-
公开(公告)号：US20220140338A1
公开(公告)日：2022-05-05
申请号：US17452286
申请日：2021-10-26
Applicant: Samsung SDI Co., Ltd.
Inventor： Kiyong Ahn , Taehee Kwak , Minkyu Kim , Naoyuki Hase , Jeuk Ha , Seonyoung Kwon , Yumi Song , Eunok Oh
IPC: H01M4/525 , H01M10/0525
Abstract: A nickel-based active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode, a negative electrode, and an electrolyte between the positive electrode and the negative electrode are provided. The nickel-based active material includes 80 mol % or more of nickel with respect to the metal elements excluding lithium, and the nickel-based active material includes: i) large secondary particles having a size in a range of 10 μm to 20 μm and including aggregates of primary particles having a size of 1 μm or less; ii) large crystal particles including primary particles having a size in a range of 1 μm to 5 μm; and iii) small secondary particles having a size in a range of 1 μm to 7 μm and including aggregates of primary particles having a size of 1 μm or less.
-
Patent Agency Ranking
公开(公告)号：US20250132332A1
公开(公告)日：2025-04-24
申请号：US19006085
申请日：2024-12-30
Applicant: Samsung SDI Co., Ltd.
Inventor： Kiyong Ahn , Taehee Kwak , Minkyu Kim , Naoyuki Hase , Jeuk Ha , Seonyoung Kwon , Yumi Song , Eunok Oh
IPC: H01M4/525 , H01M4/02 , H01M10/0525
Abstract: A nickel-based active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode, a negative electrode, and an electrolyte between the positive electrode and the negative electrode are provided. The nickel-based active material includes 80 mol % or more of nickel with respect to the metal elements excluding lithium, and the nickel-based active material includes: i) large secondary particles having a size in a range of 10 μm to 20 μm and including aggregates of primary particles having a size of 1 μm or less; ii) large crystal particles including primary particles having a size in a range of 1 μm to 5 μm; and iii) small secondary particles having a size in a range of 1 μm to 7 μm and including aggregates of primary particles having a size of 1 μm or less.
-
公开(公告)号：US12300807B2
公开(公告)日：2025-05-13
申请号：US17657316
申请日：2022-03-30
Applicant: Samsung SDI Co., Ltd.
Inventor： Jungsue Jang , Donghyun Kil , Minhan Kim , Jinyoung Kim , Jinhwa Kim , Jihyun Seog , Jaeha Shim , Kiyong Ahn , Donggyu Chang , Youngjoo Chae , Aram Choi , Jeuk Ha
Abstract: 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 crystal 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.
-
公开(公告)号：US12224426B2
公开(公告)日：2025-02-11
申请号：US18329199
申请日：2023-06-05
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong Ahn , Taehee Kwak , Jeuk Ha , Seonyoung Kwon , Yumi Song , Eunok Oh , Soonrewl Lee , Naoyuki Hase
IPC: H01M4/36 , C01G53/00 , H01M4/02 , H01M4/525 , H01M10/0525
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
-
公开(公告)号：US12062786B2
公开(公告)日：2024-08-13
申请号：US16940637
申请日：2020-07-28
Applicant: Samsung SDI Co., Ltd.
IPC: H01M4/525 , H01M4/505 , H01M10/0525 , H01M10/44 , H01M4/02
CPC classification number: H01M4/525 , H01M4/505 , H01M10/0525 , H01M10/44 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, the second compound having a smaller particle size than that of the first compound, wherein cation mixing in the surface portion of the positive active material is less than or equal to about 7.5%, cation mixing in the bulk of the positive active material is less than or equal to about 3%, a residual lithium content on the surface of the positive active material is less than or equal to about 3,000 ppm, and the first compound and the second compound each independently include 90 at % to about 98 at % of Ni with respect to the metals excluding Li.
Lia1Nix1Coy1M11−x1−y1O2, Chemical Formula 1
Lia2Nix2Coy2M21−x2−y2O2. Chemical Formula 2-
公开(公告)号：US11728473B2
公开(公告)日：2023-08-15
申请号：US17186502
申请日：2021-02-26
Applicant: Samsung SDI Co., Ltd.
Inventor： Kiyong Ahn , Taehee Kwak , Jeuk Ha , Seonyoung Kwon , Yumi Song , Eunok Oh , Soonrewl Lee , Naoyuki Hase
IPC: H01M4/36 , C01G53/00 , H01M4/525 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/364 , C01G53/42 , H01M4/525 , H01M10/0525 , C01P2002/52 , C01P2002/72 , C01P2002/74 , C01P2004/03 , C01P2004/50 , C01P2004/53 , C01P2004/61 , C01P2006/10 , C01P2006/40 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
-
-
-
-
-
Search Results
6
records
(took 0.013 seconds)
