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公开(公告)号：US20190393502A1
公开(公告)日：2019-12-26
申请号：US16452282
申请日：2019-06-25
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jangsuk HYUN , Wooyoung YANG
IPC: H01M4/525 , H01M4/36 , H01M4/505 , H01M10/0525
Abstract: A nickel-based active material precursor for a lithium secondary battery includes: a secondary particle including a plurality of particulate structures, wherein each particulate structure includes a porous core portion and a shell portion, the shell portion including primary particles radially arranged on the porous core portion; and the secondary particle has a plurality of radial centers. When the nickel-based active material precursor is used, a nickel-based positive active material having a short lithium ion diffusion distance, in which intercalation and deintercalation of lithium are facilitated, may be obtained. A lithium secondary battery manufactured using the positive active material may exhibit enhanced lithium availability, and may exhibit enhanced capacity and lifespan due to suppression of crack formation in the active material during charging and discharging.
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公开(公告)号：US20240363852A1
公开(公告)日：2024-10-31
申请号：US18770550
申请日：2024-07-11
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jangsuk HYUN , Wooyoung YANG
CPC classification number: H01M4/525 , C01G53/006 , H01M4/366 , H01M4/505 , H01M10/0525 , C01P2004/50 , H01M2004/028
Abstract: A nickel-based active material precursor for a lithium secondary battery includes: a secondary particle including a plurality of particulate structures, wherein each particulate structure includes a porous core portion and a shell portion, the shell portion including primary particles radially arranged on the porous core portion; and the secondary particle has a plurality of radial centers. When the nickel-based active material precursor is used, a nickel-based positive active material having a short lithium ion diffusion distance, in which intercalation and deintercalation of lithium are facilitated, may be obtained. A lithium secondary battery manufactured using the positive active material may exhibit enhanced lithium availability, and may exhibit enhanced capacity and lifespan due to suppression of crack formation in the active material during charging and discharging.
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3.发明公开公开(公告)号：US20240213465A1
公开(公告)日：2024-06-27
申请号：US18366545
申请日：2023-08-07
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jinhwa KIM , Minhan KIM , Jihyun SEOG , Youngjoo CHAE , Soonrewl LEE , Wooyoung YANG , Ickkyu CHOI , Jongmin KIM , Jongsan IM
CPC classification number: H01M4/525 , C01G53/50 , H01M4/362 , H01M4/505 , H01M4/8882 , H01M10/0525 , H01M10/44 , C01P2006/40 , H01M2004/028 , H01M2220/00
Abstract: Disclosed are a positive active material for a rechargeable lithium battery, 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 secondary particle including lithium nickel-based composite oxide wherein in the secondary particle, a plurality of primary particles are aggregated and zirconium on the surface of the secondary particle, and a second positive active material including a single particle including lithium nickel-based composite oxide and zirconium on the surface of the single particle, wherein a ratio of a Zr content (at %) relative to all elements on the surface of the single particle of the second positive active material to a Zr content (at %) to all elements on the surface of the secondary particle of the first positive active material is about 1.5 to about 3.0.
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公开(公告)号：US20200161643A1
公开(公告)日：2020-05-21
申请号：US16684057
申请日：2019-11-14
Applicant: Samsung SDI Co., Ltd.
Inventor： Donggyu CHANG , Donghyun KIL , Jongmin KIM , Wooyoung YANG
Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a coating layer including a fiber-shaped lithium manganese composite oxide, wherein the fiber-shaped lithium manganese composite oxide is attached to the surface of the lithium nickel-based composite oxide.
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公开(公告)号：US20200152981A1
公开(公告)日：2020-05-14
申请号：US16682907
申请日：2019-11-13
Applicant: Samsung SDI Co., Ltd.
Inventor： Jongmin KIM , Donghyun KIL , Wooyoung YANG , Seung Joon LEE
IPC: H01M4/525 , H01M4/505 , H01M10/0525
Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a lithium manganese composite oxide having at least two crystal lattice structures, wherein the secondary particle has a regular array structure in which (003) planes of the primary particles are oriented in a vertical direction with respect to the surface of the secondary particle.
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Patent Agency Ranking
公开(公告)号：US20200058937A1
公开(公告)日：2020-02-20
申请号：US16539768
申请日：2019-08-13
Applicant: Samsung SDI Co., Ltd.
Inventor： Doyu KIM , Wooyoung YANG
IPC: H01M4/525 , H01M4/505 , H01M4/36 , H01M10/0525
Abstract: Provided is a nickel-based active material precursor for a lithium secondary battery, including: a secondary particle including a plurality of particulate structures, wherein each of the particulate structures includes a porous core portion and a shell portion including primary particles radially arranged on the porous core portion, and in 50% or more of the primary particles constituting a surface of the secondary particle, a major axis of each of the primary particles is aligned along a normal direction of the surface of the secondary particle. When the nickel-based active material precursor for a lithium secondary battery is used, it is possible to obtain a nickel-based active material which intercalates and deintercalates lithium and has a short diffusion distance of lithium ions.
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公开(公告)号：US20190326596A1
公开(公告)日：2019-10-24
申请号：US16462912
申请日：2017-12-04
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jongmin KIM , Hyunbeom KIM , Wooyoung YANG , Jangsuk HYUN
IPC: H01M4/525 , C01G53/04 , H01M4/505 , H01M10/052
Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a shell on the porous core, the shell having a radial arrangement structure with a higher density than that of the porous core, wherein the nickel-based active material precursor have a size of 9 μm to 14 μm, and the porous core has a volume of about 5% by volume to about 20% by volume based on the total volume of the nickel-based active material precursor; a method of preparing the nickel-based active material precursor; a nickel-based active material produced from the nickel-based active material; and a lithium secondary battery including a cathode containing the nickel-based active material.
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公开(公告)号：US20220037662A1
公开(公告)日：2022-02-03
申请号：US17499590
申请日：2021-10-12
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jongmin KIM , Hyunbeom KIM , Wooyoung YANG , Jangsuk HYUN
IPC: H01M4/525 , H01M4/131 , H01M10/0525 , H01M4/505 , H01M4/36
Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a shell on the porous core, the shell having a radial arrangement structure with a higher density than that of the porous core, wherein the nickel-based active material precursor have a size of 9 μm to 14 μm, and the porous core has a volume of about 5% by volume to about 20% by volume based on the total volume of the nickel-based active material precursor; a method of preparing the nickel-based active material precursor; a nickel-based active material produced from the nickel-based active material; and a lithium secondary battery including a cathode containing the nickel-based active material.
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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
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jinhwa KIM , Hyunbeom KIM , Jaehyun SHIM , Wooyoung YANG
Abstract: 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：US20200083530A1
公开(公告)日：2020-03-12
申请号：US16462887
申请日：2017-12-04
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang YUN , Jinhwa KIM , Hyunbeom KIM , Jaehyun SHIM , Wooyoung YANG
IPC: H01M4/525 , H01M4/505 , H01M10/0525
Abstract: 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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