公开(公告)号：US20220029200A1

公开(公告)日：2022-01-27

申请号：US17495864

申请日：2021-10-07

Applicant: SK Innovation Co., Ltd.

Inventor： Sung Yon Oh ,  In Haeng Cho ,  Dong Gun Lee ,  Jin Haek Yang

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0569 ,  H01M10/0568

Abstract: Provided is an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound, and a lithium secondary battery including the electrolyte.

公开(公告)号：US20200185774A1

公开(公告)日：2020-06-11

申请号：US16703917

申请日：2019-12-05

Applicant: SK Innovation Co., Ltd.

Inventor： In Haeng Cho ,  Hyo Shin Kwak ,  Joo Hyun Lee ,  Dai In Park

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  C07F9/146

Abstract: Provided are an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a difluorophosphite olefin compound, and a lithium secondary battery including the same.

公开(公告)号：US11811019B2

公开(公告)日：2023-11-07

申请号：US17003635

申请日：2020-08-26

Applicant: SK INNOVATION CO., LTD.

Inventor： Young Hoon Do ,  Yoon Ji Lee ,  Yong Hyun Cho ,  In Haeng Cho

IPC: H01M10/0525 ,  H01M50/46 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/36 ,  H01M4/02

CPC classification number: H01M10/0525 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M50/46 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0034 ,  H01M2300/0051

Abstract: Provided is a lithium secondary battery, and the lithium secondary battery of the present invention includes: a positive electrode including a first lithium-metal oxide including secondary particles formed by aggregating primary particles having a particle diameter of 2 μm or less and a second lithium-metal oxide including nickel and at least one or more metals selected from the group consisting of manganese (Mn) and cobalt (Co) and including particles having a primary particle diameter of 2 μm or more; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the electrolyte includes a lithium salt, a nonaqueous organic solvent, and a difluorophosphite compound containing at least one or more difluorophosphite groups.

公开(公告)号：US20220173436A1

公开(公告)日：2022-06-02

申请号：US17535016

申请日：2021-11-24

Applicant: SK Innovation Co., Ltd.

Inventor： Jin Hong Lee ,  Yu Na Shim ,  In Haeng Cho ,  Su Hee Han

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

Abstract: Provided is an electrolyte solution for a lithium secondary battery including an organic solvent, a lithium salt, an additive including at least one of isothiocyanate-based compounds represented by Chemical Formula 1 or Chemical Formula 2, and an auxiliary additive including at least one of a fluorine-containing carbonate-based compound, a lithium phosphate-based compound, a sultone-based compound, or a sulfate-based compound. A lithium secondary including the electrolyte solution is also provided.

公开(公告)号：US11335953B2

公开(公告)日：2022-05-17

申请号：US16703917

申请日：2019-12-05

Applicant: SK Innovation Co., Ltd.

Inventor： In Haeng Cho ,  Hyo Shin Kwak ,  Joo Hyun Lee ,  Dai In Park

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  C07F9/146 ,  H01M4/02

Abstract: Provided are an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a difluorophosphite olefin compound, and a lithium secondary battery including the same.

公开(公告)号：US11177507B2

公开(公告)日：2021-11-16

申请号：US16658222

申请日：2019-10-21

Applicant: SK Innovation Co., Ltd.

Inventor： Sung Yon Oh ,  In Haeng Cho ,  Dong Gun Lee ,  Jin Haek Yang

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569

Abstract: Provided is an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound represented by the following Chemical Formula 2: wherein R1 to R6 and R′ and R″ are independently of one another hydrogen or C1-C7 alkyl; L2 is —(CR7R8)n—; R7 and R8 are independently of each other hydrogen or C1-C7 alkyl; and n is an integer of 1 to 3. Also provided is a lithium secondary battery including the electrolyte.

公开(公告)号：US20210313621A1

公开(公告)日：2021-10-07

申请号：US17220088

申请日：2021-04-01

Applicant: SK Innovation Co., Ltd.

Inventor： Dai In Park ,  Myoung Lae Kim ,  Sung Jin Kim ,  Yu Na Shim ,  Joo Hyun Lee ,  In Haeng Cho

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  H01M10/0525 ,  C07F9/113

Abstract: A non-aqueous electrolyte solution according to an embodiment of the present invention includes a non-aqueous organic solvent, a lithium salt and a phosphonate-based additive having a predetermined chemical structure. Surface damage and side reactions of the cathode active material can be suppressed by the phosphonate-based additive. According to an embodiment of the present invention, a lithium secondary battery including the non-aqueous electrolyte solution is provided.

公开(公告)号：US11437647B2

公开(公告)日：2022-09-06

申请号：US16596813

申请日：2019-10-09

Applicant: SK Innovation Co., Ltd.

Inventor： In Haeng Cho ,  Hyo Shin Kwak ,  Dai In Park ,  Jin Haek Yang ,  Joo Hyun Lee ,  Myoung Lae Kim ,  Sung Yon Oh ,  Su Hee Han

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0569

Abstract: Provided are an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a bisfluorophosphite multicyclic compound, and a lithium secondary battery including the electrolyte.

公开(公告)号：US20220140393A1

公开(公告)日：2022-05-05

申请号：US17517151

申请日：2021-11-02

Applicant: SK Innovation Co., Ltd.

Inventor： In Haeng Cho ,  Myoung Lae Kim ,  Sung Jin Kim ,  Jin Hong Lee

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  C07F9/6574

Abstract: An electrolyte solution for a lithium secondary battery includes an organic solvent, a lithium salt, and a pentaerythritol diphosphite-based compound including at least one substituent selected from the group consisting of a silyl group, a sulfonyl group, a phosphoryl group and a phosphino group. A lithium secondary including the electrolyte solution is provided.

公开(公告)号：US20210313622A1

公开(公告)日：2021-10-07

申请号：US17220114

申请日：2021-04-01

Applicant: SK Innovation Co., Ltd.

Inventor： In Haeng Cho ,  Dong Gun Lee ,  Joo Hyun Lee ,  Sung Jin Kim

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0568 ,  C07C309/67 ,  C07F9/06

Abstract: An electrolyte for a lithium secondary battery according to exemplary embodiments of the present inventing includes an organic solvent, a lithium salt, a first additive represented by a predetermined chemical formula, and a second additive represented by a predetermined chemical formula. A protective film is formed by the additives to suppress an expansion of a lithium secondary battery and improve storage property at high temperature.