Patents by Inventor Ko Eun KIM

Ko Eun 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).

  • Patent number: 12651771
    Abstract: Disclosed are an electrolytic solution for lithium secondary batteries capable of improving lifespan characteristics of a lithium secondary battery under a high voltage condition and a lithium secondary battery including the same. The electrolytic solution may includes a lithium salt, a solvent, and a functional additive. In particular, the functional additive includes a high-voltage additive including a first high-voltage additive, e.g., hexafluoroglutaric anhydride, and a second high-voltage additive, e.g., fluoroethylene carbonate.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: June 9, 2026
    Assignees: Hyundai Motor Company, Kia Corporation, The Industry & Academic Cooperation in Chungnam National University (IAC)
    Inventors: Ko Eun Kim, Seung Min Oh, Yoon Sung Lee, Sung Ho Ban, Jun Ki Rhee, Hui Beom Nam, Seung Wan Song, Min Geun Oh, Se Hyun Kwak
  • Patent number: 12633525
    Abstract: Disclosed are a positive electrode additive material for a lithium secondary battery having an enhancement in atmospheric stability, a method for preparing the same, and a positive electrode for a lithium secondary battery including the same. The positive electrode material includes an core including a lithium component, and a coating layer formed on a surface of the core and including a compound having a formula of LiM?O3 wherein M? is Ta or Nb.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 19, 2026
    Assignees: Hyundai Motor Company, Kia Corporation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Chang Hoon Song, Yoon Sung Lee, Sung Ho Ban, Sang Hun Lee, Yong Hoon Kim, Ko Eun Kim, Da Bin Jang, Ha Eun Lee, Hui Beom Nam, Jun Ki Rhee, Seung Min Oh, Sung Min Park, Hyo Bin Lee, Tae Hee Kim, Min Sik Park
  • Patent number: 12580196
    Abstract: Disclosed are, inter alia, a positive electrode slurry containing reduced content of a binder, a method of preparing the positive electrode slurry, a positive electrode made from the slurry and a lithium secondary battery including the positive electrode.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: March 17, 2026
    Assignees: Hyundai Motor Company, Kia Corporation, Daegu Gyeongbuk Institute of Science and Technology
    Inventors: Jun Ki Rhee, Sung Ho Ban, Yoon Sung Lee, Ko Eun Kim, Hyun Tae Lee, Hong Kyung Lee
  • Patent number: 12519135
    Abstract: Disclosed is an additive for an electrolyte solution to improve the electrochemical properties of a lithium secondary battery.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: January 6, 2026
    Assignees: Hyundai Motor Company, Kia Corporation, UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Sang Kyu Kwak, Sung You Hong, Nam Soon Choi, Min Ho Jeon, Hyeong Jun Kim, Hui Beom Nam
  • Patent number: 12438193
    Abstract: Disclosed herein are an electrolyte for a lithium secondary battery, which can enhance lifetime and output characteristics in a high-capacity lithium secondary battery, and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery may include a lithium salt, a solvent, and a functional additive, wherein the functional additive includes 5,5-diallyl-3-(tert-butyldimethylsilyl)oxazolidin-2-one as a positive electrode film additive.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: October 7, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Ko Eun Kim, Sung Ho Ban, Sang Kyu Kwak, Nam Soon Choi, Sung You Hong, Hyeong Jun Kim, Seo Young Jeong, Hyeon Gyu Moon, Min Pyeong Kim
  • Patent number: 12412929
    Abstract: An electrolyte for a lithium secondary battery can enhance lifetime and output characteristics in a high-capacity lithium secondary battery. The electrolyte for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive. The functional additive includes 1-(3-((tert-butyldimethylsilyl)oxy)propyl)-5-(4-fluorophenyl)-1H-1,2,3-triazole-4-carbonitrile as a positive electrode film additive.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: September 9, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Sang Kyu Kwak, Nam Soon Choi, Sung You Hong, Hyeong Jun Kim, Seo Young Jeong, Hyeon Gyu Moon, Min Pyeong Kim
  • Patent number: 12362390
    Abstract: Proposed is an additive for an electrolyte solution to improve the electrochemical properties of a lithium secondary.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: July 15, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Nam Soon Choi, Sang Kyu Kwak, Sung You Hong, Hyeong Jun Kim, Seo Young Jeong, Hyeon Gyu Moon
  • Patent number: 12362389
    Abstract: The present disclosure provides an electrolyte for a lithium secondary battery capable of improving the lifespan characteristics and output characteristics of a high capacity lithium secondary battery and a lithium secondary battery including the same.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: July 15, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Nam Soon Choi, Sung You Hong, Sang Kyu Kwak, Hyeon Gyu Moon, Hyeong Jun Kim, Min Ho Jeon
  • Patent number: 12322756
    Abstract: An additive for an electrolyte solution improves the electrochemical properties of a lithium secondary battery.
    Type: Grant
    Filed: July 21, 2022
    Date of Patent: June 3, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Sung You Hong, Sang Kyu Kwak, Nam Soon Choi, Hyeong Jun Kim, Hui Beom Nam, Min Ho Jeon
  • Patent number: 12183886
    Abstract: Disclosed are an electrolyte solution and an additive thereof, which may improve electrochemical properties of a lithium secondary battery.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: December 31, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, The Industry & Academic Cooperation in Chungnam National University (IAC)
    Inventors: Jun Ki Rhee, Yoon Sung Lee, Sung Ho Ban, Seung Min Oh, Ko Eun Kim, Seung Wan Song, Gyeong Jun Chung
  • Publication number: 20240234735
    Abstract: A conductive composite material, a method of preparing the same, and a secondary battery including the same. The conductive composite material may increase the proportion of an active material when forming an electrode by chemically bonding a conductive material and a binder to each other. A method of preparing the conductive composite material comprises ionizing carbon-based particles in a predetermined polarity, ionizing PTFE particles in a polarity different from that of the carbon-based particles, and chemically bonding the ionized carbon-based particles and the ionized PTFE particles, which are ionized in different polarities, to each other.
    Type: Application
    Filed: September 21, 2023
    Publication date: July 11, 2024
    Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Ko Eun Kim, Yoon Sung Lee, Chang Hoon Song, Hyeong Jun Choi, Jun Myoung Sheem, Jin Kyo Koo, Young Jun Kim
  • Publication number: 20240178450
    Abstract: An embodiment electrolyte solution includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes 4-((tert-butoxydimethylsilyl)methyl)-5-methyl-1,3-dioxol-2-one represented by as an electrode film additive. An embodiment lithium secondary battery includes the above-described electrolyte solution, a positive electrode including a positive electrode active material including Ni, Co, and Mn, a negative electrode including a carbon-based negative electrode active material or a silicon-based negative electrode active material, and a separator interposed between the positive electrode and the negative electrode.
    Type: Application
    Filed: November 8, 2023
    Publication date: May 30, 2024
    Inventors: Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi, Jeong Woo Lee, Sung You Hong
  • Publication number: 20240170724
    Abstract: An embodiment electrolyte solution includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes an electrode film additive of 2-(dodec-1-en-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane represented by An embodiment lithium secondary battery includes this electrolyte solution, a positive electrode including a positive-electrode active material including Ni, Co, and Mn, a negative electrode including a negative-electrode active material including a carbon (C)-based material or a silicon (Si)-based material, and a separator interposed between the positive electrode and the negative electrode.
    Type: Application
    Filed: November 8, 2023
    Publication date: May 23, 2024
    Inventors: Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi, Jeong Woo Lee, Sung You Hong
  • Publication number: 20240170723
    Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a first negative-electrode film additive, which is silver p-toluenesulfonate.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 23, 2024
    Inventors: Ko Eun Kim, Yoon Sung Lee, Sung Ho Ban, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi
  • Publication number: 20240162491
    Abstract: Disclosed are an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, and in particular, the functional additive includes (4-(1H-1,2,4-triazol-1-yl)phenyl)(fluorosulfonyl)sulfamoyl fluoride.
    Type: Application
    Filed: July 27, 2023
    Publication date: May 16, 2024
    Inventors: Hui Beom Nam, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Dong Uk Kim, Seung Min Lee, Min Pyeong Kim, Hyeong Jun Kim, Sang Kyu Kwak, Sung You Hong
  • Publication number: 20240162495
    Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a positive-electrode film additive, which is 3-(4-cyano-5-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)propyl methanesulfonate.
    Type: Application
    Filed: October 26, 2023
    Publication date: May 16, 2024
    Inventors: Ko Eun Kim, Hui Beom Nam, Sung Ho Ban, Yoon Sung Lee, Seung Min Oh, Jun Ki Rhee, Dong Uk Kim, Seung Min Lee, Hyeong Jun Kim, Sung You Hong, Seo Young Jeong, Sang Kyu Kwak
  • Publication number: 20240162492
    Abstract: Disclosed are an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. The electrolyte solution includes a lithium salt, a solvent, and a functional additive. The functional additive includes benzo[d]thiazol-6-yl(fluorosulfonyl)sulfamoyl fluoride.
    Type: Application
    Filed: July 27, 2023
    Publication date: May 16, 2024
    Inventors: Hui Beom Nam, Jun Ki Rhee, Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Dong Uk Kim, Seung Min Lee, Min Pyeong Kim, Hyeong Jun Kim, Sang Kyu Kwak, Sung You Hong
  • Publication number: 20240162493
    Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a first electrode film additive, which is 3-(4-cyano-5-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)propyl 4-methylbenzenesulfonate.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 16, 2024
    Inventors: Ko Eun Kim, Hui Beom Nam, Sung Ho Ban, Yoon Sung Lee, Seung Min Oh, Jun Ki Rhee, Dong Uk Kim, Seung Min Lee, Hyeong Jun Kim, Sung You Hong, Seo Young Jeong, Sang Kyu Kwak
  • Publication number: 20240162494
    Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a negative-electrode film additive, which is silver p-toluenesulfonate.
    Type: Application
    Filed: October 26, 2023
    Publication date: May 16, 2024
    Inventors: Ko Eun Kim, Yoon Sung Lee, Sung Ho Ban, Jun Ki Rhee, Hui Beom Nam, Hyeon Gyu Moon, Nam-Soon Choi
  • Publication number: 20240136531
    Abstract: A conductive composite material, a method of preparing the same, and a secondary battery including the same. The conductive composite material may increase the proportion of an active material when forming an electrode by chemically bonding a conductive material and a binder to each other. A method of preparing the conductive composite material comprises ionizing carbon-based particles in a predetermined polarity, ionizing PTFE particles in a polarity different from that of the carbon-based particles, and chemically bonding the ionized carbon-based particles and the ionized PTFE particles, which are ionized in different polarities, to each other.
    Type: Application
    Filed: September 20, 2023
    Publication date: April 25, 2024
    Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Ko Eun Kim, Yoon Sung Lee, Chang Hoon Song, Hyeong Jun Choi, Jun Myoung Sheem, Jin Kyo Koo, Young Jun Kim