公开(公告)号：US10930975B2

公开(公告)日：2021-02-23

申请号：US16082484

申请日：2017-02-14

申请人： LG CHEM, LTD.

发明人： Intae Park ,  Sungwon Hong ,  Charles Kiseok Song ,  Youhwa Ohk ,  Doo Kyung Yang ,  Changhoon Lee

IPC分类号： H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/38

摘要： 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：US12021224B2

公开(公告)日：2024-06-25

申请号：US17265346

申请日：2019-11-18

申请人： LG CHEM, LTD.

发明人： Changhoon Lee ,  Doo Kyung Yang ,  Intae Park

IPC分类号： H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/056 ,  H01M4/02

CPC分类号： H01M4/362 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/056 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0037

摘要： 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：US11545720B2

公开(公告)日：2023-01-03

申请号：US16624750

申请日：2018-05-04

申请人： LG CHEM, LTD.

发明人： Kihyun Kim ,  Soohyun Kim ,  Doo Kyung Yang ,  Sun Mi Jin ,  Changhoon Lee

IPC分类号： H01M50/446 ,  H01M50/403 ,  H01M50/46 ,  H01M10/052 ,  H01M10/058

摘要： A lithium-sulfur battery comprising a separator in which an adsorption layer including a radical compound having a nitroxyl radical site is formed, and in particular, to a lithium-sulfur battery suppressing elution of lithium polysulfide by using an adsorption layer including a radical compound having a nitroxyl radical site and optionally a conductive material on at least one surface of a separator. In the lithium-sulfur battery, elution and diffusion may be prevented by a radical compound having a nitroxyl radical site, a stable radical compound, adsorbing lithium polysulfide eluted from positive electrode, and in addition thereto, electrical conductivity is further provided to provide a reaction site of a positive electrode active material, and as a result, battery capacity and lifetime properties are enhanced.

公开(公告)号：US10923759B2

公开(公告)日：2021-02-16

申请号：US16082400

申请日：2017-03-10

申请人： LG CHEM, LTD.

发明人： Intae Park ,  Sungwon Hong ,  Charles Kiseok Song ,  Youhwa Ohk ,  Doo Kyung Yang ,  Changhoon Lee

IPC分类号： H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/38

摘要： 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.