公开(公告)号：US11342586B2

公开(公告)日：2022-05-24

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 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/505 ,  H01M4/02

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：US11133501B2

公开(公告)日：2021-09-28

申请号：US15337541

申请日：2016-10-28

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sanghoon Kim ,  Kwanghwan Cho ,  Eunsung Lee ,  Dohyung Park ,  ILseok Kim ,  Sol Choi

IPC: H01M4/131 ,  H01M4/525 ,  C01G53/00 ,  H01M50/107 ,  H01M10/0525

Abstract: A composite positive active material includes a lithium nickel cobalt aluminum composite oxide. A full width at half maximum (FWHM) of a peak of a (104) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less and an FWHM of a peak of a (108) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less, the peaks being obtained by X-ray diffraction analysis using a CuKα X-ray. A method of preparing the composite positive active material, and a lithium secondary battery including a positive electrode including the composite positive active material are disclosed.

公开(公告)号：US20160156027A1

公开(公告)日：2016-06-02

申请号：US14730114

申请日：2015-06-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Jeonghoon Kim ,  Yumi Song ,  Mingzi Hong ,  Dohyung Park

IPC: H01M4/36 ,  H01M10/0587 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode includes a current collector, and a positive active material layer on at least one surface of the current collector and including a positive active material. The positive active material layer includes a first portion adjacent to the current collector, and a second portion adjacent to an outer surface of the positive active material layer. Since the second portion includes a metal component, structural stability of the positive electrode may be improved. Accordingly, lifespan characteristics of a lithium battery including the positive electrode may be improved.

Abstract translation: 正极包括集电体和在集电体的至少一个表面上的正极活性物质层，并且包含正极活性物质。 正极活性物质层包括与集电体相邻的第一部分和与正极活性物质层的外表面相邻的第二部分。 由于第二部分包括金属成分，所以可以提高正极的结构稳定性。 因此，可以提高包括正极的锂电池的寿命特性。

公开(公告)号：US11038169B2

公开(公告)日：2021-06-15

申请号：US16333195

申请日：2017-09-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok Park ,  Seonyoung Kwon ,  Youngki Kim ,  Jihyun Kim ,  Dohyung Park ,  Sooyoun Park

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  H01M4/02 ,  C01G51/04

Abstract: Provided are a cobalt oxide (Co3O4) for a lithium secondary battery, having an average particle diameter (D50) of about 14 μm to about 19 μm and a tap density of about 2.1 g/cc to about 2.9 g/cc, a method of preparing the cobalt oxide, a lithium cobalt oxide for a lithium secondary battery prepared from the cobalt oxide, and a lithium secondary battery including a cathode including the lithium cobalt oxide.

公开(公告)号：US10826064B2

公开(公告)日：2020-11-03

申请号：US16327244

申请日：2017-09-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Daehoe Lee ,  Dongjin Kim ,  Minhan Kim ,  Ilseok Kim ,  Dohyung Park ,  Junseok Park ,  Okgyu Lim ,  Gyuran Jeon ,  Jeonjin Choi

IPC: H01M4/00 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  C01G53/00 ,  H01M4/02

Abstract: The present disclosure relates to a cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery comprising same, the cathode active material comprising a lithium-nickel compound oxide, wherein a c-axis lattice parameter of a unit lattice of the lithium-nickel compound oxide satisfies Formula 1: 14.1720 ÅA≤c≤14.1750 ÅA  [Formula 1]

公开(公告)号：US10665861B2

公开(公告)日：2020-05-26

申请号：US15795550

申请日：2017-10-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dongjin Kim ,  Minhan Kim ,  Dohyung Park ,  Young Jin Park ,  Kyounghyun Kim ,  Ilseok Kim

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/1391 ,  C01G53/00 ,  H01M4/131 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal oxide represented by LixNi1-yMyO2 and a lithium-containing oxide on a surface of the lithium nickel-based metal oxide. In the formula LixNi1-yMyO2, M is one or more of Co, Mn, Al, Mg, Ti, Zr, or a combination thereof, 0

公开(公告)号：US10892484B2

公开(公告)日：2021-01-12

申请号：US15702048

申请日：2017-09-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok Park ,  Seonyoung Kwon ,  Jihyun Kim ,  Jinhwa Kim ,  Dohyung Park ,  Daehoe Lee

IPC: H01M4/13 ,  H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/52 ,  H01M4/02

Abstract: A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.

公开(公告)号：US20190027739A1

公开(公告)日：2019-01-24

申请号：US16044399

申请日：2018-07-24

Applicant: Samsung SDI Co., Ltd.

Inventor： Minhan Kim ,  Dongjin Kim ,  Ilseok Kim ,  Dohyung Park ,  Junseok Park ,  Daehoe Lee ,  Okgyu Lim ,  Gyuran Jeon ,  Jeonjin Choi

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

Abstract: A positive active material for a rechargeable lithium battery includes a core including a compound represented by Chemical Formula 1 and a functional layer on a surface of the core. The functional layer has one kind of a crystal structure that is different from the crystal structure of the core. The positive active material includes about 100 ppm to about 400 ppm of sulfur: LiaNixCoyMezO2,  Chemical Formula 1 wherein in Chemical Formula 1, 0.9≤a≤1.1, 0.5≤x≤0.93, 0

公开(公告)号：US10090523B2

公开(公告)日：2018-10-02

申请号：US14701328

申请日：2015-04-30

Applicant: Samsung SDI Co., Ltd

Inventor： Jihyun Kim ,  Dohyung Park ,  Seonyoung Kwon ,  Juhyeong Han ,  Jinhwa Kim ,  Minhan Kim ,  Kyounghyun Kim

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/052 ,  H01M4/02

Abstract: Provided is a lithium cobalt composite oxide for a lithium secondary battery represented by Formula 1 below and having a polycrystalline state, a method of preparing the same, a positive electrode for a lithium battery including the lithium cobalt composite oxide, and a lithium secondary battery including a positive electrode, which includes the lithium cobalt composite oxide. LiaCobOc  Formula 1 In Formula 1, a is an integer from 0.9 to 1.1, b is an integer from 0.980 to 1.0000, and c is an integer from 1.9 to 2.1. Also included is a method of manufacture therefor.

公开(公告)号：US09991513B2

公开(公告)日：2018-06-05

申请号：US15002057

申请日：2016-01-20

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jeonjin Choi ,  Minhan Kim ,  Joong-Ho Moon ,  Haneol Park ,  Kyounghyun Kim ,  Dohyung Park ,  Dongjin Kim ,  Gyuran Jeon ,  Sun-Ho Kang

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  C01G53/00 ,  H01M10/052 ,  H01M4/04

CPC classification number: H01M4/505 ,  C01G53/50 ,  C01P2002/72 ,  C01P2004/54 ,  C01P2006/40 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/366 ,  H01M4/525 ,  H01M10/052

Abstract: A positive active material represented by Formula 1 and a lithium secondary battery having a positive electrode that includes the positive active material are provided: Li1-aAaNixCoyMn1-x-yO2  Formula 1 wherein, in Formula 1, A is an alkali metal; 0.0025≤a≤0.02; 0.0