公开(公告)号：US20210135284A1

公开(公告)日：2021-05-06

申请号：US16638642

申请日：2018-11-30

Applicant: LG Chem, Ltd.

Inventor： Jung Hoon Lee ,  Kyoung Ho Ahn ,  Jeong Woo Oh ,  Chul Haeng Lee

IPC: H01M10/0565 ,  H01M10/0525 ,  C08L25/08 ,  C08L33/24 ,  C08L33/08

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: a first oligomer represented by Formula 1; a second oligomer including a first repeating unit which is represented by Formula 2a and derived from a styrene monomer; a polymerization initiator; a lithium salt; and a non-aqueous solvent, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

公开(公告)号：US10998579B2

公开(公告)日：2021-05-04

申请号：US16339514

申请日：2018-03-16

Applicant: LG Chem, Ltd.

Inventor： Young Min Lim ,  Chul Haeng Lee ,  Jung Min Lee

IPC: H01M10/056 ,  H01M10/0567 ,  C07F5/02 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/052

Abstract: An electrolyte additive composition of the present invention may improve high-rate charge and discharge characteristics and high-temperature storage and life characteristics of a lithium secondary battery and may achieve an effect of increasing reversible capacity when the electrolyte additive composition is used in an electrolyte while including a novel borate-based lithium compound as well as a lithiated additive.

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：US10790541B2

公开(公告)日：2020-09-29

申请号：US16042074

申请日：2018-07-23

Applicant: LG Chem, Ltd.

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

IPC: H01M10/0565 ,  H01M10/052 ,  H01M4/485 ,  H01M4/525 ,  H01M10/44 ,  H01M4/505 ,  C08F299/02 ,  C08G18/67 ,  C08G18/76 ,  H01M10/0525 ,  C08K3/16 ,  C08K5/524 ,  C08G18/75 ,  C08K5/00 ,  C08K5/5419 ,  C08G18/50

Abstract: The present invention relates to a composition for a gel polymer electrolyte, in which liquid injection characteristics at room temperature and in an oxygen atmosphere are improved by including a non-fluoride oxygen scavenger as well as a polymerizable oligomer having a polymerizable substituent, and a lithium secondary battery in which capacity retention with cycles is excellent by including a gel polymer electrolyte which is formed by using the composition.

公开(公告)号：US10741878B2

公开(公告)日：2020-08-11

申请号：US16085354

申请日：2017-12-04

Applicant: LG Chem, Ltd.

Inventor： Yu Ra Jeong ,  Kyoung Ho Ahn ,  Jeong Woo Oh ,  Sol Ji Park ,  Chul Haeng Lee

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

Abstract: The present invention relates to a non-aqueous electrolyte for lithium secondary battery, and more particularly, to a non-aqueous electrolyte including a lithium salt having a concentration of 4.1 M or more, an organic solvent, and a surfactant.

公开(公告)号：US20200251776A1

公开(公告)日：2020-08-06

申请号：US16638612

申请日：2018-11-30

Applicant: LG Chem, Ltd.

Inventor： Jung Hoon Lee ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jeong Woo Oh

IPC: H01M10/0565 ,  H01M10/0525 ,  C08G69/02 ,  C08K5/524

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: an oligomer represented by Formula 1; an additive; a polymerization initiator; a lithium salt; and a non-aqueous solvent, the additive including at least one compound selected from the group consisting of a substituted or unsubstituted phosphate-based compound and a substituted or unsubstituted benzene-based compound, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

公开(公告)号：US20200220212A1

公开(公告)日：2020-07-09

申请号：US16638714

申请日：2018-11-28

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho Ahn ,  Jung Hoon Lee ,  Jae Won Lee ,  Chul Haeng Lee

IPC: H01M10/0565 ,  H01M10/052

Abstract: The present invention provides a composition for a gel polymer electrolyte, including an oligomer represented by Formula 1; a polymerization initiator; a non-aqueous solvent; and a lithium salt, and a gel polymer electrolyte and a lithium secondary battery including the same.

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.

公开(公告)号：US20200058960A1

公开(公告)日：2020-02-20

申请号：US16610637

申请日：2018-11-20

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Chul Haeng Lee ,  Yoo Sun Kang

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525 ,  C07F9/14 ,  C07F9/09

Abstract: An additive, a non-aqueous electrolyte for a lithium secondary battery including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an additive includes at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2. In some embodiments, a non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive including at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2.

公开(公告)号：US10553903B2

公开(公告)日：2020-02-04

申请号：US16078151

申请日：2017-12-08

Applicant: LG Chem, Ltd.

Inventor： Jeong Woo Oh ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jung Hoon Lee

IPC: H01M10/0565 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to an electrolyte for a lithium secondary battery, which includes a lithium salt, an organic solvent, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery in which overall performance is improved by suppressing reactivity with lithium metal by including the electrolyte.