公开(公告)号：US20210104732A1

公开(公告)日：2021-04-08

申请号：US16971180

申请日：2019-07-16

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Doo Kyung YANG ,  Jeehyun AHN

IPC: H01M4/1395 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/44 ,  H01M4/38 ,  H01M4/04

Abstract: A method for pre-treating lithium metal for a lithium secondary battery including stripping a surface oxide film formed on a surface of the lithium metal by discharging the battery, and a plating lithium metal on the surface of the lithium metal, from which the surface oxide film has been stripped, by charging the battery.

公开(公告)号：US20210408526A1

公开(公告)日：2021-12-30

申请号：US17285417

申请日：2020-05-28

Applicant: LG CHEM, LTD.

Inventor： Myeongjun SONG ,  Myeongseong KIM ,  Minsu KIM ,  Intae PARK

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/451 ,  H01M50/431 ,  H01M50/417

Abstract: Disclosed is a lithium secondary battery, and in particular, to a lithium secondary battery capable of obtaining higher energy density and longer lifetime compared to existing lithium secondary batteries by specifying conditions of a positive electrode and an electrolyte liquid and additionally surface modifying a carbon material through heat treatment or including a separator including a molybdenum disulfide coating layer.

公开(公告)号：US20190088980A1

公开(公告)日：2019-03-21

申请号：US16082400

申请日：2017-03-10

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Sungwon HONG ,  Charles Kiseok SONG ,  Youhwa OHK ,  Doo Kyung YANG ,  Changhoon LEE

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

Abstract: The present invention relates to a ternary liquid electrolyte for a lithium-sulfur battery and a lithium-sulfur battery including the same.The liquid electrolyte for a lithium-sulfur battery according to the present invention exhibits an excellent sulfur utilization rate when used in a lithium-sulfur battery, and exhibits excellent stability. Accordingly, the liquid electrolyte for a lithium-sulfur battery according to the present invention is capable of enhancing a life time property while securing a capacity property of a lithium-sulfur battery.

公开(公告)号：US20190198913A1

公开(公告)日：2019-06-27

申请号：US16328998

申请日：2017-09-15

Applicant: LG CHEM, LTD.

Inventor： Dongwook KOH ,  Doo Kyung YANG ,  Intae PARK

IPC: H01M10/052 ,  H01M10/058 ,  H01M4/62

CPC classification number: H01M10/052 ,  H01M2/16 ,  H01M4/626 ,  H01M10/058 ,  H01M10/42 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A lithium-sulfur battery in which a passivation film having a semi-interpenetrating polymer network (semi-IPN) structure is formed on an electrode to improve lifespan characteristics of high-loading lithium-sulfur batteries.

公开(公告)号：US20170301962A1

公开(公告)日：2017-10-19

申请号：US15509644

申请日：2015-09-10

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Changhun PARK ,  Seongeun PARK ,  Yoonsoo JUNG

IPC: H01M10/42 ,  H01M4/38 ,  H01M4/134 ,  H01M10/0569

CPC classification number: H01M10/4235 ,  H01M4/13 ,  H01M4/134 ,  H01M4/38 ,  H01M4/382 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0569 ,  H01M2220/20 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present specification relates to a lithium-sulfur battery including an anode, a cathode, and an electrolyte provided between the anode and the cathode, and a battery module including the same.

公开(公告)号：US20170104209A1

公开(公告)日：2017-04-13

申请号：US15315818

申请日：2015-06-15

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk SON ,  Minchul JANG ,  Kiyoung KWON ,  Seong Ho LEE ,  Intae PARK ,  Changhun PARK ,  Junghun CHOI

IPC: H01M4/133 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M4/133 ,  H01M4/382 ,  H01M4/485 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present application relates to a lithium electrode and a lithium secondary battery including the same.

公开(公告)号：US20210328209A1

公开(公告)日：2021-10-21

申请号：US17265346

申请日：2019-11-18

Applicant: LG CHEM, LTD.

Inventor： Changhoon LEE ,  Doo Kyung YANG ,  Intae PARK

IPC: H01M4/36 ,  H01M10/056 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M10/0525

Abstract: A lithium-sulfur secondary battery is disclosed, and in particular, a lithium-sulfur secondary battery in which a positive electrode includes a sulfur-carbon composite including a microporous carbon material and sulfur, or a conductive additive including a carbon material having high specific surface area. By specifying conditions of the positive electrode and an electrolyte liquid, energy density may be enhanced compared to existing lithium-sulfur secondary batteries.

公开(公告)号：US20210184274A1

公开(公告)日：2021-06-17

申请号：US16636538

申请日：2018-08-10

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Doo Kyung YANG

IPC: H01M10/44 ,  H02J7/00

Abstract: A method for improving a lifetime property and a charging rate of a lithium-sulfur secondary battery capable of both improving a lifetime property and a charging rate of the secondary battery by inducing a homogeneous reaction of the lithium-sulfur secondary battery by applying a charging rate differently for each section in a charging process of the lithium-sulfur secondary battery.

公开(公告)号：US20210104745A1

公开(公告)日：2021-04-08

申请号：US16971177

申请日：2019-10-24

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Doo Kyung YANG ,  Youngcheol CHOI ,  Soohyun KIM ,  Changhoon LEE

IPC: H01M4/58 ,  H01M4/136 ,  H01M10/0569 ,  H01M10/052

Abstract: A lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte solution are provided. The positive electrode has an SC factor value of 0.45 or more. The electrolyte solution includes a solvent and a lithium salt, and the solvent includes a first solvent having a DV2 factor value of 1.7 or less, and a second solvent which is a fluorinated ether-based solvent.

公开(公告)号：US20190097270A1

公开(公告)日：2019-03-28

申请号：US16082484

申请日：2017-02-14

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Sungwon HONG ,  Charles Kiseok SONG ,  Youhwa OHK ,  Doo Kyung YANG ,  Changhoon LEE

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

Abstract: The present invention relates to a ternary liquid electrolyte for a lithium-sulfur battery and a lithium-sulfur battery including the same.The liquid electrolyte for a lithium-sulfur battery according to the present invention exhibits an excellent sulfur utilization rate when used in a lithium-sulfur battery, and exhibits excellent stability. Accordingly, the liquid electrolyte for a lithium-sulfur battery according to the present invention is capable of enhancing a life time property while securing a capacity property of a lithium-sulfur battery.