung Hoon LEE
  • Publication number: 20240345355
    Abstract: The present disclosure relates to an optical fiber ribbon that provides a high-capacity communication network, is capable of being rolled in a width direction so as to efficiently use a space in a conduit, minimizes separation between ribbons constituting the optical fiber ribbon or damage to optical fibers during a rolling process, and facilitates overall connection or branching at a connection end.
    Type: Application
    Filed: July 21, 2021
    Publication date: October 17, 2024
    Inventors: Tae Gyoung KIM, Young Chang CHO, Young Ho JUN, Man Su LEE
  • Publication number: 20240332496
    Abstract: A binder, an electrode and a lithium secondary battery comprising the same are described, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.
    Type: Application
    Filed: June 14, 2024
    Publication date: October 3, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Taek Gyoung KIM, Joo Hyeong LEE, Kyung Oh KIM, Doo Kyung YANG
  • Patent number: 12074308
    Abstract: A binder, an electrode and a lithium secondary battery comprising the same, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 27, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Taek Gyoung Kim, Joo Hyeong Lee, Kyung Oh Kim, Doo Kyung Yang
  • Publication number: 20240274829
    Abstract: The present disclosure relates to a carbon nanotube dispersion including carbon nanotubes, a first dispersant having an amide group, a second dispersant having at least one functional group selected from the group consisting of hydroxyl and carboxyl groups, and sulfur. The present disclosure also relates to a method of preparing the dispersion, an electrode slurry composition including the dispersion, an electrode including the electrode slurry composition, and a secondary battery including the electrode.
    Type: Application
    Filed: August 14, 2023
    Publication date: August 15, 2024
    Inventors: Seong Kyun KANG, Kwang Hyun YOO, Taek Gyoung KIM, Jin Yeong LEE
  • Patent number: 12057584
    Abstract: A binder for preparing a positive electrode of a lithium secondary battery, and a method for preparing a positive electrode using the same. The binder includes two or more different lithium-substituted polyacrylic acids with different molecular weights. The lithium-substituted polyacrylic acids include two different lithium-substituted polyacrylic acids differing in weight average molecular weight by 500,000 or more from each other.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: August 6, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Choonghyeon Lee, Doo Kyung Yang, Taek Gyoung Kim, Joo Hyeong Lee
  • Publication number: 20240159981
    Abstract: The present disclosure relates to an optical unit including a tubular member, which accommodates a plurality of optical fibers and whose shape is variable to achieve an optimal space factor, to minimizes optical loss or the deterioration of optical properties when the optical cable is bent or compressed or external impact is applied, secure waterproof performance, and minimize an outer diameter, and an optical cable including the same.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 16, 2024
    Inventors: Man Su LEE, Tae Gyoung KIM
  • Patent number: 11848448
    Abstract: A lithium secondary battery, and more particularly, to a lithium secondary battery having improved performance by minimizing the content of impurities such as sodium in the battery.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 19, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Taek Gyoung Kim, Seung Yoon Yang, Eunji Jang, Doo Kyung Yang
  • Publication number: 20230387414
    Abstract: A slurry composition, and a positive electrode and a lithium secondary battery including the same are provided. The slurry composition includes a positive electrode active material, an electrically conductive material, a binder, a thickener comprising a lithiated carboxymethyl cellulose, an additive comprising a carbodiimide-based compound, and a solvent, and provides an improved processability in a slurry coating process for manufacturing a positive electrode for a lithium secondary battery due to its thixotropy by which sufficient flowability to flexibly respond to changes in slurry coating rate is secured.
    Type: Application
    Filed: July 7, 2022
    Publication date: November 30, 2023
    Inventors: Choonghyeon Lee, Taek Gyoung Kim, Ran Choi
  • Publication number: 20230378472
    Abstract: A slurry composition, and a positive electrode and a lithium secondary battery including the same are provided. The slurry composition includes a positive electrode active material, an electrically conductive material, a binder, a thickener comprising a lithiated carboxymethyl cellulose, an additive comprising a succinimide-based compound, and a solvent, and provides an improved processability in a slurry coating process for manufacturing a positive electrode for a lithium secondary battery, due to its thixotropy by which sufficient flowability to flexibly respond to changes in slurry coating rate is secured.
    Type: Application
    Filed: July 7, 2022
    Publication date: November 23, 2023
    Inventors: Choonghyeon Lee, Taek Gyoung Kim, Ran Choi
  • Publication number: 20230361302
    Abstract: The present disclosure relates to a positive electrode additive for a lithium secondary battery, and a positive electrode active material, a positive electrode and a lithium secondary battery including the same, and in particular, the positive electrode additive represented by Formula 1 is formed on a surface of a carbon material included in the positive electrode active material and is not dissolved in an electrolyte solution, which functions to electrically separate the positive electrode and a negative electrode, and accordingly, battery performance is enhanced by suppressing side reactions in the battery.
    Type: Application
    Filed: January 6, 2022
    Publication date: November 9, 2023
    Inventors: Bong Soo KIM, Taek Gyoung KIM, Kee Yoon LEE, Kangho CHEON, Hee Jung PARK
  • Patent number: 11811049
    Abstract: Disclosed is a carbon-based fiber sheet and a lithium-sulfur battery including the same. The carbon-based fiber sheet for the lithium-sulfur battery is doped with a high concentration of nitrogen and thus plays a role of preventing diffusion by adsorbing lithium polysulfide eluted from a positive electrode during charging and discharging, thereby suppressing a shuttle reaction and thus improving capacity and lifecycle properties of the lithium-sulfur battery.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 7, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Yun Kyoung Kim, Taek Gyoung Kim, Kwonnam Sohn, Doo Kyung Yang, Mira Im
  • Publication number: 20230251321
    Abstract: The present disclosure provides a method for determining the remaining capacity of a lithium-sulfur battery using a voltage drop value obtained by applying a constant current in an open-circuit state and a battery pack implementing the method.
    Type: Application
    Filed: October 20, 2021
    Publication date: August 10, 2023
    Inventors: Bong Soo KIM, Dongseok SHIN, Taek Gyoung KIM
  • Publication number: 20230238531
    Abstract: The present disclosure relates to a lithium secondary battery containing tellurium as an additive for a positive electrode and bis (2,2,2-trifluoroethyl)ether as an additive for an electrolyte solution, which has an effect of improving the lifetime characteristic of the lithium secondary battery.
    Type: Application
    Filed: February 25, 2022
    Publication date: July 27, 2023
    Inventors: Jihoon AHN, Taek Gyoung KIM, Bong Soo KIM