公开(公告)号：US20230178864A1

公开(公告)日：2023-06-08

申请号：US18060791

申请日：2022-12-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Pilsang YUN ,  Do-Yu KIM ,  Hyunbeom KIM ,  Sangin PARK ,  Yongchan YOU

IPC: H01M50/578 ,  H01M10/052 ,  H01M10/0567 ,  H01M50/124 ,  H01M50/117 ,  H01M50/164 ,  H01M50/157 ,  H01M4/525 ,  H01M4/36 ,  H01M4/58

CPC classification number: H01M50/578 ,  H01M4/366 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/052 ,  H01M10/0567 ,  H01M50/117 ,  H01M50/157 ,  H01M50/164 ,  H01M50/1243 ,  H01M2004/028 ,  H01M2200/20

Abstract: A rechargeable lithium battery includes: a positive electrode; a negative electrode; a separator between the positive electrode and the negative electrode; an electrolyte including vinylene carbonate; and a case accommodating the positive electrode, the negative electrode, the separator, and the electrolyte. At least in a portion of an interior of the case has a coating portion containing lithium borate particles.

公开(公告)号：US20220255072A1

公开(公告)日：2022-08-11

申请号：US17454209

申请日：2021-11-09

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Hyunbeom KIM ,  Sangin PARK ,  Yongchan YOU

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/04

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal composite oxide, wherein the positive active material includes secondary particles in which a plurality of primary particles are aggregated, a first boron coating portion present on the outer surfaces of the secondary particles, and a second boron coating portion present on surfaces of the primary particles inside the secondary particles, and a weight of the first boron coating portion is greater than a weight of the second boron coating portion.

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.

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

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/36 ,  C01G53/04 ,  C01G53/00

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.

公开(公告)号：US20200350582A1

公开(公告)日：2020-11-05

申请号：US16962635

申请日：2019-01-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Soohyeon KIM ,  Jinhwa KIM ,  Pilsang YUN

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505

Abstract: 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.

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.

公开(公告)号：US20190386298A1

公开(公告)日：2019-12-19

申请号：US16463824

申请日：2017-12-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Hyunbeom KIM ,  Hyundeok LEE ,  Minah CHA ,  Wooyoung YANG ,  Jangsuk HYUN

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G53/04

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including: a first porous core; a second core located on the first porous core and having a higher density than that of the first porous core, a shell located on the second core; and having a radial arrangement structure, wherein an amount of nickel included in the first porous core is greater than or equal to an amount of nickel included in the second core, and the amount of nickel included in the second core is greater than an amount of nickel included in the shell, a method of producing the nickel-based active precursor, a nickel-based active material for a lithium secondary battery, obtained from the nickel-based active precursor, and a lithium secondary battery including a cathode containing the nickel-based active material.

公开(公告)号：US20250158053A1

公开(公告)日：2025-05-15

申请号：US19022866

申请日：2025-01-15

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Hyunbeom KIM ,  Sangin PARK ,  Yongchan YOU

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal composite oxide, wherein the positive active material includes secondary particles in which a plurality of primary particles are aggregated, a first boron coating portion present on the outer surfaces of the secondary particles, and a second boron coating portion present on surfaces of the primary particles inside the secondary particles, and a weight of the first boron coating portion is greater than a weight of the second boron coating portion.

公开(公告)号：US20250140848A1

公开(公告)日：2025-05-01

申请号：US19004732

申请日：2024-12-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Byungjin CHOI ,  Suk-Gi HONG ,  Youngsoo KIM ,  Donghee YEON ,  Pilsang YUN ,  Sangil HAN

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/38 ,  H01M4/40 ,  H01M4/62 ,  H01M10/0562

Abstract: A composite cathode active material for an all-solid-state battery including a sulfide solid electrolyte, a preparation method thereof, a cathode layer for an all-solid-state battery, and an all-solid-state battery including the cathode layer, the composite cathode active material including a secondary particle including a plurality of primary particles; and a buffer layer on a surface of the secondary particle, wherein the secondary particle includes a nickel lithium transition metal oxide represented by Formula 1 (LiaNi1-bMbO2), the buffer layer includes a first buffer layer adjacent to a surface of the secondary particle and including an oxide represented by Formula 2 (LixAyOz); and a second buffer layer including an oxide represented by Formula 3 (LixEyOz).

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

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525

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.