公开(公告)号：US20170117551A1

公开(公告)日：2017-04-27

申请号：US15318301

申请日：2015-06-15

Applicant: LG CHEM, LTD.

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

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/40 ,  H01M4/587 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/133

CPC classification number: H01M4/628 ,  H01M4/133 ,  H01M4/134 ,  H01M4/382 ,  H01M4/405 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

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

公开(公告)号：US20210399294A1

公开(公告)日：2021-12-23

申请号：US17292793

申请日：2020-01-16

Applicant: LG CHEM, LTD.

Inventor： Eunkyung CHO ,  Intae PARK ,  Myeongjun SONG ,  Ilto KIM ,  Hyunah CHO

IPC: H01M4/38 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/62

Abstract: A lithium secondary battery, specifically, a lithium secondary battery. By specifically adjusting the porosity (%) and the mass of sulfur per unit area (mg/cm2) of a positive electrode active material layer including a sulfur-carbon composite, the initial battery discharge capacity is improved, and thus a high energy density can be achieved.

公开(公告)号：US20200235364A1

公开(公告)日：2020-07-23

申请号：US16304950

申请日：2017-07-06

Applicant: LG CHEM, LTD.

Inventor： Taek Gyoung KIM ,  Doo Kyung YANG ,  Intae PARK

IPC: H01M2/16 ,  H01M10/052 ,  H01M10/42

Abstract: A lithium-sulfur battery is provided. More specifically, a lithium-sulfur battery including a polymer non-woven fabric containing a liquid electrolyte between a positive electrode including sulfur and a separator is provided. By including a polymer non-woven fabric containing a liquid electrolyte between a positive electrode and a separator, the lithium-sulfur battery according to the present invention is capable of continuously supplying the liquid electrolyte to the positive electrode, and suppressing polysulfide elution. Accordingly, the lithium-sulfur battery has a reduced discharge overvoltage, and exhibits excellent discharge capacity and life time properties.

公开(公告)号：US20200227792A1

公开(公告)日：2020-07-16

申请号：US16628963

申请日：2018-07-04

Applicant: LG CHEM, LTD.

Inventor： Intae PARK ,  Doo Kyung YANG

IPC: H01M10/44 ,  H01M10/052 ,  H01M10/0569 ,  H01M4/58 ,  H01M4/136

Abstract: A method for producing a lithium-sulfur battery with an improved lifetime. This method includes an activation step of forming a positive electrode active material-derived compound from a compound including elemental sulfur by charging and discharging the lithium-sulfur battery, where the battery includes the compound including elemental sulfur and an electrolyte liquid. Additionally, the positive electrode active material-derived compound has a solubility of 1% by weight or greater in the electrolyte liquid. The lithium-sulfur battery may be charged and discharged in a range of greater than 2.0 V and less than 2.4 V in the activation step. Further, the lithium-sulfur battery may be charged and discharged 3 times to 10 times in the activation step. This method avoids a complicated application process of and active material in preparing a lithium-sulfur battery.

公开(公告)号：US20180301739A1

公开(公告)日：2018-10-18

申请号：US15767289

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 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/0563

Abstract: The present invention relates to a 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 excellent stability, and may improve a swelling phenomenon by suppressing gas generation during lithium-sulfur battery operation.