Patents Assigned to POSCO HOLDINGS INC.
  • Publication number: 20250033994
    Abstract: The present exemplary embodiments relate to a positive electrode active material, its manufacturing method, and a lithium secondary battery including the same. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including: a metal oxide particle comprising a central portion and a surface portion located on the surface of the central portion, wherein, the metal oxide particle includes nickel, cobalt, manganese, and doping elements and is composed of a single particle, and the metal oxide particle includes a crystal phase of layered structure belonging to the R-3m space group on the surface, and an average grain size is 1550 ? or more.
    Type: Application
    Filed: September 2, 2022
    Publication date: January 30, 2025
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Kwon Young CHOI, Jung Hoon SONG, Sanghyuk LEE, Inchul PARK, Ohmin KWON, Byong Yong YU, Kijoo HONG, Sang Cheol NAM
  • Publication number: 20250023127
    Abstract: The present invention relates to a discharge method of a battery, comprising: a first discharging step of discharging a battery by connecting the battery and a power converter and applying voltage thereto; and a second discharging step of discharging the battery by applying a reverse voltage of the voltage of the first discharging step, after the first discharging step. According to the present invention, electrical energy of a battery can be recovered and recycled, and an electrically safe state can be secured in a subsequent disassembly process by putting the battery in a completely discharged state in which normal operation is impossible.
    Type: Application
    Filed: December 16, 2022
    Publication date: January 16, 2025
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Tae-Joon PARK, Seung-Hee LEE, Lae-Kyoung LEE, Ok-Ju WOO, Hyeon-Gon WI, Kwon-Young CHOI
  • Publication number: 20240413331
    Abstract: It is related to a manufacturing method of a negative electrode active material for lithium secondary battery, comprising: preparing an artificial graphite; mixing the artificial graphite and a coal tar to form a coating layer on the artificial graphite; and carbonizing the artificial graphite on which the coating layer is formed, wherein, the artificial graphite has a degree of sphericity of 0.6 to 1; and in the step of preparing an artificial graphite, the artificial graphite contains 20 wt % or more of artificial graphite derived from coal-based coke.
    Type: Application
    Filed: December 20, 2021
    Publication date: December 12, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Gang Ho LEE, Jung-Chul AN, Sei Min PARK, Jong Hoon YOON, Hyun-Chul JO
  • Patent number: 12136728
    Abstract: The present invention relates to a lithium metal anode, a method for manufacturing same, and a lithium secondary battery using same. The lithium metal anode include a current collector having a flat structure and an anode active material layer including a lithium metal disposed on the current collector, wherein the lithium metal has a concave-convex structure and no dendrite is present on the surface of the lithium metal.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: November 5, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Hongyoul Bae, Jin Hong Kim, Sihwa Lee, Weon Soo Bae, Sang Lag Lee
  • Patent number: 12136732
    Abstract: A positive active material for a lithium secondary battery and a lithium secondary battery including the same are provided, wherein the positive active material includes lithium, nickel, cobalt, manganese, and a doping element, and the doping element may include Zr, Al, and Ti.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: November 5, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD.
    Inventors: Sang Cheol Nam, Jung Hoon Song, Kwon Young Choi
  • Patent number: 12117242
    Abstract: A furnace for producing a secondary battery cathode material according to an exemplary embodiment of the present invention includes; a chamber of which the internal space is heated by a heater, a conveyer installed in the chamber and conveying a sagger containing raw material power of a cathode material of a secondary battery in one direction; and a gas supply nozzle and an exhaust port installed in the chamber. The chamber is divided into a front chamber, an intermediate chamber, and a rear chamber. The intermediate chamber has an inlet shutter and an outlet shutter for sealing the internal space thereof, and an exhaust port of the intermediate chamber is connected to an exhaust device for discharging gas.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 15, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
    Inventors: Keeyoung Jung, Choongmo Yang, Yoon Cheol Park, Soon Cheol Hwang, Yeong Woo Kim, Young Min Park
  • Publication number: 20240322282
    Abstract: Provided is a method for recovering lithium from a waste lithium battery cell including: heat treating a mixture including a waste lithium battery cell and an additive; and trapping a lithium salt produced in the heat treating.
    Type: Application
    Filed: December 5, 2022
    Publication date: September 26, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Eun Jin JUNG, Gilsoo HAN, Kwang Sun WOO, Byung Won KIM
  • Publication number: 20240313214
    Abstract: It is related to a positive electrode active material for lithium secondary battery, comprising: a compound represented by Chemical Formula 1, wherein a molar content of lithium present in the structure of the positive electrode active material, measured through neutron diffraction analysis, is 1.01 to 1.15 for 1 mole of the positive electrode active material, a method of preparing it, and a lithium secondary battery including the same. Li1+a(NibM11-b)1-aO2??[Chemical Formula 1] In the Chemical Formula 1, 0<a<0.2, 0.8<b<1, M1 is at least one element selected from Co, Mn, Al, Mg, Ca, Ti, V, Cr, Zr, Nb, Mo, and W.
    Type: Application
    Filed: November 17, 2021
    Publication date: September 19, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Inchul PARK, Hyungsub KIM, Sang Hyuk LEE, Jung Hoon SONG, Junghoon KIM, Sang Cheol NAM, Kwon Young CHOI, Ohmin KWON, Seok Hyun SONG
  • Publication number: 20240297305
    Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. According to an exemplary embodiment, a positive electrode active material for a lithium secondary battery including a metal oxide particle including nickel, cobalt, manganese and aluminum, and three types of doping elements doped on the metal oxide particle is provided.
    Type: Application
    Filed: December 13, 2021
    Publication date: September 5, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Jung Hoon SONG, Sang Cheol NAM, Sang Hyuk LEE, Kwon Young CHOI, Inchul PARK, Ohmin KWON
  • Publication number: 20240297290
    Abstract: A vertical type apparatus for firing a cathode material of a secondary battery is provided. The vertical type apparatus for firing the cathode material according to the present disclosure includes a plurality of saggers, each having an open upper portion, provided with a through-slit for gas flow in a lower surface thereof, and loaded with the cathode material therein, and a plurality of unit firing furnaces, each having an open upper portion, each plurally stacked in the vertical direction, each receiving the respective sagger.
    Type: Application
    Filed: December 17, 2021
    Publication date: September 5, 2024
    Applicants: POSCO Holdings Inc., Research Institute of Industrial Science & Technology, POSCO Chemical Co., Ltd.
    Inventors: Choongmo YANG, Yong Hyun LEE, Jongyun MOON, Byoung Mu DO, Yeong Woo KIM, Sang Keun SONG, Soon Cheol HWANG, Jeong Heon HEO, Ji Woong MOON, Woo Taek KIM, Hyeon Woo KIM, Keeyoung JUNG, Yooncheol PARK, Min Young HWANG
  • Publication number: 20240282950
    Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. According to an exemplary embodiment, a positive electrode active material for a lithium secondary battery including a metal oxide particle including nickel, cobalt and manganese, and five types of doping elements doped on the metal oxide particles is provided.
    Type: Application
    Filed: December 20, 2021
    Publication date: August 22, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Jung Hoon SONG, Sang Cheol NAM, Sanghyuk LEE, Kwon Young CHOI, Inchul PARK, Ohmin KWON
  • Publication number: 20240270600
    Abstract: The present invention provides a positive electrode active material, its manufacturing method and a lithium secondary battery containing the same. The positive electrode active material for a lithium secondary battery of the present invention is a positive electrode active material for lithium secondary battery, comprising: a lithium metal oxide particle; and a coating layer positioned on at least part of the lithium metal oxide particle surface; wherein, the coating layer includes any one or more of group 5 elements and group 6 elements, B, LiOH, Li2CO3 and Li2SO4.
    Type: Application
    Filed: December 20, 2021
    Publication date: August 15, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Ohmin KWON, Kwon Young CHOI, Sang Hyuk LEE, Jung Hoon SONG, Jong II PARK, Sang Cheol NAM, Inchul PARK, Geun HWANGBO
  • Patent number: 12046743
    Abstract: A positive active material, a manufacturing method thereof, and a lithium secondary battery including the same are disclosed, and a positive active material including lithium metal oxide particles in a secondary particle form including primary particles, wherein the secondary particle surface includes planar primary particles with a narrow angle of 70 to 90° from among angles between a c axis of the primary particles and a straight line connecting a virtual point of a center of the primary particle and a center point of the secondary particle may be provided.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: July 23, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCOC CHEMICAL CO., LTD
    Inventors: Kwon Young Choi, Sang Hyuk Lee, Jong Il Park, Jung Hoon Song, Sang Cheol Nam
  • Publication number: 20240222619
    Abstract: Provided is a positive active material for a lithium secondary battery including a compound represented by the following formula 1, wherein, a molar content of lithium present in a structure of the positive active material, measured through neutron diffraction analysis, is 1.02 to 1.15 per mole of the positive active material, and a c-axis lattice constant variation ratio of the R-3m structure is less than 2.3% for charge and discharge in the 2.5 V to 4.25 V range, [Chemical Formula 1] Li1+a(NibM11-b)1-aO2 in formula 1 above, 0<a<0.2, 0.8<b<1, and M1 is one or more elements selected from Co, Mn, Al, Mg, Ca, Ti, V, Cr, Zr, Nb, Mo, and W.
    Type: Application
    Filed: April 26, 2022
    Publication date: July 4, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Inchul PARK, Hyungsub KIM, Sanghyuk LEE, Jung Hoon SONG, Junghoon KIM, Kwon Young CHOI, Ohmin KWON, Sang Cheol NAM, Seok Hyun SONG
  • Publication number: 20240186508
    Abstract: The present exemplary embodiments relate to positive electrode active materials. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including a center and a surface portion positioned on the surface of the center, where the metal oxide particle includes nickel, cobalt, manganese, and doping elements, and is composed of single particles, and the doping elements include two or more species selected from the group consisting of Zr, Al, B, P, La, Ta, Ti, W, Mo, Si, Ga, Zn, Nb, Ag, Sn, Bi, Au, Y, Ge, V, Cr, and Fe.
    Type: Application
    Filed: March 30, 2022
    Publication date: June 6, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Sang Cheol NAM, kwon Young CHOI, Jung Hoon SONG, Sanghyuk LEE
  • Patent number: 11973221
    Abstract: It is related to a positive active material for lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery containing the same, provides that a positive active material for lithium secondary battery, wherein, it is a layered lithium metal compound comprises nickel, cobalt, and manganese, and aluminum, zirconium, and boron are doped.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: April 30, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
    Inventors: Sang Cheol Nam, Sang Hyuk Lee, Junghoon Kim
  • Publication number: 20240136509
    Abstract: A positive electrode active material for a lithium secondary battery, a manufacturing method thereof, and it is provided a positive electrode active material for a lithium secondary battery, comprising: a core containing a lithium nickel-based compound having a Ni content of 80 mol % or more; and a coating material positioned on at least a portion of the core surface; wherein, the coating material includes a first coating material containing at least one of group 5 elements and group 6 elements; and S; and a second coating material including B, LiOH, Li2CO3 and Li2SO4.
    Type: Application
    Filed: November 15, 2021
    Publication date: April 25, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Ohmin KWON, Sang Cheol NAM, Kwon Young CHOI, Jung Hoon SONG, Sanghyuk LEE, Inchul PARK
  • Publication number: 20240136515
    Abstract: A positive electrode active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, wherein the positive electrode active material is a lithium nickel-based compound particle having a Ni content of 75 mol % or more, and a difference in concentration of Al between the center and the surface in the lithium nickel-based compound particle is less than 1 mol %.
    Type: Application
    Filed: November 15, 2021
    Publication date: April 25, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Sanghyuk LEE, Jong II PARK, Jung Hoon SONG, Sang Cheol NAM, Kwon Young CHOI, Inchul PARK, Ohmin KWON
  • Publication number: 20240063385
    Abstract: The present exemplary embodiments provide a positive electrode active material, a manufacturing method thereof, and a lithium secondary battery including the same. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including a center and a surface portion positioned on the surface of the center, but the metal oxide particle is composed of a single particle, and the surface portion includes a film in which no peak is observed during XRD measurement.
    Type: Application
    Filed: December 13, 2021
    Publication date: February 22, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Sang Cheol NAM, Kwon Young CHOI, Jung Hoon SONG, Sang Hyuk LEE
  • Publication number: 20240055586
    Abstract: The present embodiments relate to a negative electrode active material for a lithium secondary battery, a method for preparing the same, and a lithium secondary battery comprising the same. The negative electrode active material for a lithium secondary battery, according to one embodiment, comprises a silicon-carbon composite comprising silicon nanoparticles and a carbon matrix, and can have a degree of oxidation that is less than or equal to 10.5%.
    Type: Application
    Filed: December 21, 2021
    Publication date: February 15, 2024
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Seung Jae YOU, Sun Jong PARK, Eun-Tae KANG, Yong Jung KIM, Jung Gyu WOO, Moonkyu CHO, Sangeun PARK