Patents by Inventor Jeong Geun Jo

Jeong Geun Jo 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: 20240222593
    Abstract: A method for manufacturing a positive electrode for a lithium secondary battery includes: (S1) forming a positive electrode active material layer by applying a positive electrode slurry composition comprising lithium iron phosphate and a binder onto a current collector and drying it; (S2) rolling a positive electrode active material layer N times (N is an integer greater than or equal to 2). In the rolling step during the first rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 5% to 15%, and during subsequent rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 3.5% or less.
    Type: Application
    Filed: December 23, 2022
    Publication date: July 4, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Youn Cheol Joe, O Jong Kwon, Ki Woong Kim, Min Hyun Kim, Jeong Geun Jo
  • Publication number: 20240194872
    Abstract: A positive electrode includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium iron phosphate and a second lithium iron phosphate as a positive electrode active material, the first lithium iron phosphate has an average particle diameter D50 grater than that of the second lithium iron phosphate and at least one facet, and when the cross section of the positive electrode is observed with a scanning electron microscope (SEM), the cross section of the first lithium iron phosphate has at least one side having a length of 2 ?m or more.
    Type: Application
    Filed: December 23, 2022
    Publication date: June 13, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: O Jong Kwon, Jung Hun Choi, Ju Ryoun Kim, Yong Hee Kang, Ji Eun Kim, Min Chul Jang, Ki Woong Kim, In Gu An, Jeong Geun Jo
  • Publication number: 20240097126
    Abstract: A manufacturing method of a positive electrode for a lithium secondary battery includes: a step of preparing a positive electrode in which a positive electrode active material layer including a lithium iron phosphate formed on a current collector; and a step of adsorbing an organic solvent to the positive electrode active material layer, the organic solvent including one or more of N-methyl-2-pyrrolidone (NMP), acetone, ethanol, propylene carbonate, ethylmethyl carbonate, ethylene carbonate, and dimethyl carbonate.
    Type: Application
    Filed: October 28, 2022
    Publication date: March 21, 2024
    Applicants: LG Energy Solution, Ltd., LG Energy Solution, Ltd.
    Inventors: O Jong Kwon, Ki Woong Kim, In Gu An, Min Hyun Kim, Youn Cheol Joe, Jeong Geun Jo
  • Publication number: 20230207798
    Abstract: A positive electrode slurry composition includes a positive electrode active material, a conductive material, a binder, a dispersant, and a solvent, wherein the positive electrode active material includes lithium iron phosphate, the lithium iron phosphate has an average particle diameter D50 of 1.5 ?m or more, and the dispersant is included in an amount of 0.2 parts by weight to 0.9 parts by weight with respect to 100 parts by weight of solids in the positive electrode slurry composition.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: O Jong Kwon, Jung Hun Choi, Ju Ryoun Kim, Min Chul Jang, Ki Woong Kim, In Gu An, Young Hee Kang, Ji Eun Kim, Jeong Geun Jo
  • Publication number: 20230207807
    Abstract: A positive electrode slurry composition includes a positive electrode active material, a dispersant, a conductive material, a binder, and a solvent, wherein the positive electrode active material includes lithium iron phosphate, and the dispersant has a weight-average molecular weight of 10,000 g/mol to 150,000 g/mol.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: O Jong Kwon, Min Hyun Kim, Youn Cheol Joe, Ju Ryoun Kim, Jeong Geun Jo, Ki Woong Kim, In Gu An