公开(公告)号：US20230146100A1

公开(公告)日：2023-05-11

申请号：US17909744

申请日：2021-02-17

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dahyun KIM ,  Sujeong KOH ,  Myunghoon KIM ,  Sanghyung KIM ,  Sanghoon KIM ,  Hyejin PARK ,  Seungryong OH

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/485 ,  H01M4/583 ,  H01M4/38 ,  H01M4/36 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/0404 ,  H01M4/625 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/485 ,  H01M4/583 ,  H01M4/386 ,  H01M4/364 ,  H01M10/0525 ,  H01M2004/027

Abstract: Provided is a lithium secondary battery including a positive electrode including a positive electrode current collector, and a positive active material layer on the positive electrode current collector; a negative electrode including a negative active material; and an electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an additive, the positive active material layer includes a positive active material and carbon nanotube, an average length of the carbon nanotube is greater than or equal to 1 μm and less than 200 μm, the carbon nanotube is included in an amount of greater than or equal to 0.5 wt % and less than 4 wt % based on the total weight of the positive active material layer, the additive includes a cyclic sulfone-based compound represented by Chemical Formula 1.
Details of Chemical Formula 1 are as described in the specification.

公开(公告)号：US20230125025A1

公开(公告)日：2023-04-20

申请号：US17905059

申请日：2021-02-17

Applicant: Samsung SDI Co., Ltd.

Inventor： Hyejin PARK ,  Sujeong KOH ,  Dahyun KIM ,  Myunghoon KIM ,  Sanghyung KIM ,  Sanghoon KIM ,  Seungryong OH

IPC: H01M10/0567 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/36 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134

Abstract: Provided is a lithium secondary battery including a positive electrode including a positive electrode current collector, and a positive active material layer on the positive electrode current collector; a negative electrode including a negative active material; and an electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an additive, the positive active material layer includes a positive active material and carbon nanotube, an average length of the carbon nanotube is greater than or equal to 1 μm and less than 200 μm, the carbon nanotube is included in an amount of greater than or equal to 0.5 wt % and less than 4 wt % based on the total weight of the positive active material layer, and the additive includes a phosphate-based compound represented by Chemical Formula 1.

公开(公告)号：US20230063361A1

公开(公告)日：2023-03-02

申请号：US17893044

申请日：2022-08-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Myunghoon KIM ,  Hyunbong CHOI ,  Sanghoon KIM ,  Yunhee KIM ,  Injun PARK ,  Hongryeol PARK ,  Seungryong OH ,  Myunghwan JEONG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36

Abstract: A rechargeable lithium battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; and an electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1, and the positive active material includes at least one lithium composite oxide represented by Chemical Formula 3.

公开(公告)号：US20230027225A1

公开(公告)日：2023-01-26

申请号：US17771623

申请日：2020-12-07

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Suyeol RYU ,  Sanghoon KIM ,  Soojin KIM ,  Wonseok CHO

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

Abstract: Provided are an additive represented by Chemical Formula 1, an electrolyte for a lithium secondary battery including same, and a lithium secondary battery. The details of Chemical Formula 1 are as described in the specification.

公开(公告)号：US20220173439A1

公开(公告)日：2022-06-02

申请号：US17538800

申请日：2021-11-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyunbong CHOI ,  Myunghoon KIM ,  Sanghoon KIM ,  Yunhee KIM ,  Injun PARK ,  Hongryeol PARK ,  Jeongmin SHIN ,  Seungryong OH ,  Myunghwan JEONG

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0565

Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2: wherein X is a fluoro group, a chloro group, a bromo group, or an iodo group, and A is a C1 to C10 alkylene group or (—C2H4—O—C2H4—)m, wherein m is an integer of 1 to 10.

公开(公告)号：US20220069350A1

公开(公告)日：2022-03-03

申请号：US17397033

申请日：2021-08-09

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Wonseok CHO ,  Dahyun KIM ,  Minseo KIM ,  Sanghyung KIM ,  Sanghoon KIM ,  Sangwoo PARK ,  Hyejin PARK ,  Myungheui WOO ,  Bokyung RYU ,  Tae Jin LEE ,  Olga TSAY ,  Pavel SHATUNOV

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/505 ,  H01M4/525

Abstract: An additive, an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery including the same, the additive being represented by Chemical Formula 1 or Chemical Formula 2:

公开(公告)号：US20190319308A1

公开(公告)日：2019-10-17

申请号：US16316737

申请日：2017-07-17

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Pavel Alexandrovich SHATUNOV ,  Sanghoon KIM ,  Woocheol SHIN ,  Harim LEE ,  Inhaeng CHO

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569

Abstract: Provided are an additive for an electrolyte for a lithium battery, an electrolyte for a lithium battery, the electrolyte including the additive, and a lithium battery using the electrolyte. The additive includes a compound represented by Formula 1: [P4O10]x.[B(OSiR1R2R3)3]y  Formula 1 wherein R1, R2, R3, and the molar ratio of x to y (x/y) are as defined in the specification. By adding the compound to the electrolyte, the lifetime characteristics of the lithium battery at high temperature may be improved.