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: 11962001
    Abstract: Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide. The positive electrode active material is coated with the molybdenum oxide to form a coating layer on a surface thereof.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: April 16, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, Industry Academy Cooperation Foundation of Sejong University
    Inventors: Seung Min Oh, Jun Ki Rhee, Yoon Sung Lee, Ji Eun Lee, Sung Ho Ban, Ko Eun Kim, Woo Young Jin, Sang Mok Park, Sang Hun Lee, Seung Taek Myung, Hee Jae Kim, Min Young Shin
  • Publication number: 20240120477
    Abstract: A positive electrode material for a lithium secondary battery has improved electron conductivity and surface stability because oxidation-treated carbon nanotubes are stably attached to the surface of an active material. According to one embodiment the positive electrode material includes a positive electrode active material core made of a Li—Ni—Co—Mn-M-O-based material (M=transition metal) and an oxidized carbon nanotube coating layer formed on the surface of the positive electrode active material core and including 1% to 3% by weight of oxidation-treated carbon nanotubes (OCNT) relative to 100% by weight of the positive electrode active material core.
    Type: Application
    Filed: July 7, 2023
    Publication date: April 11, 2024
    Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Chang Hoon Song, Yoon Sung Lee, Ko Eun Kim, Van Chuong Ho, Jun Young Mun
  • Publication number: 20240105918
    Abstract: A positive electrode material for a lithium secondary battery and a manufacturing method therefor are provided. The positive electrode material may have carbon nanotubes stably attached to a surface of an active material and may exhibit increased electron conductivity and improved surface stability. The positive electrode material for a lithium secondary battery may comprises: a positive electrode active material core comprising a Li—Ni—Co—Mn-M-O-based material, where M is a transition metal; and a carbon nanotube coating layer on a surface of the positive electrode active material core. Carbon nanotubes (CNT) may be in an amount of 1-5 wt %, based on 100 wt % of the positive electrode active material core.
    Type: Application
    Filed: July 3, 2023
    Publication date: March 28, 2024
    Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Chang Hoon Song, Yoon Sung Lee, Ko Eun Kim, Van Chuong Ho, Jun Young Mun
  • Publication number: 20240055582
    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: Application
    Filed: April 20, 2023
    Publication date: February 15, 2024
    Applicants: 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
  • Publication number: 20230402650
    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: Application
    Filed: November 18, 2022
    Publication date: December 14, 2023
    Applicants: 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
  • Publication number: 20230402649
    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: Application
    Filed: November 17, 2022
    Publication date: December 14, 2023
    Applicants: 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: 11830979
    Abstract: The electrolyte for a lithium secondary battery comprises: a lithium salt; a solvent; and a functional additive, wherein the functional additive comprises naphthalen-1-yl sulfurofluoridate, represented by the following formula 1:
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: November 28, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Ik Kyu Kim, Seung Min Oh, Sung Ho Ban, Sang Mok Park, Ko Eun Kim, Sang Kyu Kwak, Nam Soon Choi, Hyeon Gyu Moon, Seo Young Jeong, Sung You Hong, Dae Yeon Hwang
  • Patent number: 11769880
    Abstract: A method of mixing a cathode active material in a process of manufacturing a cathode of a lithium secondary battery is provided. The method includes a preparation step of preparing a lithium compound removal solution in which PAA (polyacrylic acid) is mixed with a solvent, a removal step of reacting the lithium compound removal solution with the cathode active material, on a surface of which a lithium compound is present, thus removing the lithium compound present on the surface of the cathode active material, and a mixing step of mixing the cathode active material, which is mixed with the lithium compound removal solution, with a conductive material and a binder.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: September 26, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Sang Mok Park, Seung Min Oh, Woo Young Jin, Ji Eun Lee, Sang Hun Lee, Ko Eun Kim, Jun Ki Rhee, Yoon Sung Lee
  • Patent number: 11764404
    Abstract: The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes: at least one high-voltage additive selected from a group consisting of lithium bis(phthalato)borate, represented by the following formula 1; hexafluoroglutaric anhydride, represented by the following formula 2; and phosphoric acid tris(2,2,2-trifluoroethyl)ester, represented by the following formula 3:
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: September 19, 2023
    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, Jun Ki Rhee, Sung Ho Ban, Seung Wan Song, Gyeong Jun Chung
  • Publication number: 20230291012
    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 includes a lithium salt, a solvent, and a functional additive, and the functional additive includes a high-voltage additive including a first high-voltage additive, perfluoro-15-crown-5-ether, represented by [Formula 1] and a second high-voltage additive, fluoroethylene carbonate, represented by [Formula 2].
    Type: Application
    Filed: November 7, 2022
    Publication date: September 14, 2023
    Inventors: Ko Eun Kim, Seung Min Oh, Yoon Sung Lee, Hui Beom Nam, Jun Ki Rhee, Sung Ho Ban, Seung Wan Song, Min Geun Oh
  • Publication number: 20230291011
    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: Application
    Filed: October 27, 2022
    Publication date: September 14, 2023
    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: 11749838
    Abstract: Disclosed are an electrolyte solution for lithium secondary batteries and a lithium secondary battery including the same.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: September 5, 2023
    Assignees: Hyundai Motor Company, Kia Corporation, UNIST (Ulsan National Insitute of Science and Technology)
    Inventors: Ko Eun Kim, Sung Ho Ban, Yoon Sung Lee, Seung Min Oh, Ik Kyu Kim, Sang Kyu Kwak, Nam Soon Choi, Sung You Hong, Woo Gyum Kim, Dae Yeon Hwang, Hyeon Gyu Moon
  • Patent number: 11742521
    Abstract: The electrolyte solution for a lithium secondary battery includes: a lithium salt; a solvent; and an anode additive including 5-(4-cyanophenyl)-1-(4-fluorobenzyl)-1H-1,2,3-triazole-4-carbonitrile represented by Chemical Formula 1 below:
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: August 29, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Seung Min Oh, Sung Ho Ban, Ko Eun Kim, Jun Ki Rhee, Woo Young Jin, Sang Kyu Kwak, Nam Soon Choi, Sung You Hong, Woo Gyum Kim, Dae Yeon Hwang, Hyeon Gyu Moon
  • Publication number: 20230207874
    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: Application
    Filed: July 19, 2022
    Publication date: June 29, 2023
    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
  • Publication number: 20230207875
    Abstract: An additive for an electrolyte solution improves the electrochemical properties of a lithium secondary battery.
    Type: Application
    Filed: July 21, 2022
    Publication date: June 29, 2023
    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
  • Publication number: 20230207876
    Abstract: Disclosed is an additive for an electrolyte solution to improve the electrochemical properties of a lithium secondary battery.
    Type: Application
    Filed: August 23, 2022
    Publication date: June 29, 2023
    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
  • Publication number: 20230207877
    Abstract: Proposed is an additive for an electrolyte solution to improve the electrochemical properties of a lithium secondary.
    Type: Application
    Filed: September 22, 2022
    Publication date: June 29, 2023
    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: 11670801
    Abstract: The electrolyte solution for a lithium secondary battery includes: a lithium salt; a solvent; and an anode additive including 1-benzyl-5-(4-nitrophenyl)-1H-1,2,3-triazole-4-carbonitrile represented by Chemical Formula 1 below:
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: June 6, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yoon Sung Lee, Ko Eun Kim, Sung Ho Ban, Seung Min Oh, Ik Kyu Kim, Sang Kyu Kwak, Nam Soon Choi, Sung You Hong, Dae Yeon Hwang, Seo Young Jeong, Hyeon Gyu Moon
  • Patent number: 11646448
    Abstract: The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes 1,2-bis(maleimido)ethane, represented by the following formula 1:
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: May 9, 2023
    Assignees: Hyundai Motor Company, Kia Corporation, UNIST (Ulsan National Insitute of Science and Technology)
    Inventors: Yoon Sung Lee, Seung Min Oh, Ji Eun Lee, Sung Ho Ban, Ik Kyu Kim, Ko Eun Kim, Sang Kyu Kwak, Nam Soon Choi, Woo Gyum Kim, Hyeon Gyu Moon, Sung You Hong, Dae Yeon Hwang
  • Publication number: 20230130827
    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: Application
    Filed: August 23, 2022
    Publication date: April 27, 2023
    Inventors: Jun Ki Rhee, Sung Ho Ban, Yoon Sung Lee, Ko Eun Kim, Hyun Tae Lee, Hong Kyung Lee