-
公开(公告)号：US20240413331A1
公开(公告)日：2024-12-12
申请号：US18268709
申请日：2021-12-20
Inventor： Gang Ho LEE , Jung-Chul AN , Sei Min PARK , Jong Hoon YOON , Hyun-Chul JO
IPC: H01M4/587 , C01B32/205 , C01B32/21 , H01M4/02 , H01M4/36
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.
-
公开(公告)号：US20240297290A1
公开(公告)日：2024-09-05
申请号：US18268172
申请日：2021-12-17
Applicant: POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO Chemical Co., Ltd.
Inventor： 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
CPC classification number: H01M4/0471 , F27B17/0083 , F27B2017/0091 , H01M2004/028
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.
-
3.发明授权公开(公告)号：US11901552B2
公开(公告)日：2024-02-13
申请号：US16770248
申请日：2018-12-07
Applicant: POSCO HOLDINGS INC. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO FUTURE M CO., LTD.
Inventor： Kwon Young Choi , Jong Il Park , Sang Cheol Nam , Sang Hyuk Lee
CPC classification number: H01M4/525 , H01M4/131 , H01M4/366 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: The present disclosure relates to a positive active material for a lithium rechargeable battery and a lithium rechargeable battery including the same, which include a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, and a content of the first compound is 65 wt % or more based of the positive active material of 100 wt %.
Lia1Nib1Coc1Mnd1M1e1M2f1O2-f1[ Chemical Formula 1]
Lia2Nib2COc2Mnd2M3e2M4f2O2-f2[ Chemical Formula 2]
Chemical Composition 1 and 2 of each composition and molar ratio is as defined in the specification. Each composition and molar ratio of Chemical Formula 1 and 2 is as defined in the specification.-
公开(公告)号：US11827524B2
公开(公告)日：2023-11-28
申请号：US16772913
申请日：2018-06-19
Applicant: POSCO HOLDINGS INC. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO FUTURE M CO., LTD.
Inventor： Ki Sung You , Hwang Yol Ryu
CPC classification number: C01D5/08 , B01J19/24 , C01C1/185 , C01C1/24 , H01M4/0497 , H01M4/58 , H01M10/054 , B01J2219/00029 , B01J2219/00033 , H01M2004/028
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 the sodium sulfate to a circulation concentration tank; and heating the co-precipitation filtrate stored in the circulation concentration tank to a predetermined temperature for recycling and performing N2 purging or bubbling, is provided.
-
公开(公告)号：US20250087673A1
公开(公告)日：2025-03-13
申请号：US18722236
申请日：2022-12-09
Applicant: POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO FUTURE M CO., LTD.
Inventor： Kijoo HONG , Byong Yong YU , Kwon Young CHOI , Ju Seong KIM , Sang Cheol NAM
IPC: H01M4/36 , C01G53/00 , H01M4/38 , H01M4/525 , H01M10/052
Abstract: A positive active material for a lithium secondary battery according to an exemplary embodiment includes a lithium composite transition metal oxide and a surface layer formed on a particle surface of the lithium composite transition metal oxide, and a content of nickel (Ni) in the lithium composite transition metal oxide. is more than 0.85 mol, the surface layer contains cobalt (Co) and aluminum (Al), and in the surface layer, the distribution of the cobalt (Co) and aluminum (Al) components have different concentration gradients.
-
Patent Agency Ranking
公开(公告)号：US20250079543A1
公开(公告)日：2025-03-06
申请号：US18284767
申请日：2022-03-29
Applicant: POSCO Holdings Inc. , POSCO CO., LTD
Inventor： Sang Woo HAN , Wan-Yi KIM , Sanghyeon YOON , Hyunjin CHO , Sungsuk JUNG
Abstract: The present invention relates to a processing method for reusing a waste battery, the processing method comprising the steps of: cooling, for a minimum cooling time satisfying formula 1 below, a battery pack comprising: as a unit cell, a battery that includes a plurality of lithium ions, and freezing same; and crushing the frozen battery pack. minimum cooling time = A × W 0.33 ( A = 4 × e ( - 0.02 × dT ) , W = battery weight ( Kg ) , dT = ❘ "\[LeftBracketingBar]" external cooling temperature - target temperature ❘ "\[RightBracketingBar]" , ❘ "\[LeftBracketingBar]" ❘ "\[RightBracketingBar]" means absolute value )
-
7.发明公开公开(公告)号：US20240186508A1
公开(公告)日：2024-06-06
申请号：US18553301
申请日：2022-03-30
Applicant: POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO CHEMICAL CO., LTD
Inventor： Sang Cheol NAM , kwon Young CHOI , Jung Hoon SONG , Sanghyuk LEE
CPC classification number: H01M4/525 , H01M4/366 , H01M4/505 , H01M4/62 , H01M2004/028
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.
-
公开(公告)号：US20230420675A1
公开(公告)日：2023-12-28
申请号：US18037267
申请日：2021-11-17
Applicant: POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO FUTURE M CO., LTD.
Inventor： Moonkyu CHO , Gang Ho LEE , Sei Min PARK , Jung-Chul AN , Seung Jae YOU , Jung Gyu WOO , Hyun-Chul JO , Jong Hoon YOON
IPC: H01M4/587 , H01M10/0525 , H01M4/133 , C01B32/21 , C09D195/00 , C09D1/00
CPC classification number: H01M4/587 , H01M10/0525 , H01M4/133 , C01B32/21 , C09D195/00 , C09D1/00 , H01M2004/027
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.
-
公开(公告)号：US20220341017A1
公开(公告)日：2022-10-27
申请号：US17762533
申请日：2020-09-24
Applicant: POSCO , STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION , POSCO COATED & COLOR STEEL CO., LTD.
Inventor： Sung-Joo Kim , Kyung-Kwan Park , Moon-Hi Hong , Heung-Yun Kim , Tae-Yeul Park , Myung-Soo Kim , Il-Ryoung Sohn , Tae-Chul Kim , Dae-Young Kang
Abstract: Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
-
公开(公告)号：US20210143425A1
公开(公告)日：2021-05-13
申请号：US16639841
申请日：2018-08-01
Inventor： Jung-Chul An , Sei Min Park , Jae Eun Lee , Byoung Ju Kim , Seung Jae You , Hyoung Geun Kim , Sang Eun Lee , Chan Woo Lee , Hyun-Chul Jo , Myung Ki Kim
IPC: H01M4/587 , C01B32/05 , H01M10/0525
Abstract: Presented is a method for producing a negative electrode active material which has a high discharge capacity, high charge-discharge efficiency, and excellent high-output characteristics, and which experiences only a small volume change during charging/discharging. A method for producing a negative electrode active material for a lithium secondary battery according to an embodiment of the present invention includes: a step for producing primary particles by pulverizing a carbon raw material containing 4 to 10 wt % of volatile matters; a step for producing secondary particles by mixing the primary particles with a binder; and a step for producing a graphite material by graphitizing the secondary particles.
-
-
-
-
-
-
-
-
-
Search Results
1929
records
(took 0.018 seconds)
