公开(公告)号：US20240186577A1

公开(公告)日：2024-06-06

申请号：US18481158

申请日：2023-10-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sangwoo Park ,  Wonseok Cho ,  Sanghyung Kim ,  Pavel SHATUNOV ,  Olga TSAY ,  Myungheui Woo ,  Hyejin Park ,  Sanghoon Kim ,  Bokyung Ryu

IPC: H01M10/0567 ,  C07F9/6578 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  C07F9/6578 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/004

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are provided. The electrolyte may include a lithium salt, an organic solvent, and an additives (e.g., sulfolane, cyclic phosphate, cyclic phosphite) that form a cathode electrolyte interface film to protect the surface of a positive electrode. Utilization of the additives may improve cycle-life characteristics and suppress or reduce increases to resistance during high-temperature storage of the lithium secondary battery.

公开(公告)号：US11830978B2

公开(公告)日：2023-11-28

申请号：US16887035

申请日：2020-05-29

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Myungheui Woo ,  Pavel Shatunov ,  Olga Tsay ,  Younghye Kang ,  Aeran Kim ,  Hyejin Park ,  Jeongmin Shin ,  Duckjae You ,  Taejin Lee ,  Harim Lee ,  Jinhyeok Lim ,  Wonseok Cho ,  Hyunbong Choi

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/36 ,  H01M4/583 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M10/0567 ,  H01M4/366 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0028 ,  H01M2300/0037 ,  H01M2300/0045

Abstract: An electrolyte additive for a lithium secondary battery, an electrolyte, and a lithium secondary battery, the additive including a compound represented by Formula 1 below:

公开(公告)号：US11508990B2

公开(公告)日：2022-11-22

申请号：US16597613

申请日：2019-10-09

Applicant: Samsung SDI Co., Ltd.

Inventor： Wonseok Cho ,  Pavel Shatunov ,  Olga Tsay ,  Younghye Kang ,  Aeran Kim ,  Hyejin Park ,  Jeongmin Shin ,  Myungheui Woo ,  Duckjae You ,  Taejin Lee ,  Harim Lee ,  Jinhyeok Lim ,  Hyunbong Choi

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/131

Abstract: A lithium secondary battery includes: a cathode, an anode; and an electrolyte between the cathode and the anode, wherein the cathode includes a cathode active material represented by Formula 1 below, and the electrolyte includes a lithium salt, a non-aqueous solvent, and a compound represented by Formula 2, where x, y, z, M, A, L1, a1, and R1 to R4 are defined as described in the disclosure.

公开(公告)号：US11031629B2

公开(公告)日：2021-06-08

申请号：US16373374

申请日：2019-04-02

Applicant: Samsung SDI Co., Ltd.

Inventor： Hyejin Park ,  Jungjin Moon ,  Myungheui Woo ,  Harim Lee ,  Jin-Hyeok Lim ,  Seonghun Jeong ,  Wonseok Cho ,  Hyunbong Choi

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  C07D275/02 ,  H01M10/0525

Abstract: Aspects of embodiments of the present disclosure provide an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery including the same. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and additive represented by Chemical Formula 1: In Chemical Formula 1, X1 is CH or a nitrogen atom (N), and Ra is a substituted or unsubstituted alkyl group. The additive may decompose under reducing voltages on the surface of the negative electrode to thereby form a polysulfonate-based passivation film to suppress or reduce gas generation and battery swelling.