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公开(公告)号：US20210234165A1
公开(公告)日：2021-07-29
申请号：US17229373
申请日：2021-04-13
发明人： Pilsang YUN , Jinhwa KIM , Hyunbeom KIM , Jaehyun SHIM , Wooyoung YANG
摘要： Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing the nickel-based active material.
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12.发明申请公开(公告)号：US20200350582A1
公开(公告)日：2020-11-05
申请号：US16962635
申请日：2019-01-29
发明人： Jongmin KIM , Soohyeon KIM , Jinhwa KIM , Pilsang YUN
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505
摘要： Disclosed are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle has a predetermined arrangement structure in which (003) surface of primary particles are aligned to be in a vertical direction with respect to a tangent line at a point (P) at which the (003) surface of the primary particles meet a surface of the secondary particle.
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公开(公告)号：US20200083530A1
公开(公告)日：2020-03-12
申请号：US16462887
申请日：2017-12-04
发明人： Pilsang YUN , Jinhwa KIM , Hyunbeom KIM , Jaehyun SHIM , Wooyoung YANG
IPC分类号： H01M4/525 , H01M4/505 , H01M10/0525
摘要： Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing the nickel-based active material.
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公开(公告)号：US20180159128A1
公开(公告)日：2018-06-07
申请号：US15829548
申请日：2017-12-01
发明人： Jinhwa KIM , Hyunbeom KIM , Jongmin KIM , Wooyoung YANG , Donggyu CHANG , Jangsuk HYUN
IPC分类号： H01M4/525 , H01M10/052 , H01M4/04
CPC分类号： H01M4/525 , C01G53/006 , C01G53/42 , C01G53/50 , C01P2004/03 , C01P2004/20 , C01P2004/22 , C01P2004/24 , C01P2004/32 , C01P2004/50 , C01P2004/51 , C01P2004/54 , C01P2004/61 , C01P2006/16 , C01P2006/40 , H01M4/0471 , H01M4/505 , H01M10/052 , H01M2004/021 , H01M2004/028
摘要： Provided are a nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.
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公开(公告)号：US20180076454A1
公开(公告)日：2018-03-15
申请号：US15702048
申请日：2017-09-12
发明人： Junseok PARK , Seonyoung KWON , Jihyun KIM , Jinhwa KIM , Dohyung PARK , Daehoe LEE
IPC分类号： H01M4/525 , H01M10/052 , H01M4/04
CPC分类号： H01M4/525 , H01M4/0497 , H01M4/52 , H01M10/052 , H01M10/0525 , H01M2004/028
摘要： A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.
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16.发明公开公开(公告)号：US20240222602A1
公开(公告)日：2024-07-04
申请号：US18603865
申请日：2024-03-13
发明人： Jungsue JANG , Donghyun KIL , Minhan KIM , Jinyoung KIM , Jinhwa KIM , Jihyun SEOG , Jaeha SHIM , Kiyong AHN , Donggyu CHANG , Youngjoo CHAE , Aram CHOI , Jeuk HA
CPC分类号： H01M4/364 , C01G53/40 , C01G53/44 , H01M4/0471 , H01M4/366 , H01M4/505 , H01M4/525 , H01M2004/021 , H01M2004/028
摘要： Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.
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公开(公告)号：US20240204186A1
公开(公告)日：2024-06-20
申请号：US18480408
申请日：2023-10-03
发明人： Jinhwa KIM , Minhan KIM , Jihyun SEOG , Youngjoo CHAE
IPC分类号： H01M4/525 , H01M4/36 , H01M10/0525
CPC分类号： H01M4/525 , H01M4/366 , H01M10/0525 , H01M2004/028
摘要： A positive active material includes a first positive active material in a secondary particle form in which a plurality of primary particles are aggregated, and a second positive active material in a single particle form, wherein each of the first positive active material and the second positive active material includes a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 70 mol % relative to the total elements excluding lithium and excluding oxygen, the first positive active material includes a coating portion in a form of a film on the surface of the secondary particle, the second positive active material includes a coating portion in a form of a film on the surface of the single particle, the coating portion of the first positive active material and the coating portion of the second positive active material includes lithium cobalt oxide and cobalt oxyhydroxide, respectively.
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公开(公告)号：US20240178373A1
公开(公告)日：2024-05-30
申请号：US18354414
申请日：2023-07-18
发明人： Youngjoo CHAE , Minhan KIM , Jinhwa KIM , Jihyun SEOG
IPC分类号： H01M4/36 , H01M4/04 , H01M4/525 , H01M10/052
CPC分类号： H01M4/366 , H01M4/0471 , H01M4/525 , H01M10/052 , H01M2004/028
摘要： Disclosed are a positive active material for a rechargeable lithium battery, a preparation method thereof, and a rechargeable lithium battery including the same. The positive active material for a rechargeable lithium battery includes a first positive active material including a lithium nickel-based composite oxide and including a secondary particle in which a plurality of primary particles are aggregated and a cobalt coating portion on a surface of the secondary particle, and a second positive active material including a lithium nickel-based composite oxide and including a single particle and a cobalt coating portion on a surface of the single particle, wherein a cobalt content (at %) based on the total amount of nickel and cobalt in the cobalt coating portion of the first positive active material is about 1.45 times to about 1.60 times a cobalt content (at %).
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公开(公告)号：US20210135217A1
公开(公告)日：2021-05-06
申请号：US17144381
申请日：2021-01-08
发明人： Junseok PARK , Seonyoung KWON , Jihyun KIM , Jinhwa KIM , Dohyung PARK , Daehoe LEE
IPC分类号： H01M4/525 , H01M10/052 , H01M4/04 , H01M10/0525 , H01M4/52
摘要： A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.
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公开(公告)号：US20210043920A1
公开(公告)日：2021-02-11
申请号：US17073124
申请日：2020-10-16
发明人： Jongmin KIM , Jiyoon KIM , Jinhwa KIM
IPC分类号： H01M4/131 , H01M4/525 , H01M10/0525 , H01M4/04 , H01M4/505 , H01M4/1391 , H01M4/36
摘要： A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.
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