公开(公告)号：US20240120466A1

公开(公告)日：2024-04-11

申请号：US18012458

申请日：2021-10-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Jongmin KIM ,  Jongmin WON ,  Youngugk KIM ,  Jaemyung KIM ,  Jaehou NAH ,  Dae-Hyeok LEE ,  Jungho LEE

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

Abstract: Provided is that a negative active material for a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the same, and a rechargeable lithium including the same, and the negative active material for a rechargeable lithium battery includes an agglomerated product of silicon-based materials comprising a silicon particle, a lithium silicate positioned on a surface of the silicon particle, a first amorphous carbon surrounded on the silicon particle and the lithium silicate; and a second amorphous carbon positioned on the agglomerated product.

公开(公告)号：US20220328835A1

公开(公告)日：2022-10-13

申请号：US17709782

申请日：2022-03-31

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsoo KIM ,  Byungjin CHOI ,  Sukgi HONG ,  Jongmin KIM ,  Jeongho LEE ,  Sangil HAN

IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/38

Abstract: A positive active material for an all-solid secondary battery, an all-solid secondary battery including the same, and a method of manufacturing the positive active material for an all-solid secondary battery, the positive 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, the buffer layer includes a copper compound represented by Formula 2, LiaNibM1cO2-eAe   LixCuyXz.  

公开(公告)号：US20200152981A1

公开(公告)日：2020-05-14

申请号：US16682907

申请日：2019-11-13

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Donghyun KIL ,  Wooyoung YANG ,  Seung Joon LEE

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

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a lithium manganese composite oxide having at least two crystal lattice structures, wherein the secondary particle has a regular array structure in which (003) planes of the primary particles are oriented in a vertical direction with respect to the surface of the secondary particle.

公开(公告)号：US20190326596A1

公开(公告)日：2019-10-24

申请号：US16462912

申请日：2017-12-04

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

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：US20220029154A1

公开(公告)日：2022-01-27

申请号：US17494686

申请日：2021-10-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donggyu CHANG ,  Jongmin KIM

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62

Abstract: Provided are a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including a cathode including the cathode active material. The cathode active material includes: a secondary particle of a nickel-based active material, wherein the secondary particle including a plurality of primary particles, wherein the secondary particle includes a radial arrangement structure and an irregular porous structure, the radial arrangement structure is located closer to a surface of the secondary particle than the irregular porous structure, and a lithium fluoride-based compound is present on a surface of the nickel-based active material.

公开(公告)号：US20210043920A1

公开(公告)日：2021-02-11

申请号：US17073124

申请日：2020-10-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Jiyoon KIM ,  Jinhwa KIM

IPC: H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/505 ,  H01M4/1391 ,  H01M4/36

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. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.

公开(公告)号：US20210202941A1

公开(公告)日：2021-07-01

申请号：US17183295

申请日：2021-02-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Doyu KIM ,  Donggyu CHANG ,  Jongmin KIM

IPC: H01M4/525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/36 ,  H01M10/0525 ,  C01G53/04 ,  C01G53/00

Abstract: A nickel (Ni)-based active material for a lithium secondary battery, a preparing method thereof, and a lithium secondary battery including a positive electrode including the same. The Ni-based active material includes a secondary particle including a plurality of particulate structures, wherein each of the particulate structures includes a porous core portion and a shell portion including primary particles radially arranged on the porous core portion, and lithium phosphate is in the porous core portion, between the plurality of primary particles, and on the surface of the secondary particle. The Ni-based active material includes a porous inner portion including the porous core portion; and an outer portion comprising the the shell portion, and the Ni-based active material includes the porous inner portion having closed pores and the outer portion, wherein the porous inner portion has a density less than that of the outer portion, and the Ni-based active material has a net density of 4.7 g/cc or less.

公开(公告)号：US20210083287A1

公开(公告)日：2021-03-18

申请号：US17102412

申请日：2020-11-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong AHN ,  Jongmin KIM

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/00

Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material for a rechargeable lithium battery that includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least a portion of the primary particles has a radial arrangement structure, and a second positive active material having a monolith structure, wherein the first and second positive active materials each include a nickel-based positive active material, and an X-ray diffraction (XRD) peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. Further embodiments provide a method of manufacturing the positive electrode for rechargeable lithium battery, and a rechargeable lithium battery including the same.

公开(公告)号：US20210074998A1

公开(公告)日：2021-03-11

申请号：US17102332

申请日：2020-11-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Pilsang YUN ,  Jongmin KIM

IPC: H01M4/131 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525

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.

公开(公告)号：US20210020936A1

公开(公告)日：2021-01-21

申请号：US17039739

申请日：2020-09-30

Applicant: Samsung SDI Co., Ltd.

Inventor： Jinhwa KIM ,  Hyunbeom KIM ,  Jongmin KIM ,  Wooyoung YANG ,  Donggyu CHANG ,  Jangsuk HYUN

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  C01G53/00

Abstract: Provided are 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 includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.