公开(公告)号：US20190089004A1

公开(公告)日：2019-03-21

申请号：US16085333

申请日：2018-01-18

Applicant: LG Chem, Ltd.

Inventor： Ha Eun Kim ,  Young Min Lim ,  Gwang Yeon Kim ,  Chul Haeng Lee

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

Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte solution for a lithium secondary battery which includes an ionizable lithium salt, an organic solvent, and an additive, wherein the additive includes tetravinylsilane, lithium difluorophosphate, and 1,3-propylene sulfate in a weight ratio of 1:3 to 20:3 to 20, and a total amount of the additive is in a range of 1 wt % to 4 wt % based on a total weight of the non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same.

公开(公告)号：US20180138547A1

公开(公告)日：2018-05-17

申请号：US15574665

申请日：2016-09-30

Applicant: LG Chem, Ltd.

Inventor： Gwang Yeon Kim ,  Young Min Lim ,  Chul Haeng Lee ,  Min Jung Kim ,  Ha Eun Kim

IPC: H01M10/0564 ,  C08K3/26 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M10/0564 ,  C08K3/26 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, lithium bis(fluorosulfonyl)imide (LiFSI), and a pyridine-based compound represented by Formula 1, and a lithium secondary battery including the same.The lithium secondary battery of the present invention including the non-aqueous electrolyte solution of the present invention may exhibit excellent low-temperature and room-temperature output characteristics, high-temperature and room-temperature cycle characteristics, and capacity characteristics after high-temperature storage.

公开(公告)号：US09614253B2

公开(公告)日：2017-04-04

申请号：US14418683

申请日：2014-10-31

Applicant: LG Chem, Ltd.

Inventor： Gwang Yeon Kim ,  Chul Haeng Lee ,  Doo Kyung Yang ,  Young Min Lim ,  Shul Kee Kim ,  Yu Ha An ,  Jin Hyun Park

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

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02E60/122

Abstract: Provided is a non-aqueous electrolyte solution including a non-aqueous organic solvent, an imide-based lithium salt, and at least one additive selected from the group consisting of lithium difluoro bis(oxalato)phosphate (LiDFOP), (trimethylsilyl)propyl phosphate (TMSPa), 1,3-propene sultone (PRS), and ethylene sulfate (ESa), as an electrolyte solution additive.According to the electrolyte solution additive for a lithium secondary battery of the present invention, the electrolyte solution additive may improve output characteristics at high and low temperatures and may prevent a swelling phenomenon by suppressing the decomposition of PF6− on the surface of a cathode, which may occur during a high-temperature cycle of a lithium secondary battery including the electrolyte solution additive, and preventing an oxidation reaction of an electrolyte solution.

公开(公告)号：US20160028115A1

公开(公告)日：2016-01-28

申请号：US14418683

申请日：2014-10-31

Applicant: LG Chem, Ltd.

Inventor： Gwang Yeon Kim ,  Chul Haeng Lee ,  Doo Kyung Yang ,  Young Min Lim ,  Shul Kee Kim ,  Yu Ha An ,  Jin Hyun Park

IPC: H01M10/0567 ,  H01M10/052 ,  H01M4/583 ,  H01M10/0569 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02E60/122

Abstract: Provided is a non-aqueous electrolyte solution including a non-aqueous organic solvent, an imide-based lithium salt, and at least one additive selected from the group consisting of lithium difluoro bis(oxalato)phosphate (LiDFOP), (trimethylsilyl)propyl phosphate (TMSPa), 1,3-propene sultone (PRS), and ethylene sulfate (ESa), as an electrolyte solution additive.According to the electrolyte solution additive for a lithium secondary battery of the present invention, the electrolyte solution additive may improve output characteristics at high and low temperatures and may prevent a swelling phenomenon by suppressing the decomposition of PF6− on the surface of a cathode, which may occur during a high-temperature cycle of a lithium secondary battery including the electrolyte solution additive, and preventing an oxidation reaction of an electrolyte solution.

Abstract translation: 本发明提供一种非水电解质溶液，其包含非水有机溶剂，酰亚胺系锂盐和至少一种选自二氟双（草酸）磷酸锂（LiDFOP），（三甲基甲硅烷基）丙基磷酸酯 （TMSPa），1,3-丙烯磺内酯（PRS）和硫酸亚乙酯（ESa）作为电解质溶液添加剂。 根据本发明的锂二次电池用电解液添加剂，电解液添加剂可以提高高低温下的输出特性，并且可以通过抑制阴极表面上的PF6-的分解来防止膨胀现象， 可能在包括电解质溶液添加剂的锂二次电池的高温循环期间发生，并且防止电解质溶液的氧化反应。

公开(公告)号：US11870036B2

公开(公告)日：2024-01-09

申请号：US16766976

申请日：2019-07-02

Applicant: LG Chem, Ltd.

Inventor： Gwang Yeon Kim ,  Chul Haeng Lee ,  Kyoung Ho Ahn ,  Jeong Woo Oh

IPC: H01M10/0567 ,  H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2004/028

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery includes an organic solvent, LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, an oligomer represented by Formula 1, as a first additive, and a mixed additive of lithium difluorophosphate (LiDFP), fluorobenzene (FB), and tetravinylsilane (TVS), as a second additive.

公开(公告)号：US11489203B2

公开(公告)日：2022-11-01

申请号：US16771561

申请日：2019-07-04

Applicant: LG Chem, Ltd.

Inventor： Won Kyung Shin ,  Kyoung Ho Ahn ,  Chui Haeng Lee ,  Min Jung Kim ,  Gwang Yeon Kim

IPC: H01M10/0568 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/02

Abstract: An electrolyte for a lithium secondary battery, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte includes a lithium salt having a concentration of 1.6 M to 5 M, an oligomer including a unit represented by Formula A, and an organic solvent including a cyclic carbonate-based compound and an acetate-based compound, wherein the cyclic carbonate-based compound is present in an amount of 6 vol % to 19 vol % based on the total volume of the organic solvent.

公开(公告)号：US10090560B2

公开(公告)日：2018-10-02

申请号：US15108981

申请日：2015-09-25

Applicant: LG Chem, Ltd.

Inventor： Shul Kee Kim ,  Chul Haeng Lee ,  Young Min Lim ,  Gwang Yeon Kim

IPC: H01M10/056 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568 ,  H01M4/136 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M10/0569 ,  H01M4/02

Abstract: The present invention relates to a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated ether compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode and a separator. According to a non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a rigid SEI layer may be formed at a negative electrode during the initial charging of the lithium secondary battery comprising the same, the output properties of the lithium secondary battery may be improved, and the output properties after storing at high temperature and capacity properties may be increased.

公开(公告)号：US20160329600A1

公开(公告)日：2016-11-10

申请号：US15107684

申请日：2015-09-25

Applicant: LG Chem, Ltd.

Inventor： Chul Haeng Lee ,  Shul Kee Kim ,  Gwang Yeon Kim ,  Doo Kyung Yang

IPC: H01M10/0567 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/62

CPC classification number: H01M10/0567 ,  H01M4/0435 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/0037

Abstract: The present invention provides a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated benzene-based compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode, and a separator.With the non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a solid SEI film is formed on a negative electrode when initially charging a lithium secondary battery comprising the non-aqueous liquid electrolyte, and an output property of the lithium secondary battery is improved, and an output property and stability after high temperature storage are capable of being enhanced as well.

Abstract translation: 对于本发明的锂二次电池用非水电解液，在最初对包含非水电解液的锂二次电池充电时，在负极上形成固体SEI膜，并且锂二次电池的输出特性 提高了电池，并且也能够提高高温保存后的输出特性和稳定性。

公开(公告)号：US20210036365A1

公开(公告)日：2021-02-04

申请号：US16766976

申请日：2019-07-02

Applicant: LG Chem, Ltd.

Inventor： Gwang Yeon Kim ,  Chul Haeng Lee ,  Kyoung Ho Ahn ,  Jeong Woo Oh

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/134 ,  H01M4/525 ,  H01M4/505

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery includes an organic solvent, LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, an oligomer represented by Formula 1, as a first additive, and a mixed additive of lithium difluorophosphate (LiDFP), fluorobenzene (FB), and tetravinylsilane (TVS), as a second additive.

公开(公告)号：US10700381B2

公开(公告)日：2020-06-30

申请号：US16085333

申请日：2018-01-18

Applicant: LG Chem, Ltd.

Inventor： Ha Eun Kim ,  Young Min Lim ,  Gwang Yeon Kim ,  Chul Haeng Lee

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

Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte solution for a lithium secondary battery which includes an ionizable lithium salt, an organic solvent, and an additive, wherein the additive includes tetravinylsilane, lithium difluorophosphate, and 1,3-propylene sulfate in a weight ratio of 1:3 to 20:3 to 20, and a total amount of the additive is in a range of 1 wt % to 4 wt % based on a total weight of the non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same.