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公开(公告)号：US11837724B2
公开(公告)日：2023-12-05
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 , C01G53/04 , H01M4/505 , H01M10/052 , H01M4/02
CPC classification number: H01M4/525 , C01G53/04 , H01M4/505 , H01M10/052 , H01M2004/021
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：US11677076B2
公开(公告)日：2023-06-13
申请号：US17820475
申请日：2022-08-17
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Pilsang Yun , Wooyoung Yang , Jangsuk Hyun
CPC classification number: H01M4/525 , C01G53/006 , H01B1/06 , H01M4/366 , H01M10/0525 , C01P2004/03 , C01P2004/04 , C01P2006/40 , H01M2004/021
Abstract: A nickel-based active material precursor includes a particulate structure including a core portion, an intermediate layer portion on the core portion, and a shell portion on the intermediate layer portion, wherein the intermediate layer portion and the shell portion include primary particles radially arranged on the core portion, and each of the core portion and the intermediate layer portion includes a cation or anion different from that of the shell portion. The cation includes at least one selected from boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), tungsten (W), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminium (Al), and the anion includes at least one selected from phosphate (PO4), BO2, B4O7, B3O5, and F.
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公开(公告)号：US11569503B2
公开(公告)日：2023-01-31
申请号：US15654623
申请日：2017-07-19
Applicant: Samsung SDI Co., Ltd.
Inventor： Jongmin Kim , Jiyoon Kim , Pilsang Yun , Donggyu Chang , Kwanghwan Cho , Jangsuk Hyun , Jinhwa Kim
IPC: H01M4/525 , C01G53/00 , H01M4/485 , H01M10/052 , H01M4/02
Abstract: 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 comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.
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公开(公告)号：US20250026663A1
公开(公告)日：2025-01-23
申请号：US18766791
申请日：2024-07-09
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Pilsang Yun , Saehwan Kim , Do-Yu Kim , Yasutaka Kamata , Pilgyu Byeon
IPC: C01G53/00 , H01M10/0525
Abstract: A positive electrode active material, including a first positive electrode active material including secondary particles including a lithium nickel-cobalt-aluminum composite oxide, wherein the secondary particles include an agglomeration of a plurality of primary particles and at least a portion of the plurality of primary particles are oriented radially, and a coating layer on a surface of the secondary particles, the coating layer including ZrO2 and Li6Zr2O7; and a second positive electrode active material including secondary particles including a lithium nickel-cobalt-aluminum-manganese composite oxide, wherein the secondary particles include an agglomeration of a plurality of primary particles, and a coating layer on a surface of the secondary particles, the coating layer including ZrO2 and Li6Zr2O7, wherein an average particle diameter of the secondary particles of the first positive electrode active material is larger than an average particle diameter of the secondary particles of the second positive electrode active material.
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公开(公告)号：US20230282825A1
公开(公告)日：2023-09-07
申请号：US18316175
申请日：2023-05-11
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jongmin Kim , Jiyoon Kim , Pilsang Yun , Donggyu Chang , Kwanghwan Cho , Jangsuk Hyun , Jinhwa Kim
IPC: H01M4/525 , C01G53/00 , H01M4/485 , H01M10/052
CPC classification number: H01M4/525 , C01G53/50 , H01M4/485 , H01M10/052 , C01P2002/72 , C01P2002/85 , C01P2004/03 , C01P2004/50 , C01P2004/90 , C01P2006/12 , C01P2006/16 , C01P2006/40 , H01M2004/021
Abstract: 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 comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.
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Patent Agency Ranking
公开(公告)号：US11670754B2
公开(公告)日：2023-06-06
申请号：US17102332
申请日：2020-11-23
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Pilsang Yun , Jongmin Kim , Hyunbeom Kim , Sangin Park , Yongchan You
IPC: H01M4/131 , C01G53/00 , H01M10/0525 , H01M4/04 , H01M4/1391 , H01M4/36 , H01M4/525 , H01M4/505 , H01M4/02
CPC classification number: H01M4/131 , C01G53/006 , H01M4/0471 , H01M4/1391 , H01M4/364 , H01M4/505 , H01M4/525 , H01M10/0525 , C01P2004/50 , C01P2004/61 , C01P2004/62 , C01P2006/12 , H01M2004/028
Abstract: 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, wherein the first and second positive active materials may each include nickel-based positive active materials and the surface of the second positive active material is coated with a boron-containing compound. Further embodiments provide a method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material.
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公开(公告)号：US12068480B2
公开(公告)日：2024-08-20
申请号：US18310378
申请日：2023-05-01
Applicant: Samsung SDI Co., Ltd.
Inventor： Pilsang Yun , Jangsuk Hyun , Wooyoung Yang
IPC: H01M4/52 , C01G53/00 , H01M4/36 , H01M4/50 , H01M4/505 , H01M4/525 , H01M10/05 , H01M10/0525 , H01M4/02
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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公开(公告)号：US11843116B2
公开(公告)日：2023-12-12
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：US20230163298A1
公开(公告)日：2023-05-25
申请号：US18158274
申请日：2023-01-23
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jongmin Kim , Jiyoon Kim , Pilsang Yun , Donggyu Chang , Kwanghwan Cho , Jangsuk Hyun , Jinhwa Kim
IPC: H01M4/525 , C01G53/00 , H01M4/485 , H01M10/052
CPC classification number: H01M4/525 , C01G53/50 , H01M4/485 , H01M10/052 , C01P2002/72 , C01P2004/50 , C01P2006/12 , C01P2006/40 , C01P2006/16 , C01P2002/85 , C01P2004/03 , C01P2004/90 , H01M2004/021
Abstract: 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 comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.
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公开(公告)号：US10707485B2
公开(公告)日：2020-07-07
申请号：US15654648
申请日：2017-07-19
Applicant: Samsung SDI Co., Ltd.
Inventor： Jongmin Kim , Jiyoon Kim , Pilsang Yun , Donggyu Chang , Kwanghwan Cho , Jangsuk Hyun , Jinhwa Kim
Abstract: Provided are a nickel-based active material, a method of preparing the same, 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 including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.
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