Patents Assigned to Research Institute of Industrial Science & Technology
  • Publication number: 20250050307
    Abstract: The present exemplary embodiments relate to a sodium ion adsorbent, a method of manufacturing the same, and a method for removing sodium ions. According to an exemplary embodiment, a sodium ion adsorbent for removing sodium ions may include a compound represented by Chemical Formula 1 below. [Chemical Formula 1] HxM1-xAlSi2O6, in Chemical Formula 1, M is one or more elements selected from Na, K, Cs, and Rb, and 0<x?1.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 13, 2025
    Applicants: POSCO Co., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gi-Chun HAN, Sang Won KIM, Seung Goo KIM, Seung Seok LEE, Young-Seon KO, Young Geun SON, Kee Uek JEUNG
  • Publication number: 20250054953
    Abstract: A positive electrode active material for an all-solid-state battery of the present exemplary embodiments may include: a core including a lithium nickel-based oxide; a first coating layer containing cobalt which is placed on a surface of the core; and a second coating layer containing a lithium transition metal oxide which is placed on a surface of the first coating layer.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 13, 2025
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Ji Woong MOON, Tai Hee EUN, Yooncheol PARK, Jung Hoon SONG, Jeongsik YUN, Sang Cheol NAM
  • Publication number: 20250054969
    Abstract: Provided are a positive active material for a lithium secondary battery, a positive electrode including the same, and a lithium secondary battery including the same, the positive active material for lithium secondary batteries including a first metal oxide, which includes nickel, cobalt and manganese, being in single particle form; and a second metal oxide that contains nickel, cobalt, and manganese and is in the form of a secondary particle containing a plurality of primary particles and has an average particle diameter D50 larger than that of the first metal oxide; wherein, a nickel content of the second metal oxide is 0.8 mol or more, based on 1 mole of the total of nickel, cobalt and manganese in the second metal oxide, and a nickel content of the first metal oxide is 0.03 mole to 0.17 mole more than the nickel content of the second metal oxide.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 13, 2025
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
    Inventors: Sang Cheol NAM, Byong Yong YU, Kijoo HONG, Jong II PARK, Sang Hyuk LEE, Kwon Young CHOI
  • 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: 12162774
    Abstract: This disclosure relates to a method of preparing a lithium compound that includes preparing a lithium phosphate, mixing the lithium phosphate with sulfuric acid to obtain a mixture, converting the lithium phosphate into lithium sulfate through a reaction in the mixture, and separating the lithium sulfate in a solid phase, wherein in the step of converting the lithium phosphate into lithium sulfate through the reaction in the mixture, a sum concentration ([P+S] mol/L) of phosphorus (P) and sulfur (S) in a liquid phase of the mixture is greater than or equal to 5 mol/L.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 10, 2024
    Assignees: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Juyoung Kim, Ki Young Kim, Woo Chul Jung, Kwang Seok Park, Hyunwoo Lee, Woonkyoung Park, Sang Won Kim, Jung Kwan Park, Heok Yang, Sung Kook Park, Seung Taek Kuk
  • 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: 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
  • Publication number: 20240363832
    Abstract: One embodiment of the present invention relates to a lithium metal anode. Wherein the lithium metal anode comprises a current collector and a lithium metal thin film layer disposed on at least one surface of the current collector and having a thickness in a range of 0.1 to 200 ?m and a coating layer disposed on a surface of the lithium metal thin film layer, wherein, the coating layer comprising a Li—N—C—H—O based ionic compound.
    Type: Application
    Filed: May 13, 2024
    Publication date: October 31, 2024
    Applicants: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jin Hong Kim, Hong-Youl Bae, Mun Kyu Cho, Nam Soon Choi, Sang-Lag Lee, Weon-Soo Bae, Yong Won Lee, Ji-Woong Moon
  • Patent number: 12129174
    Abstract: The present disclosure provides a catalyst for a water gas shift reaction at middle temperature, the catalyst comprising a catalytically active component containing 40 to 80 mol % of copper (Cu), 15 to 50 mol % of zinc (Zn), and 1 to 13 mol % of aluminum (Al), relative to all metals of the catalyst, wherein an aluminum-rich layer is present in a surface layer of a particle of the catalyst. Furthermore, the present disclosure provides a preparation method of the catalyst, and a hydrogen preparation method using the same.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: October 29, 2024
    Assignees: Research Institute of Industrial Science & Technology, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Joon-Woo Kim, Young-Woong Suh, Dong-Jun Koh, Cheon-Woo Jeong
  • Patent number: 12126018
    Abstract: The present invention provides a cathode active material for a lithium secondary battery comprising secondary particles in which primary particles represented by Chemical Formula 1 below are aggregated, wherein the average particle size (D50) of the secondary particles is 2.5 ?m or more and 7 ?m or less, and the average value of the sphericity coefficient, which is the ratio (l/w) of the long axis length (l) to the short axis length (w) of the secondary particles, is 1.0 to 1.25.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: October 22, 2024
    Assignee: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jung Hoon Song, Sang Cheol Nam, 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
  • Patent number: 12095026
    Abstract: The present invention relates to an all-solid-state battery including: a battery supporting member including an oxide-based solid electrolyte of a garnet structure; a positive electrode disposed on a first surface of the battery supporting member; and a negative electrode disposed on a second surface of the battery supporting member, wherein the positive electrode includes: a positive active material layer in contact with the first surface of the battery supporting member and including a positive active material represented by a predetermined chemical formula, and an ion conductor; and a positive current collector disposed on the positive active material layer, a manufacturing method thereof, a secondary battery including the same, and a monolithic battery module including the same.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 17, 2024
    Assignee: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Sang Cheol Nam, In Sung Lee, Eul Noh
  • Patent number: 12085339
    Abstract: An apparatus for calcining a secondary battery cathode material includes: a calcination furnace including an inner space that includes a temperature rising space, a temperature maintaining space, and a cooling space, which sequentially communicate; a plurality of rollers for transferring a sagger, in which a cathode material is accommodated, from the temperature rising space to the cooling space via the temperature maintaining space; a plurality of heaters arranged along the inner space; a plurality of gas feeding parts for feeding gas to the inner space; and a plurality of exhaust parts for exhausting gas from the inner space, wherein the cross-sectional area of the temperature maintaining space is smaller than the cross-sectional area of the temperature rising space and the cross-sectional area of the cooling space.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: September 10, 2024
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Choongmo Yang, Keeyoung Jung, Yooncheol Park, Yeong Woo Kim, Soon Cheol Hwang
  • Patent number: 12084745
    Abstract: A copper alloy powder is a copper alloy powder for additive manufacturing. The copper alloy powder contains more than 1.00 mass % and not more than 2.80 mass % of chromium, and a balance of copper. A method for producing an additively-manufactured article includes a first step of preparing a copper alloy powder containing more than 1.00 mass % and not more than 2.80 mass % of chromium and a balance of copper and a second step of producing the additively-manufactured article from the copper alloy powder, and the additively-manufactured article is produced such that forming a powder layer including the copper alloy powder, and solidifying the copper alloy powder at a predetermined position in the powder layer to form a shaped layer are sequentially repeated to stack such shaped layers to thus produce the additively-manufactured article.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: September 10, 2024
    Assignees: DAIHEN CORPORATION, Osaka Research Institute of Industrial Science and Technology
    Inventors: Ryusuke Tsubota, Yohei Oka, Akira Okamoto, Takayuki Nakamoto, Takahiro Sugahara, Naruaki Shinomiya, Mamoru Takemura, Sohei Uchida
  • 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: 20240294999
    Abstract: The present disclosure is that plating steel with spangles can be subjected to constant humidity heat treatment. Due to this, the degree of blackening is different depending on the spangle pattern, and then a black plated steel sheet having a marble texture and a beautiful pattern can be obtained when the blackening is completed.
    Type: Application
    Filed: December 21, 2021
    Publication date: September 5, 2024
    Applicants: POSCO Co., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Hye Jeong Kim, Kyung Hwang Lee, Taek Geun Lee