公开(公告)号：US12051779B2

公开(公告)日：2024-07-30

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

CPC classification number: 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：US11721837B2

公开(公告)日：2023-08-08

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 ,  H01M4/02

CPC classification number: H01M10/0567 ,  C07F5/04 ,  C07F7/0834 ,  C07F9/65742 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/387 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2300/0025

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：US11626619B2

公开(公告)日：2023-04-11

申请号：US16642673

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 ,  C07F7/08 ,  C07F9/113 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; a first additive containing at least one compound among compounds represented 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：US11600862B2

公开(公告)日：2023-03-07

申请号：US16305092

申请日：2017-05-29

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yunhee Kim ,  Hoseok Yang ,  Minyoung Lee ,  Sejeong Park ,  Hyunwoo Kim ,  Sujeong Koh

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M4/131 ,  C08L65/02 ,  H01M4/02

Abstract: The present invention relates to an electrolyte for a lithium secondary battery, comprising an organic solvent, a lithium salt and a compound of Chemical Formula 1, wherein the compound of Chemical Formula 1 is contained in an amount of 0.001 wt % or more and less than 0.1 wt %. In Chemical Formula 1, n is one of the integers 3 to 10.

公开(公告)号：US20250038255A1

公开(公告)日：2025-01-30

申请号：US18013203

申请日：2021-12-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Soojin Kim ,  Jinah Seo ,  Junyong Lee ,  Hyejeong Jeong ,  Olga TSAY ,  Sunjoo Choi ,  Sanghoon Kim ,  Yunhee Kim

IPC: H01M10/0567 ,  H01M10/052

Abstract: Disclosed are an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including: a lithium salt; an organic solvent; and an additive, wherein the additive includes an isocyanate-based additive and a carbonate-based additive, wherein the ratio of the weight of the carbonate-based additive to the weight of the isocyanate-based additive is greater than 1.

公开(公告)号：US20240120539A1

公开(公告)日：2024-04-11

申请号：US18003863

申请日：2022-08-26

Applicant: Samsung SDI Co., Ltd.

Inventor： Junyong Lee ,  Sanghoon Kim ,  Soojin Kim ,  Yunhee Kim ,  Suyeol Ryu ,  Jinah Seo ,  Hyejeong Jeong ,  Wonseok Cho ,  Sunjoo Choi

IPC: H01M10/0567 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/0065

Abstract: Disclosed are an electrolyte for a lithium secondary battery, and a lithium secondary battery. The electrolyte for a lithium secondary battery includes a lithium salt; an organic solvent; and an additive, wherein the additive includes a compound represented by Formula 1.




In Formula 1, R1 to R5 are as defined in the detailed description of the disclosure.

公开(公告)号：US20240088439A1

公开(公告)日：2024-03-14

申请号：US18233773

申请日：2023-08-14

Applicant: Samsung SDI Co., Ltd.

Inventor： Jinhyeok Lim ,  Yunhee Kim ,  Wonseok Cho ,  Sujeong Koh ,  Jinah Seo ,  Erang Cho

IPC: H01M10/0567 ,  H01M4/1315 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/1315 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/052

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the electrolyte are disclosed. The electrolyte may include a lithium salt, an organic solvent, and a compound represented by Formula 1:




where, in Formula 1, A is oxygen or sulfur.

公开(公告)号：US11264644B2

公开(公告)日：2022-03-01

申请号：US16135342

申请日：2018-09-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Miyoung Son ,  Kyoungsoo Kim ,  Yunhee Kim ,  Jaehong Kim ,  Hana Ra ,  Suyeol Ryu ,  Myunghwan Jeong ,  Sunjoo Choi ,  Myungheui Woo ,  Seungtae Lee ,  Harim Lee ,  Siyoung Cha

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/42 ,  H01M10/0568 ,  C07D497/10 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/525

Abstract: A lithium battery includes a cathode including a cathode active material, an anode including an anode active material, and an organic electrolytic solution between the cathode and the anode. The organic electrolytic solution includes a first lithium salt, a second lithium salt different from the first lithium salt, an organic solvent, and a bicyclic sulfate-based compound represented by Formula 1 below: wherein, in Formula 1, each of A1, A2, A3, and A4 is independently a covalent bond, a substituted or unsubstituted C1-C5 alkylene group, a carbonyl group, or a sulfinyl group, wherein both A1 and A2 are not a covalent bond and both A3 and A4 are not a covalent bond.

公开(公告)号：US11114694B2

公开(公告)日：2021-09-07

申请号：US16135371

申请日：2018-09-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Miyoung Son ,  Kyoungsoo Kim ,  Yunhee Kim ,  Jaehong Kim ,  Hana Ra ,  Suyeol Ryu ,  Myunghwan Jeong ,  Sunjoo Choi ,  Myungheui Woo ,  Seungtae Lee ,  Harim Lee ,  Siyoung Cha

IPC: H01M10/0567 ,  H01M10/42 ,  H01M10/0525 ,  C07D497/10 ,  H01M10/052 ,  H01M4/525 ,  H01M10/0568 ,  H01M4/02 ,  H01M10/0569

Abstract: A lithium battery includes a cathode including a cathode active material, an anode including an anode active material, and an organic electrolytic solution between the cathode and the anode. The organic electrolytic solution includes a first lithium salt, an organic solvent, an oligomer compound, and a bicyclic sulfate-based compound represented by Formula 1 below: wherein, in Formula 1, each of A1, A2, A3, and A4 is independently a covalent bond, a substituted or unsubstituted C1-C5 alkylene group, a carbonyl group, or a sulfinyl group, in which both A1 and A2 are not a covalent bond and both A3 and A4 are not a covalent bond.

公开(公告)号：US20190020066A1

公开(公告)日：2019-01-17

申请号：US16135395

申请日：2018-09-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Miyoung Son ,  Kyoungsoo Kim ,  Yunhee Kim ,  Jaehong Kim ,  Hana Ra ,  Suyeol Ryu ,  Myunghwan Jeong ,  Sunjoo Choi ,  Myungheui Woo ,  Seungtae Lee ,  Harim Lee ,  Siyoung Cha

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/525 ,  C07D497/10

Abstract: A lithium battery includes a cathode including a cathode active material, an anode including an anode active material, and an organic electrolytic solution between the cathode and the anode, wherein the organic electrolytic solution includes a first lithium salt, a second lithium salt, an organic solvent, and a bicyclic sulfate-based compound represented by Formula 1 below: wherein, in Formula 1, each of A1, A2, A3, and A4 is independently a covalent bond, a substituted or unsubstituted C1-C5 alkylene group, a carbonyl group, or a sulfinyl group, in which both A1 and A2 are not a covalent bond and both A3 and A4 are not a covalent bond. The second lithium salt includes at least one selected from LiCF3SO3, Li(CF3SO2)2N, LiC4F9SO3, Li(FSO2)2N, and LiN(CxF2x+1SO2)(CyF2y+1SO2) where 2≤x≤20 and 2≤y≤20.