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：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.

公开(公告)号：US20200152970A1

公开(公告)日：2020-05-14

申请号：US16630175

申请日：2018-07-10

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sangeun PARK ,  Jiyeon KWAK ,  Yeongap KIM ,  Youngugk KIM ,  Uisong DO ,  Yuntaek OH ,  Yongchan YOU ,  Changui JEONG ,  Inoh CHA ,  Hee Seon CHOI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  C04B35/628 ,  C04B35/626 ,  C04B35/52

Abstract: The present invention relates to a negative active material for a lithium secondary battery, a preparation method therefor, and a lithium secondary battery including the same. The negative electrode active material is a negative electrode material for a secondary battery, the negative electrode active material comprising a silicon-carbon composite comprising: a core comprising crystalline carbon and silicon particles; and an amorphous carbon-containing coating layer disposed on a surface of the core, wherein the negative electrode active material comprises: silicon oxide formed on a surface of the silicon particles; and an oxide of crystalline carbon, formed on a surface of the crystalline carbon, the average particle diameter (D50) of the silicon particles having a nanometer size, the proportion of O relative to Si in the silicon oxide is 30%-50%, and the proportion of O relative to C in the oxide of the crystalline carbon is 4%-10%.

公开(公告)号：US20180062172A1

公开(公告)日：2018-03-01

申请号：US15685334

申请日：2017-08-24

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sooyoun PARK ,  Changwook KIM ,  Yongchan YOU ,  Daehoe LEE ,  Sangwoo CHO

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/525 ,  C01G51/42 ,  C01G51/66 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/362 ,  H01M4/505 ,  H01M4/5815 ,  H01M4/5825 ,  H01M10/0525

Abstract: A positive active material, a positive electrode, and a lithium secondary battery, the positive active material including a lithium cobalt oxide compound, wherein the lithium cobalt oxide compound includes magnesium in a range of about 0.1 mol % to about 2 mol %, based on a total number of moles of transition metals in the lithium cobalt oxide compound, and a thickness of a lithium layer in the lithium cobalt oxide compound is in a range of about 2.62 Å to about 2.65 Å.

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：US20200373617A1

公开(公告)日：2020-11-26

申请号：US16638526

申请日：2018-08-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yunhee KIM ,  Kyoung Soo KIM ,  Yongchan YOU ,  Erang CHO ,  Seonju CHOI

IPC: H01M10/0567 ,  H01M4/38 ,  H01M4/587 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  C07F7/08 ,  C07F9/6574 ,  C07F5/04

Abstract: The present invention relates to a lithium secondary battery comprising: a negative electrode comprising a negative electrode active material containing Si or Sn, a positive electrode comprising a positive electrode active material, and a non-aqueous electrolyte. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; fluoroethylene carbonate; a first additive containing at least one compound among compounds resented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

公开(公告)号：US20190074546A1

公开(公告)日：2019-03-07

申请号：US16113254

申请日：2018-08-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yunhee KIM ,  Kyoung Soo KIM ,  Taejeong KIM ,  Dohyung PARK ,  Yongchan YOU ,  Erang CHO ,  Sun-Joo CHOI

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

Abstract: A rechargeable lithium battery including a negative electrode; a positive electrode including a positive active material; and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a non-aqueous organic solvent, a lithium salt, a first additive including a compound represented by one of Chemical Formulae 1 to 4 and a second additive including a compound represented by Chemical Formula 5 or Chemical Formula 6, or a combination thereof, the positive active material includes a compound that includes about 70 mol % or greater of Ni based on the total mole number of all metal elements except for Li,

公开(公告)号：US20160359166A1

公开(公告)日：2016-12-08

申请号：US15170049

申请日：2016-06-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungmin HAN ,  Jaehong LIM ,  Yongchan YOU

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/58

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/62

Abstract: A positive active material, a positive electrode and a lithium battery including the same, and a method of preparing the positive active material, the positive active material including a core, the core including a compound capable of reversibly intercalating and deintercalating lithium; and a lithium ion conductive ceramic compound on a surface of the core, the ceramic compound being doped with fluorine (F), sulfur (S), or a combination thereof.

Abstract translation: 正极活性物质，正极和包含该正极活性物质的锂电池以及制备正极活性物质的方法，所述正极活性物质包含核，所述核包含能够可逆地嵌入和脱嵌锂的化合物; 和在芯的表面上的锂离子传导性陶瓷化合物，所述陶瓷化合物掺杂有氟（F），硫（S）或其组合。

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.