Abstract: The present disclosure relates to a manufacturing method of a negative active material for a battery, a negative active material manufactured therefrom, and a lithium secondary battery including the negative electrode, including: the steps of coating a base material for a negative active material with a coating material; and heating the obtained coating product; wherein, the coating material is graphitizable carbon, the softening point is 50° C. or less, and the coating material is included so that the residual carbon amount is 1 to 5 parts by weight with respect to 100 parts by weight of the base material for the negative active material.
Type:
Application
Filed:
November 17, 2021
Publication date:
December 28, 2023
Applicants:
POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Moonkyu CHO, Gang Ho LEE, Sei Min PARK, Jung-Chul AN, Seung Jae YOU, Jung Gyu WOO, Hyun-Chul JO, Jong Hoon YOON
Abstract: A vibration control system calculates a Kurtosis Response Spectrum (KRS) of a response waveform which characterizes non-Gaussianity in a random vibration test and is utilized for vibration control. The system compares a target KRS and the response KRS, and controls a characteristic of a phase used to generate a waveform for control such that the response KRS becomes equal to the target KRS. The waveform for control is generated by applying a random phase to each frequency component of an amplitude corresponding to Power Spectral Density (PSD). The system controls a characteristic of this phase (e.g., standard deviation) per frequency, controls the KRS, deforms the waveform for control on the basis of an equalization characteristic, and calculates a drive waveform. The system sequentially updates the equalization characteristic on the basis of the response waveform and the drive waveform. The calculated drive waveform is provided to a vibration generator.
Type:
Grant
Filed:
March 28, 2022
Date of Patent:
December 5, 2023
Assignees:
Osaka Research Institute of Industrial Science and Technology, IMV CORPORATION
Abstract: A method for preparing a cathode active material precursor for a secondary battery, including: moving a co-precipitation filtrate generated after a co-precipitation reaction to a co-precipitation filtrate storage tank; removing a metal hydroxide by passing the co-precipitation filtrate through a filter; reacting the co-precipitation filtrate from which the metal hydroxide is removed with sulfuric acid or nitric acid to produce an ammonium sulfate or an ammonium nitrate while removing ammonia from the co-precipitation filtrate from which the metal hydroxide is removed; cooling and crystallizing the co-precipitation filtrate from which the metal hydroxide and ammonia are removed to precipitate a sodium sulfate; filtering the precipitated sodium sulfate to separate the precipitated sodium sulfate from the co-precipitation filtrate from which the metal hydroxide and ammonia are removed; drying the sodium sulfate separated from the co-precipitation filtrate and moving the co-precipitation filtrate separated from t
Type:
Grant
Filed:
June 19, 2018
Date of Patent:
November 28, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
Abstract: The manufacturing apparatus for a metal component includes: a preheating portion configured to locally induction-heat a metal plate; and a stamping portion configured to stamp the metal plate. The preheating portion includes a heating coil. The heating coil is arranged such that an axial direction of the heating coil is along a movement direction of the pressing portion and the heating coil faces, in the axial direction, an area where an amount of deformation is relatively large in a processing region of the metal plate to be stamped by the stamping portion. The heating coil is configured such that at least a part of the area where the amount of deformation is relatively large in the processing region of the metal plate is heated to a higher temperature than an area where the amount of deformation is relatively small in the processing region.
Type:
Grant
Filed:
December 28, 2017
Date of Patent:
October 17, 2023
Assignees:
ISHIZAKI PRESS INDUSTRIAL CO., LTD., OSAKA RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
Abstract: Disclosed is a composition for anti-aging or skin regeneration comprising Okanin, and use of Okanin or a salt thereof and, more particularly, to a composition for anti-aging or skin regeneration comprising Okanin represented by the following formula (1) or a salt thereof, and use of Okanin or a salt thereof.
Type:
Application
Filed:
August 27, 2021
Publication date:
October 12, 2023
Applicants:
POSCO CO., LTD, POSTECH Research and Business Development Foundation, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Kyong-Tai KIM, Kwang-Ho KWON, Sung-Wook KIM, Sung-Woo JEONG
Abstract: Disclosed is a composition for anti-aging or skin regeneration comprising Isoprocurcumenol, and use of Isoprocurcumenol or a salt thereof and, more particularly, to a composition for anti-aging or skin regeneration comprising Isoprocurcumenol represented by the following formula (1) or a salt thereof, and use of Isoprocurcumenol or a salt thereof.
Type:
Application
Filed:
August 27, 2021
Publication date:
October 12, 2023
Applicants:
POSCO CO., LTD, POSTECH Research and Business Development Foundation, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Kyong-Tai KIM, Kwang-Ho KWON, Sung-Wook KIM, Sung-Woo JEONG
Abstract: Provided are an alloy coating steel plate and a method of manufacturing the same, and in this case, the alloy coating steel plate includes a steel, and an Al—Mg—Si alloy layer positioned on the steel plate, wherein the Al—Mg—Si alloy layer is formed to include Mg—Si alloy grains in an alloy layer configured in an Al—Mg alloy phase.
Type:
Grant
Filed:
March 30, 2021
Date of Patent:
August 22, 2023
Assignees:
POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Ji Hoon Yang, Jae In Jeong, Yong Hwa Jung, Tae Yeob Kim
Abstract: A sagger for firing an object to be fired includes an active material for a secondary battery. Carbon dioxide that is a reaction by-product produced during a positive electrode active material firing process can be smoothly discharged from the sagger, and such a smooth discharge of carbon dioxide can lower a residual lithium concentration of a positive electrode active material and thus can improve dispersibility of a positive electrode active material slurry and also improve capacity of a battery.
Type:
Grant
Filed:
September 28, 2018
Date of Patent:
August 1, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
Inventors:
Young-Min Park, Woo-Taek Kim, Hyeon-Woo Kim, Soon-Cheol Hwang, Choong-Mo Yang, Yoon-Cheol Park, Keeyoung Jung
Abstract: A method for monitoring a state of wearing safety protective equipment according to an embodiment includes receiving an image from a site monitoring device installed at an operation site determining whether a work performed in a monitoring area corresponds to a dangerous work by analyzing the image; detecting a target worker and a body area of the target worker when it is determined that the work corresponds to the dangerous work as a result of determining whether the work performed in the monitoring area corresponds to the dangerous work; determining a type of safety protective equipment required for the target worker; and determining the state of the target worker wearing the safety protective equipment.
Type:
Application
Filed:
December 20, 2022
Publication date:
June 22, 2023
Applicants:
POSCO Co., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSTECH Research and Business Development Foundation
Abstract: A positive electrode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium transition metal composite oxide and doping metals doped in the lithium-transition metal composite oxide, wherein the doping metals includes at least two kinds and the average oxidation number of the doping metals is greater than 3.5.
Type:
Grant
Filed:
December 7, 2017
Date of Patent:
June 6, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Sang Cheol Nam, Jae Won Lee, Jong Il Park, Jae Myung Lee, Geun Gyung Park
Abstract: The present invention relates to a method for producing lithium phosphate, comprising: passing a lithium-containing solution through an aluminum-based adsorbent to adsorb lithium on the aluminum-based adsorbent, passing the distilled water or an aqueous solution having a lower lithium concentration than the lithium-containing solution through the aluminum-based adsorbent on which the lithium is adsorbed to obtain a lithium-containing desorption solution, and putting a phosphorous supplying material in the lithium-containing desorption solution to obtain lithium phosphate.
Type:
Grant
Filed:
December 18, 2018
Date of Patent:
May 23, 2023
Assignees:
POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Hyun Woo Lee, Woonkyoung Park, Heok Yang, Kwang Seok Park, Seung Taek Kuk, Ki Young Kim, Sang Gil Lee, Woo Chul Jung, Gi-Chun Han, Juyoung Kim, Young-Seon Ko, Jin Yeop Wi
Abstract: Provided are an apparatus and a method for reaction for use in a co-precipitation reaction for preparing a catalyst or a cathode active material for a lithium secondary battery, which injects a raw material (a solution) at least between impellers according to the solution level in a vessel, thereby making a stirring speed uniform and, in particular, minimizing a concentration difference between solutions. The apparatus for the reaction may comprise: a reaction vessel; a stirring means provided inside the reaction vessel and having multistage impellers; and a raw material injecting means, comprising at least one injection nozzle connected to the reaction vessel, for injecting a raw material at least between impellers.
Type:
Grant
Filed:
January 12, 2018
Date of Patent:
April 11, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Abstract: Provided is an alloy-coated steel sheet and a manufacturing method thereof. The alloy-coated steel sheet includes: a steel sheet; and an Al—Mg—Si alloy layer disposed on the steel sheet, wherein the Al—Mg—Si alloy layer has a form in which Mg—Si alloy grains are included in an alloy layer consisting of an Al—Mg alloy phase.
Type:
Grant
Filed:
May 18, 2018
Date of Patent:
March 21, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Ji Hoon Yang, Jae In Jeong, Yong Hwa Jung, Tae Yeob Kim
Abstract: The present invention relates to a positive active material for lithium secondary battery, its manufacturing method, and lithium secondary battery including the same, and it provides that a positive active material for lithium secondary battery, comprising: a core and a coating layer, wherein, the core is lithium metal oxide, the coating layer comprises boron, the boron compound in the coating layer comprises a lithium boron oxide and a boron oxide, the lithium boron oxide is included 70 wt % or more and 99 wt % in the entire coating layer, the lithium boron oxide comprises Li2B4O7, with respect to the lithium boron oxide 100 wt %, the content of Li2B4O7 is 55 wt % or more and 99 wt % or less.
Type:
Grant
Filed:
December 18, 2018
Date of Patent:
March 21, 2023
Assignees:
POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD.
Inventors:
Sung Hwan Min, Jeong Han Kim, Jung Hoon Song
Abstract: A method of manufacturing a secondary battery cathode material includes preparing Li2O powder by separating CO2 from Li2CO3 powder, forming a mixed powder by mixing the Li2O powder with nickel-cobalt-manganese (NCM) precursor powder, and firing the mixed powder using a rotary kiln.
Type:
Application
Filed:
December 15, 2020
Publication date:
March 9, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
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:
Application
Filed:
December 1, 2020
Publication date:
March 9, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
Inventors:
Choongmo YANG, Keeyoung JUNG, Yooncheol PARK, Yeong Woo KIM, Soon Cheol HWANG
Abstract: A vertical-type firing apparatus for a positive electrode material for a secondary battery, for vertically moving and firing the positive electrode material for the secondary battery, comprises: a vertical-type firing furnace including an exhaust part, an air supply part, and a firing space positioned between the exhaust part and the air supply part; and a heater for heating the firing space of the vertical-type firing furnace, wherein the firing space includes a temperature-raising space, a cooling space, and a temperature-maintaining space located between the temperature-raising space and the cooling space, and the temperature of the temperature-maintaining space is higher than the temperature of the temperature-raising space and the temperature of the cooling space.
Type:
Application
Filed:
December 1, 2020
Publication date:
February 23, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
Inventors:
Choongmo YANG, Soon Cheol HWANG, Yooncheol PARK, Keeyoung JUNG
Abstract: The present invention is related to a manufacturing method of a negative active material for a lithium secondary battery, a negative active material for a lithium secondary battery manufactured by the method, and a lithium secondary battery including the same. According to one embodiment, it is provided that: a method of manufacturing a negative active material for lithium secondary battery, comprising: coating a negative active material precursor containing Si with crude tar or soft pitch; and annealing an obtained coating product, wherein, the crude tar contains a low molecular weight component that can be removed by a distillation process in an amount of 20 wt % or less.
Type:
Application
Filed:
December 11, 2020
Publication date:
February 16, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Abstract: The present invention relates to a radiant tube apparatus disposed in a heat treatment facility to perform a heat treatment of a strip and a method for manufacturing the same. The radiant tube apparatus includes a tube having an internal pipe, wherein the tube has a first continuous pattern and a second continuous pattern extending side by side and spaced apart from each other at a predetermined distance on a surface, and, in each of the first continuous pattern and the second continuous pattern, a plurality of unit patterns having a predetermined height from the surface are connected to each other in a longitudinal direction.
Type:
Application
Filed:
November 25, 2020
Publication date:
February 16, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. The positive active material for a lithium secondary battery according to an exemplary embodiment includes lithium metal oxide particles including lithium, nickel, cobalt, manganese and doping elements, and includes a first domain and a second domain inside the lithium metal oxide particles.
Type:
Application
Filed:
December 18, 2020
Publication date:
February 9, 2023
Applicants:
POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Inventors:
Sang Cheol NAM, Sang Hyuk LEE, Kwon Young CHOI, Jung Hoon SONG