公开(公告)号：US20200235427A1

公开(公告)日：2020-07-23

申请号：US16305163

申请日：2018-05-30

Applicant: LG CHEM, LTD.

Inventor： Daeil KIM ,  Jonghyun CHAE ,  Yeonju LEE

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/131 ,  H01M4/60 ,  H01M4/62 ,  H01M4/137

Abstract: The present invention relates to a polymer electrolyte of a multi-layer structure and an all solid-state battery comprising the same, wherein the polymer electrolyte can exhibit an effect capable of stably operating in the high voltage positive electrode and in the low voltage negative electrode, when using the polymer solid electrolyte having a multi-layer structure, which includes the first polymer electrolyte layer and the second polymer electrolyte layer of the present invention, and the all solid-state battery containing it is applicable in the battery field of electric vehicle in which high capacity and high-power battery are used.

公开(公告)号：US20200212484A1

公开(公告)日：2020-07-02

申请号：US16646982

申请日：2018-07-20

Applicant: LG CHEM, LTD.

Inventor： Sujee KWON ,  Jeongae YOON ,  Sung Soo YOON ,  Kyung Oh KIM ,  Jonghyun CHAE ,  Yeonju LEE ,  Daeil KIM ,  Lucia KIM ,  Jongheon KWAK

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0563

Abstract: A solid electrolyte composition for a lithium secondary battery including a fluorine-based polymer having grafted thereon a unit comprising alkylene oxide group and a crosslinkable functional group. The polymer may be formed by a process including grafting a monomer on a fluorine-based polymer, where the monomer includes alkylene oxide group and a crosslinkable functional group. Also disclosed is a solid electrolyte for a secondary battery formed by thermally curing the composition. By graft copolymerizing a monomer including alkylene oxide group and a crosslinkable functional group on a fluorine-based polymer having high lithium ion conductivity, the solid electrolyte is capable of providing a solid electrolyte for a secondary battery having significantly enhanced solid electrolyte ion conductivity and electrochemical stability.

公开(公告)号：US20190386340A1

公开(公告)日：2019-12-19

申请号：US16487725

申请日：2018-09-21

Applicant: LG CHEM, LTD. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Daeil KIM ,  Moon Jeong PARK ,  Jonghyun CHAE ,  Yeonju LEE ,  Lucia KIM ,  Ha Young JUNG ,  Gyuha JO

IPC: H01M10/0565 ,  H01M10/052 ,  C08G65/333 ,  C08G65/335

Abstract: A polymer electrolyte including a poly(ethylene oxide) (PEO) containing polymer; and a lithium salt, wherein a terminal of the poly (ethylene oxide) containing polymer is substituted with a sulfur compound functional group, a nitrogen compound functional group or a phosphorus compound functional group, and a method for preparing the same and a battery containing the same.

公开(公告)号：US20210091410A1

公开(公告)日：2021-03-25

申请号：US16954836

申请日：2019-07-24

Applicant: LG CHEM, LTD. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Daeil KIM ,  Moon Jeong PARK ,  Jonghyun CHAE ,  Ha Young JUNG ,  Suhwan KIM ,  Sung Chul LIM ,  Jihoon AHN

IPC: H01M10/0565 ,  H01M10/0525 ,  C08G65/335 ,  C08G65/333

Abstract: A polymer electrolyte is provided, which includes a polymer including an ethylene oxide unit; and a lithium salt, wherein the terminal of the polymer is substituted with one to four functional groups selected from the group consisting of a nitrogen compound functional group and phosphorus compound functional group, and the terminal of the polymer and the one to four functional groups are linked by one selected from the group consisting of a C2 to C20 alkylene linker, a C2 to C20 ether linker, and a C2 to C20 amine linker. A method for preparing the same is also provided.

公开(公告)号：US20190280332A1

公开(公告)日：2019-09-12

申请号：US16330795

申请日：2018-04-13

Applicant: LG CHEM, LTD.

Inventor： Seungha KIM ,  Youngcheol CHOI ,  Jonghyun CHAE ,  Kyoung Hoon KIM ,  Yeonju LEE ,  Daeil KIM ,  Lucia KIM

IPC: H01M10/0565 ,  H01M10/052 ,  H01M10/42 ,  C07C309/65 ,  C07C309/63 ,  C07D333/36 ,  C07D333/48

Abstract: A polymer solid electrolyte having high ion conductivity and interfacial stability. By the polymer solid electrolyte comprising an additive having excellent reachability to a positive electrode surface, and properties of facilitating film formation in a positive electrode due to low oxidation potential, a film is readily formed on the positive electrode surface, and as a result, a lithium secondary battery having enhanced performance may be provided.

公开(公告)号：US20210066751A1

公开(公告)日：2021-03-04

申请号：US16958426

申请日：2019-01-11

Applicant: LG CHEM, LTD.

Inventor： Daeil KIM ,  Jonghyun CHAE

IPC: H01M10/0565 ,  H01M10/0525 ,  C08F290/14

Abstract: A solid polymer electrolyte and a method of manufacturing the same are provided. More particularly, a solid polymer electrolyte having a high content of solids and exhibiting a flame retardant property and a method of manufacturing the same, wherein the solid polymer electrolyte includes a multifunctional acrylate-based polymer, a C2 to C10 polyalkylene oxide, a lithium salt and a non-aqueous solvent and wherein the multifunctional acrylate-based polymer is cross-linked with the polyalkylene oxide to form a semi-interpenetrating polymer network (semi-IPN).

公开(公告)号：US20200172732A1

公开(公告)日：2020-06-04

申请号：US16500031

申请日：2018-10-30

Applicant: LG CHEM, LTD

Inventor： Hyun Woog RYU ,  Joong Jin HAN ,  Eunju PARK ,  Kwonsu JUNG ,  Hansol KIM ,  Jong Hyun CHAE ,  Daeil KIM

IPC: C08L81/02 ,  C08L25/18 ,  C08K5/375 ,  C08J5/18

Abstract: The present invention provides a polyarylene sulfide resin composition comprising a mixture of polyarylene sulfide and a binder resin having excellent electrical conductivity and high temperature stability.

公开(公告)号：US20210028439A1

公开(公告)日：2021-01-28

申请号：US17042805

申请日：2019-08-22

Applicant: LG CHEM, LTD.

Inventor： Daeil KIM ,  Jonghyun CHAE ,  Suhwan KIM ,  Sung Chul LIM ,  Jihoon AHN

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

Abstract: A solid polymer electrolyte and a method for preparing the solid polymer electrolyte are disclosed. More particularly, a solid polymer electrolyte including a multifunctional acrylate-based polymer, a C1 to C10 polyalkylene oxide, a flame-retardant polymer, a lithium salt, and a non-aqueous solvent, wherein the multifunctional acrylate-based polymer is cross-linked with the polyalkylene oxide to form semi-interpenetrating polymer networks (semi-IPN), and the flame-retardant polymer is present blended with the semi-interpenetrating polymer networks of the multifunctional acrylate-based polymer and the polyalkylene oxide, which shows high solid content and flame-retardant characteristics, and a method for preparing the same.

公开(公告)号：US20200350586A1

公开(公告)日：2020-11-05

申请号：US16643367

申请日：2018-07-12

Applicant: LG CHEM, LTD. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Jonghyun CHAE ,  Jong-Chan LEE ,  Yeonju LEE ,  Daeil KIM ,  Lucia KIM ,  Jehoon LEE ,  Na Kyung KIM ,  Daun JEONG

IPC: H01M4/60 ,  H01M10/0525

Abstract: A polymer material for a lithium secondary battery having ionic conductivity and electronic conductivity at the same time, and a method for preparing the same. The polymer material includes a polythiophene-based polymer and a conductive polymer, and the polymer material may be formed by forming a polythiophene-based polymer, forming a conductive polymer, and heat-treating the polythiophene-based polymer and the conductive polymer.

公开(公告)号：US20190067739A1

公开(公告)日：2019-02-28

申请号：US16301815

申请日：2018-02-27

Applicant: LG CHEM, LTD.

Inventor： Yeonju LEE ,  Jonghyun CHAE ,  Daeil KIM

IPC: H01M10/0565 ,  H01M10/0525 ,  C08F220/70 ,  C08F220/22 ,  H01M4/525 ,  H01B1/12

Abstract: A solid polymer electrolyte having high mechanical strength and ion conductivity, and a lithium secondary battery including the same.