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1.发明公开
公开(公告)号：EP4254558A1
公开(公告)日：2023-10-04
申请号：EP21898544.8
申请日：2021-11-23
发明人： CHOI, Seung Un , KIM, Jae Han , KIM, Deuk Su , PARK, Hye Jeong , KIM, Jeong Han
IPC分类号： H01M4/525 , H01M4/505 , C01G53/00 , H01M10/052
摘要： The present invention relates to a lithium battery cathode active material and a preparation method therefor, the material having an orientation formed by firing a density gradient precursor in which the density gradually changes from the inside of second particles, formed as an aggregate of primary particles, to the outside of the particles. The lithium battery cathode active material according to the present invention has an oriented structure, and thus can have a long lifespan and high capacity characteristics.
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2.发明公开
公开(公告)号：EP4447154A1
公开(公告)日：2024-10-16
申请号：EP22904704.8
申请日：2022-12-09
发明人： KIM, Dae Sik , LEE, Heon Young , CHOI, Hyun Ki , KO, Seunghyun , KIM, Ga Eun , JANG, Yeonghun , PARK, Hyeonggu , HWANG, Da Yeoung Geul
IPC分类号： H01M4/36 , H01M4/587 , H01M10/0525 , C01B32/205 , H01M4/02
摘要： One embodiment provides a negative active material for a lithium secondary battery, that includes a first graphite particle and a second graphite particle at a weight ratio of 80:20 to 95:5, and the particle diameter D50 of the second graphite particle is 80% or less of the particle diameter D50 of the first graphite particle. The lithium secondary battery containing the negative active material has excellent output characteristics and excellent productivity and economic efficiency.
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公开(公告)号：EP4456189A1
公开(公告)日：2024-10-30
申请号：EP22911788.2
申请日：2022-12-16
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , Posco Future M Co., Ltd
发明人： NAM, Sang Cheol , YU, Byong Yong , HONG, Kijoo , PARK, Jong Il , LEE, Sang Hyuk , CHOI, Kwon Young
摘要： The present exemplary embodiments relate to a positive active material for a lithium secondary battery, a positive electrode including the same, and a lithium secondary battery including the same. A positive active material for lithium secondary batteries according to an exemplary embodiment include:
a first metal oxide, which includes nickel, cobalt and manganese, is 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.-
公开(公告)号：EP4456188A1
公开(公告)日：2024-10-30
申请号：EP22911780.9
申请日：2022-12-16
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , Posco Future M Co., Ltd
发明人： YU, Byong Yong , HONG, Kijoo , SONG, Jung Hoon , LEE, Sanghyuk , CHOI, Kwon Young , HAN, Chang Joo , NAM, Sang Cheol
摘要： The present exemplary embodiments relate to a positive active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same. The positive active material for a lithium secondary battery according to an exemplary embodiment includes first lithium metal oxide that contains nickel, cobalt, manganese, and doping elements, is in the form of single particles, and has a unit cell volume of 101.50 Å or more.
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5.发明公开
公开(公告)号：EP4447155A1
公开(公告)日：2024-10-16
申请号：EP22904722.0
申请日：2022-12-09
发明人： JUNG, Myung Sun , LEE, Heon Young , CHOI, Hyun Ki , KIM, Dae Sik , KWON, Ki Min , PARK, Hyeonggu , LEE, Jae Hyeon
IPC分类号： H01M4/36 , H01M4/587 , H01M10/0525 , C01B32/05 , H01M4/02
摘要： One embodiment provides a negative active material for lithium secondary battery, comprising:
a first coke with a Total Fibrosity Index (TFI) of 0.70 to 0.85 and a second coke with a Total Fibrosity Index (TFI) of 0.01 to 0.60 at a weight ratio of 4:1 to 50:1, and wherein, a lithium secondary battery containing the negative active material has an average voltage value of -0.16 V or more at the 40% of SOC (State of Charge), based on the entire battery charge capacity of 100%. Lithium secondary batteries containing the negative active material have excellent charge/discharge and rate characteristics.-
公开(公告)号：EP4446681A1
公开(公告)日：2024-10-16
申请号：EP22904476.3
申请日：2022-11-03
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , Posco Future M Co., Ltd
发明人： YANG, Choongmo , JUNG, Keeyoung , HWANG, Min Young , KIM, Yeong Woo , HWANG, Soon Cheol , HEO, Jeong Heon , PARK, Yooncheol
摘要： Provided is an apparatus for firing a cathode material of a secondary battery which fires a cathode material for a secondary battery by moving the cathode material in a horizontal direction, including: a firing furnace including an air supply part which is placed in a lower portion and to which gas is supplied, an exhaust part which is placed in an upper portion and from which the gas is exhausted, and a firing space which is placed between the air supply part and the exhaust part and extended in a vertical direction intersecting the horizontal direction; a heater which heats the firing space of the firing furnace; a plurality of saggers which store the cathode material for a secondary battery and are stacked in the vertical direction in the firing space; and a pusher which has the plurality of saggers settled therein and moves the plurality of saggers in the horizontal direction.
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公开(公告)号：EP4456184A1
公开(公告)日：2024-10-30
申请号：EP22911712.2
申请日：2022-12-09
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , Posco Future M Co., Ltd
摘要： 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.
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公开(公告)号：EP4439711A1
公开(公告)日：2024-10-02
申请号：EP22898851.5
申请日：2022-10-20
发明人： LEE, Ga Eul , JUNG, Ji Kwon , LEE, Heon Young , LEE, Kyoung Muk , KWON, Hae Jun , MIN, Jin Wook
IPC分类号： H01M4/36 , H01M4/587 , H01M4/62 , H01M10/0569 , H01M10/0525 , C01B32/21
CPC分类号： Y02E60/10 , C01B32/21 , H01M4/36 , H01M4/62 , H01M4/587 , H01M10/0525 , H01M10/0569
摘要： The present exemplary embodiments relate to a graphite-based negative electrode material, a method of manufacturing the same, a negative electrode including the same, and a lithium secondary battery including the same. The graphite-based negative electrode material according to an exemplary embodiment includes: a graphite oxide obtained by oxidizing a surface of first graphite, and a graphite coating including second graphite and low crystalline carbon positioned on a surface of the second graphite, wherein the graphite coating to the graphite oxide is 1/9 to 1/3.
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公开(公告)号：EP4418367A1
公开(公告)日：2024-08-21
申请号：EP22881276.4
申请日：2022-10-06
发明人： KO, Seung Hyun , LEE, Heon Young , CHOI, Hyun Ki , SONG, Hyeon Jun , KWON, Ki Min , JUNG, Myung Sun , KIM, Ga Eun , LEE, Jae Hyeon
IPC分类号： H01M4/587 , H01M4/36 , H01M4/62 , C01B32/205 , H01M10/0525
CPC分类号： Y02E60/10 , H01M4/36 , H01M10/0525 , C01B32/205 , H01M4/587 , H01M4/62
摘要： The present invention provides: a negative electrode active material having high discharge capacity, high charge output, and excellent discharge output characteristics; and a carbon material therefor.
A carbon material for a negative electrode active material according to an embodiment of the present invention provides a carbon material having the total fibrosity index (TFI) of 0.58 to 0.78.-
公开(公告)号：EP4250397A1
公开(公告)日：2023-09-27
申请号：EP21895109.3
申请日：2021-11-17
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , Posco Future M Co., Ltd
发明人： CHO, Moonkyu , LEE, Gang Ho , PARK, Sei Min , AN, Jung-Chul , YOU, Seung Jae , WOO, Jung Gyu , JO, Hyun-Chul , YOON, Jong Hoon
摘要： 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.
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