Patents by Inventor Jaesang YOON

Jaesang YOON 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: 20250246601
    Abstract: A positive electrode active material includes a first positive electrode active material including a layered lithium nickel-manganese-based composite oxide, the first positive electrode active material being in a form of secondary particles in which a plurality of primary particles are agglomerated; a second positive electrode active material including a layered lithium nickel-manganese-based composite oxide, the second positive electrode active material having a smaller average particle diameter (D50) than the first positive electrode active material, and the second positive electrode active material being in a form of single particles; and a third positive electrode active material including a lithium-manganese-rich composite oxide in which a molar ratio of lithium to a total metal content of the lithium-manganese-rich composite oxide excluding lithium is about 1.
    Type: Application
    Filed: January 29, 2025
    Publication date: July 31, 2025
    Inventors: Young-Ki KIM, Sung Ho CHOO, Seok Mun KANG, Youngsun KONG, Jaesang YOON, Byungwuk KANG, Dowook JUN, Jaeyong JEONG
  • Publication number: 20250246602
    Abstract: A positive electrode active material includes a first positive electrode active material including a layered lithium nickel-manganese-based composite oxide, the first positive electrode active material being in a form of single particles. The positive electrode active material also includes a second positive electrode active material including a lithium-manganese-rich composite oxide in which a molar ratio of lithium to a total metal content of the lithium-manganese-rich composite excluding lithium is about 1.1 to about 3 and a manganese content based on 100 mol % of the total metal content of the lithium-manganese-rich composite excluding lithium is greater than or equal to about 60 mol %, and the second positive electrode active material being in a form of single particles. The positive electrode active material according to some embodiments maximizes capacity while minimizing production cost, ensures long cycle-life, and improves high-voltage characteristics and high-temperature storage characteristics.
    Type: Application
    Filed: January 29, 2025
    Publication date: July 31, 2025
    Inventors: Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Jaesang YOON, Byungwuk KANG, Dowook JUN, Jaeyong JEONG
  • Publication number: 20250246600
    Abstract: A positive electrode active material includes a first positive electrode active material including a layered lithium nickel-manganese-based composite oxide, the first positive electrode active material being in a form of secondary particles in which a plurality of primary particles are agglomerated. The positive electrode active material also includes a second positive electrode active material including a lithium-manganese-rich composite oxide in which a molar ratio of lithium to a total metal content of the lithium-manganese-rich composite oxide excluding lithium is about 1.1 to about 3 and a manganese content based on 100 mol % of a total metal content of the lithium-manganese-rich composite oxide excluding lithium is greater than or equal to about 60 mol %, and the second positive electrode active material being in a form of single particles.
    Type: Application
    Filed: January 29, 2025
    Publication date: July 31, 2025
    Inventors: Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Byungwuk KANG, Jaesang YOON, Dowook JUN, Jaeyong JEONG
  • Publication number: 20250236536
    Abstract: Provided is a positive electrode active material including core particles including zirconium-doped layered lithium nickel-manganese-aluminum-based composite oxide, wherein the core particle is a secondary particle formed by agglomerating a plurality of primary particles, an average particle diameter (D50) of the secondary particles is about 10 ?m to about 25 ?m, and in the zirconium-doped layered lithium nickel-manganese-aluminum-based composite oxide, a zirconium content is about 0.2 mol % to about 0.8 mol % based on 100 mol % of a total metal excluding lithium. The positive electrode active material according to some embodiments may maximize capacity, while minimizing a production cost, to ensure long cycle-life characteristics and improve high-voltage characteristics and high-temperature characteristics.
    Type: Application
    Filed: January 23, 2025
    Publication date: July 24, 2025
    Inventors: Jaesang YOON, Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG, Gwiwoon KANG, Sungwook DOO
  • Publication number: 20250233133
    Abstract: A positive electrode active material including core particles including layered lithium nickel-manganese-based composite oxide, wherein each core particle is a secondary particle formed by agglomerating a plurality of primary particles, and a crystal size of the primary particle is about 105 nm to about 115 nm.
    Type: Application
    Filed: January 17, 2025
    Publication date: July 17, 2025
    Inventors: Sung Ho CHOO, Young-Ki KIM, Youngsun KONG, Sungwook DOO, Jaesang YOON, Seok Mun KANG, Gwiwoon KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250226388
    Abstract: A rechargeable lithium battery including a positive electrode including a positive electrode active material, the positive electrode active material including a first positive electrode active material that includes a layered lithium nickel-manganese-based composite oxide and is in a form of secondary particles formed, the secondary particles including a plurality of primary particles, and an average particle diameter (D50) of the secondary particles is about 10 ?m to about 25 ?m, and a second positive electrode active material that includes a layered lithium nickel-cobalt-based composite oxide and is in a form of single particles, and an average particle diameter (D50) of the single particles is about 0.5 ?m to about 8 ?m.
    Type: Application
    Filed: January 2, 2025
    Publication date: July 10, 2025
    Inventors: Dowook JUN, Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250206636
    Abstract: A method of preparing a positive electrode active material, a positive electrode and a rechargeable lithium battery are provided. The method of preparing the positive electrode active material includes mixing nickel-manganese-based composite hydroxide and a lithium raw material and subjecting them to primary heat treatment at about 200° C. to about 350° C. and secondary heat treatment at about 800° C. to about 1000° C.
    Type: Application
    Filed: December 11, 2024
    Publication date: June 26, 2025
    Inventors: Jaesang YOON, Youngsun KONG, Seok Mun KANG, Dowook JUN, Wonmo SEONG, Naoyuki HASE, Kisuk KANG, Kunhee KO
  • Publication number: 20250192158
    Abstract: A positive electrode active material, a method of preparing the same, and a positive electrode and rechargeable lithium battery including the same, the positive electrode active material including core particles including a layered lithium nickel-manganese-based composite oxide; and a coating layer located on the surface of the core particle and containing aluminum and zinc.
    Type: Application
    Filed: December 6, 2024
    Publication date: June 12, 2025
    Inventors: Seok Mun KANG, Sung Ho CHOO, Youngsun KONG, Young-Ki KIM, Sungwook DOO, Dowook JUN, Jaesang YOON, Gwiwoon KANG, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250140812
    Abstract: A positive electrode active material, a method of preparing the same, a positive electrode, and a rechargeable lithium battery including the same are disclosure. The positive electrode active material includes core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal in the positive electrode active material excluding lithium, and a coating layer located on the surface of the core particles and containing Al, wherein an Al content (e.g., amount) of the coating layer is about 0.5 mol % to about 1.5 mol % based on 100 mol % of a total metal in the layered lithium nickel-manganese-based composite oxide excluding lithium, and the coating layer has a fiber shape (e.g., in a form of fibers, having a fibrous structure, etc.).
    Type: Application
    Filed: October 30, 2024
    Publication date: May 1, 2025
    Inventors: Sung Ho CHOO, Young-Ki KIM, Youngsun KONG, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Dowook JUN, Gwiwoon KANG, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250140794
    Abstract: Disclosed are a positive electrode active material, a positive electrode including the same, and a rechargeable lithium battery, the positive electrode active material includes a first positive electrode active material including a layered lithium nickel-manganese-based composite oxide and a second positive electrode active material including a lithium-manganese rich composite oxide in which a molar ratio of lithium to a total metal excluding lithium is about 1.1 to about 3 and a manganese content is greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium in the lithium-manganese rich composite oxide.
    Type: Application
    Filed: October 28, 2024
    Publication date: May 1, 2025
    Inventors: Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Sungwook DOO, Jaesang YOON, Gwiwoon KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250140811
    Abstract: A positive electrode active material includes a plurality of core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal composition of the lithium nickel-manganese-based composite oxide excluding lithium, and a coating layer located on the surface of the core particle and containing Al and Ti. Also disclosed are a method of preparing the positive electrode active material, and a positive electrode and rechargeable lithium battery including the same.
    Type: Application
    Filed: October 29, 2024
    Publication date: May 1, 2025
    Inventors: Seok Mun KANG, Dowook JUN, Young-Ki KIM, Youngsun KONG, Sungwook DOO, Sung Ho CHOO, Jaesang YOON, Gwiwoon KANG, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250136468
    Abstract: Disclosed are a positive electrode active material, a method of preparing the same, a positive electrode, and a rechargeable lithium battery, the positive electrode active material including core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium in the layered lithium nickel-manganese-based composite oxide, and a coating layer on the surface of the core particle and including Al, wherein an Al content based on a total of 100 at % of Ni, Mn, and Al on a surface of the positive electrode active material is about 20 at % to about 33 at %.
    Type: Application
    Filed: October 28, 2024
    Publication date: May 1, 2025
    Inventors: Sung Ho CHOO, Young-Ki KIM, Youngsun KONG, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250070136
    Abstract: A positive electrode active material includes a core particle including a layered lithium nickel-manganese-based composite oxide, a first coating layer provided on the surface of the core particle and including Al, and a second coating layer provided on the first coating layer and including Ni. A method for preparing a positive electrode active material includes: mixing a layered nickel-manganese composite hydroxide and a lithium raw material and performing a first heat treatment to obtain a lithium nickel-manganese-based composite oxide, adding an aluminum (Al) raw material to an aqueous solvent, adding the lithium nickel-manganese composite oxide thereto and mixing them, then adding a nickel (Ni) raw material and mixing them, and drying the mixture and performing a second heat treatment.
    Type: Application
    Filed: August 23, 2024
    Publication date: February 27, 2025
    Inventors: Byungwuk KANG, Sungwook DOO, Young-Ki KIM, Sung Ho CHOO, Dowook JUN, Gwiwoon KANG, Jaeyong JEONG, Youngsun KONG, Seok Mun KANG, Jaesang YOON
  • Publication number: 20250070153
    Abstract: Disclosed are a positive electrode active material, a method of preparing the same, and a positive electrode and a rechargeable lithium battery including the same, the positive electrode active material including core particles including a layered lithium nickel-manganese-based composite oxide, a first coating layer on a surface of the core particles and containing Al, and a second coating layer on the first coating layer and containing Co.
    Type: Application
    Filed: August 22, 2024
    Publication date: February 27, 2025
    Inventors: Byungwuk KANG, Sungwook DOO, Young-Ki KIM, Sung Ho CHOO, Dowook JUN, Gwiwoon KANG, Jaeyong JEONG, Youngsun KONG, Seok Mun KANG, Jaesang YOON
  • Publication number: 20250070154
    Abstract: A positive electrode active material, a method of preparing the same, a positive electrode and a rechargeable lithium battery including the same are disclosed. The positive electrode active material includes core particles including a layered lithium nickel-manganese-based composite oxide, a first coating layer disposed on a surface of the core particles and containing Al, and a second coating layer disposed on the first coating layer and containing Mn.
    Type: Application
    Filed: August 23, 2024
    Publication date: February 27, 2025
    Inventors: Byungwuk KANG, Young-Ki KIM, Sungwook DOO, Sung Ho CHOO, Dowook JUN, Gwiwoon KANG, Jaeyong JEONG, Youngsun KONG, Jaesang YOON, Seok Mun KANG
  • Publication number: 20250046809
    Abstract: A positive electrode active material includes a first positive electrode active material that includes a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium in the first positive electrode active material and is in a form of secondary particles in which a plurality of primary particles are agglomerated, a second positive electrode active material in a form of single particles including a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium in the second positive electrode active material, and a third positive electrode active material in a form of particles including lithium manganese-based oxide. In addition, a positive electrode and a rechargeable lithium battery each including the positive electrode active material are disclosed.
    Type: Application
    Filed: July 31, 2024
    Publication date: February 6, 2025
    Inventors: Young-Ki KIM, Sung Ho CHOO, Dowook JUN, Gwiwoon KANG, Jaeyong JEONG, Youngsun KONG, Byungwuk KANG, Jaesang YOON, Sungwook DOO, Seok Mun KANG
  • Publication number: 20250046798
    Abstract: A positive electrode active material, a method of preparing the same, a positive electrode and a rechargeable lithium battery including the same are provided. The positive electrode active material includes core particles including a lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal in the positive electrode active material excluding lithium, and a coating layer disposed on the surface of the core particles and including Al, Zr, and Mg.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Inventors: Young-Ki KIM, Sung Ho CHOO, Youngsun KONG, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250046810
    Abstract: Disclosed are positive electrode active materials, positive electrodes, and a rechargeable lithium battery including the same. Some of the positive electrode active materials include particles of a first positive electrode active material including lithium cobalt-based oxide, and particles of a second positive electrode active material including a layered lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium, wherein the first positive electrode active material or the second positive electrode active material includes a coating layer including yttrium.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Inventors: Young-Ki KIM, Youngsun KONG, Sung Ho CHOO, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Do-Wook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250046811
    Abstract: A positive electrode active material including a first positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on about 100 mol % of a total metal excluding lithium and including secondary particles made by agglomerating a plurality of primary particles wherein an average particle diameter (D50) of the secondary particle is about 10 ?m to about 20 ?m, a second positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on about 100 mol % of a total metal excluding lithium and including single particles wherein an average particle diameter (D50) of each of the single particles is about 2 ?m to about 8 ?m, and a third positive electrode active material includes particles including lithium transition metal phosphate.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Inventors: Young-Ki KIM, Sung Ho CHOO, Youngsun KONG, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Do-Wook JUN, Byungwuk KANG, Jaeyong JEONG
  • Publication number: 20250046792
    Abstract: A positive electrode active material includes: a first positive electrode active material including a lithium nickel-manganese composite oxide having a nickel content of at least about 60 mol % based on a total metal excluding lithium and being in a form of secondary particles each including a plurality of primary particles; and a second positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of at least about 60 mol % based on a total metal excluding lithium and being in a form of single particles and a coating layer on the surface of the single particle and containing aluminum and yttrium, an aluminum content of the coating layer being about 0.1 mol % to about 2 mol % and an yttrium content of the coating layer being about 0.1 mol % to about 1 mol %, based on a total metal excluding lithium in the second positive electrode active material.
    Type: Application
    Filed: August 1, 2024
    Publication date: February 6, 2025
    Inventors: Young-Ki KIM, Sung Ho CHOO, Youngsun KONG, Seok Mun KANG, Jaesang YOON, Sungwook DOO, Gwiwoon KANG, Dowook JUN, Byungwuk KANG, Jaeyong JEONG