公开(公告)号：US20200287219A1

公开(公告)日：2020-09-10

申请号：US16644683

申请日：2018-12-19

Applicant: LG CHEM, LTD.

Inventor： Hyunsoo LEE ,  Jong Mo JUNG ,  Doo Kyung YANG ,  Yu Mi KIM ,  Seong Ho LEE ,  Gi Su PARK ,  Byounghyo JUNG

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/587 ,  H01M4/36 ,  H01M4/133 ,  H01M4/136 ,  H01M10/052

Abstract: A binder for a lithium-sulfur battery, and a positive electrode and a lithium-sulfur battery including the same, and in particular, to a binder for a lithium-sulfur battery including lithium polyacrylate and polyvinyl alcohol. By including two types of specific polymers, the binder for a lithium-sulfur battery is capable of enhancing electrochemical properties and stability of a positive electrode, and thereby enhancing capacity and lifetime properties of a lithium-sulfur battery.

公开(公告)号：US20200274134A1

公开(公告)日：2020-08-27

申请号：US16646523

申请日：2018-11-06

Applicant: LG CHEM, LTD.

Inventor： Gi Su PARK ,  Seong Ho LEE ,  Byounghyo JUNG ,  Hyunsoo LEE ,  Doo Kyung YANG

IPC: H01M2/36 ,  H01M10/052 ,  H01M10/44 ,  H01M10/058 ,  H01M10/0569

Abstract: A method for enhancing a lifetime of a lithium secondary battery including manufacturing a battery by injecting an electrolyte liquid to an electrode assembly-embedded battery; and charging and discharging the manufactured battery; and additionally injecting an electrolyte liquid earlier than half a cycle point with respect to the number of charge and discharge cycles reaching discharge capacity of 80% compared to initial capacity is provided.