公开(公告)号：US20230178725A1

公开(公告)日：2023-06-08

申请号：US18060684

申请日：2022-12-01

Applicant: Samsung SDI Co., Ltd.

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

IPC: H01M4/525 ,  H01M50/46 ,  H01M10/0569 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/44 ,  H01M50/578

CPC classification number: H01M4/525 ,  H01M50/46 ,  H01M10/0569 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/445 ,  H01M10/448 ,  H01M50/578 ,  H01M2004/028

Abstract: A rechargeable lithium battery includes a positive electrode including a positive electrode active material including a secondary particle in which a plurality of primary particles are aggregated, the secondary particle having at least a portion of the primary particles radially arranged and comprising a lithium nickel-based composite oxide, and a boron coating layer on the surface of the secondary particle and including lithium borate; a negative electrode; a separator between the positive electrode and the negative electrode; an electrolyte including vinylene carbonate; and a case containing the positive electrode, the negative electrode, the separator, and the electrolyte.

公开(公告)号：US20180083255A1

公开(公告)日：2018-03-22

申请号：US15708363

申请日：2017-09-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sungyong KIM ,  Eun-Young GOH ,  Sangin PARK ,  Jinseon SHIN ,  Jongki LEE ,  Jiwoon LEE ,  Jinhyon LEE

IPC: H01M2/26 ,  H01M10/04

Abstract: A rechargeable battery includes an electrode assembly and first and second lead tabs. The electrode assembly includes at least one separator between a first electrode and a second electrode. The first and second lead tabs are respectively connected to the first and second electrodes and are drawn out of a case. The electrode assembly includes a first assembly having a first length in a first direction and a second assembly having a second length in the first direction shorter than the first length. The first assembly includes at least one first uncoated tab protruding from the first electrode and connected to the first lead tab, and at least one second uncoated tab protruding from the second electrode and connected to the second lead tab. The second assembly includes the at least one second uncoated tab.

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：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：US20230098411A1

公开(公告)日：2023-03-30

申请号：US17936544

申请日：2022-09-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jongmin KIM ,  Hyunbeom KIM ,  Sangin PARK ,  Hanseul LEE

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/04

Abstract: Provided are a positive electrode active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same, the positive electrode active material for a rechargeable lithium battery including a secondary particle in which a plurality of primary particles including a lithium nickel-based composite oxide are aggregated, wherein at least a portion of the primary particles are arranged radially, a boron coating layer on the surface of the secondary particles and containing lithium borate, and a boron-doped layer inside the primary particle exposed to the surface of the secondary particle.

公开(公告)号：US20220293913A1

公开(公告)日：2022-09-15

申请号：US17578220

申请日：2022-01-18

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525

Abstract: A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle formed by aggregation of a plurality of primary particles, wherein at least a portion of the primary particles have a radially arranged structure, and a second positive active material including a secondary particle formed by aggregation of a plurality of primary particles, wherein the first positive active material and the second positive active material are both (e.g., simultaneously) nickel-based positive active materials, a particle diameter of the secondary particle of the first positive active material is larger than a particle diameter of the secondary particles\ of the second positive active material, and the second positive active material is coated with a boron compound.