公开(公告)号：US11121404B2

公开(公告)日：2021-09-14

申请号：US14413755

申请日：2014-10-28

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Kyung Mi Lee ,  Yoo Sun Kang ,  Jung Hoon Lee ,  Doo Kyung Yang

IPC: H01M10/0565 ,  H01M10/052 ,  H01M4/66 ,  H01M50/571 ,  H01M10/0567

Abstract: The present disclosure relates to a gel polymer electrolyte including an imide salt, and a lithium secondary battery including the same and having a protective film formed on a cathode tab. Disclosed are a gel polymer electrolyte that allows the production of a secondary battery having excellent quality with no corrosion of a cathode, while using, as an electrolyte, an imide-based salt effective for improvement of output quality and high-temperature storability, as well as a secondary battery including the same.

公开(公告)号：US10541445B2

公开(公告)日：2020-01-21

申请号：US15332273

申请日：2016-10-24

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Yoo Sun Kang ,  Kyung Mi Lee

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

Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution including a compound represented by Formula 1 below, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution. NC—(R)n—CN  [Formula 1] (in Formula 1, R is a cycloalkylene group having 3 to 6 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, a haloalkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, or an alkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted, and n is an integer of 1 to 5.)

公开(公告)号：US10297860B2

公开(公告)日：2019-05-21

申请号：US14247679

申请日：2014-04-08

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Yoo Sun Kang ,  Kyung Mi Lee ,  Jin Hyun Park ,  Jung Don Suk ,  Doo Kyung Yang

IPC: H01M10/0565 ,  H01M10/052 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/058

Abstract: Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein i) the anode includes a silicon (Si)-based anode active material, ii) the gel polymer electrolyte is formed by polymerizing a composition that includes a monomer having a functional group bondable to metal ions, and iii) a charge voltage of the battery is in a range of 3.0 V to 5.0 V.Since the lithium secondary battery of the present invention may prevent the movement of metal ions dissolved from a cathode to an anode or reduce the precipitation of metal on the anode, the lifetime of the battery may not only be improved but capacity characteristics of the battery may also be excellent even in the case in which the battery is charged at a high voltage as well as normal voltage.

公开(公告)号：US20180191031A1

公开(公告)日：2018-07-05

申请号：US15735741

申请日：2016-10-26

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Yoo Sun Kang ,  Kyung Mi Lee

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

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0569 ,  H01M2300/0037

Abstract: The present invention relates to: a non-aqueous electrolyte additive comprising, as a substituent, at least one cyano group and/or at least one fluorine element; a non-aqueous electrolyte for a lithium secondary battery, comprising the same; and a lithium secondary battery including the non-aqueous electrolyte.

公开(公告)号：US20180191024A1

公开(公告)日：2018-07-05

申请号：US15740920

申请日：2017-03-30

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu

IPC: H01M10/058 ,  H01M10/052 ,  H01M10/0569 ,  H01M10/04 ,  H01M2/16 ,  H01M4/64 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M10/058 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/1666 ,  H01M2/1673 ,  H01M2/1686 ,  H01M4/0404 ,  H01M4/505 ,  H01M4/525 ,  H01M4/64 ,  H01M10/0459 ,  H01M10/052 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2004/028

Abstract: The present invention relates to a method of preparing a secondary battery which includes providing a film layer, which includes a first solvent having a melting temperature of 25° C. or more and a viscosity of 1.5 cP or more, between a separator and an electrode (step 1), preparing an electrode assembly by using the electrode, the film layer, and the separator (step 2), and accommodating the electrode assembly in a case, injecting an injection solution including a second solvent, and sealing the case (step 3), and a secondary battery prepared by the method. According to the method of preparing a secondary battery of the preset invention, since electrolyte solution impregnability may be improved, performance and safety of the secondary battery may be further improved.

公开(公告)号：US11139506B2

公开(公告)日：2021-10-05

申请号：US16328308

申请日：2018-02-01

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Yoo Sun Kang

IPC: H01M10/0567 ,  H01M10/0568 ,  C07F9/6574 ,  H01M10/0569 ,  H01M10/0525 ,  H01M10/44 ,  H01M4/48 ,  H01M4/587 ,  H01M4/36

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 a fluorine-containing compound capable of forming a stable film on the surface of an electrode as an additive, and a lithium secondary battery including the same.

公开(公告)号：US10601069B2

公开(公告)日：2020-03-24

申请号：US15737503

申请日：2017-03-21

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Kyung Mi Lee

IPC: H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  C07D213/84 ,  C07D213/85 ,  C07C255/25 ,  C07C255/19 ,  C07C255/09 ,  C07D241/24 ,  C07C255/54 ,  C07C255/15 ,  C07C255/13 ,  C07C255/24 ,  C07C255/07 ,  C07C255/51 ,  H01M2/16 ,  H01M4/131 ,  H01M4/66 ,  H01M10/0585 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/02

Abstract: The present invention relates to a non-aqueous electrolyte additive, and a non-aqueous electrolyte for a lithium secondary battery including the same and a lithium secondary battery, and particularly, to a non-aqueous electrolyte additive having a nitrile group and a propargyl group, and a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery, which include the non-aqueous electrolyte additive so that capacity and cycle lifespan characteristics at high temperature can be improved.

公开(公告)号：US20200044287A1

公开(公告)日：2020-02-06

申请号：US16340269

申请日：2018-07-06

Applicant: LG Chem, Ltd.

Inventor： Hyun Seung Kim ,  Sung Hoon Yu

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0568 ,  H01M10/0569 ,  C07C229/30 ,  C07D211/60 ,  C07D241/04 ,  C07D295/145 ,  C07D207/16 ,  C07D233/90

Abstract: The present invention relates to a non-aqueous electrolyte solution additive, and a non-aqueous electrolyte solution for a lithium-ion battery and a lithium-ion battery which include the same, and particularly, to a non-aqueous electrolyte solution, which may remove an acid generated by the decomposition of a lithium salt while being able to suppress the dissolution of metal impurities causing failure in the battery by using and including a Lewis base compound containing a propargyl group as a non-aqueous electrolyte solution additive for a lithium-ion battery, and a lithium secondary battery in which transition metal dissolution in a positive electrode and a low-voltage phenomenon are improved.

公开(公告)号：US20190334207A1

公开(公告)日：2019-10-31

申请号：US16086451

申请日：2018-01-15

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Kyung Mi Lee ,  Shul Kee Kim ,  Hyun Yeong Lee ,  Yoo Sun Kang

IPC: H01M10/0567 ,  C07C43/315 ,  C07C57/18 ,  C07D303/22 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution, which may suppress the generation of metallic foreign matter causing a side effect in a battery while forming a stable film on the surface of an electrode, a non-aqueous electrolyte solution for a lithium secondary battery which includes the additive, and a lithium secondary battery including the non-aqueous electrolyte solution.

公开(公告)号：US10211483B2

公开(公告)日：2019-02-19

申请号：US15341193

申请日：2016-11-02

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Hyun Yeong Lee ,  Yoo Sun Kang ,  Kyung Mi Lee

IPC: H01M10/05 ,  H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution, which has an excellent effect of adsorbing metal ions dissolved from a positive electrode, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution.