公开(公告)号：US20210057735A1

公开(公告)日：2021-02-25

申请号：US17044052

申请日：2019-07-29

Applicant: LG CHEM, LTD.

Inventor： Bong Soo KIM ,  Soohyun KIM ,  Sun Mi JIN

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/587 ,  H01M4/38 ,  C07C311/09

Abstract: A sulfur-carbon composite, a preparation method thereof, a positive electrode, and a lithium secondary battery including the same are disclosed. The sulfur-carbon composite has a fluorine-based surfactant and sulfur sequentially forming a double coating layer on the surface of a porous carbon material and/or on an inner surface of pores of the porous carbon material, and thus when the sulfur-carbon composite is applied to a positive electrode of a lithium secondary battery, for example, a lithium-sulfur secondary battery, the fluorine-based surfactant can be slowly dissolved to prevent deterioration of lithium contained in the negative electrode, and the surface energy of the electrolyte solution can be lowered to improve the wettability of the positive electrode, thereby improving the lifetime of the battery.

公开(公告)号：US20180351194A1

公开(公告)日：2018-12-06

申请号：US15779275

申请日：2016-12-19

Applicant: LG CHEM, LTD.

Inventor： Kun Seok LEE ,  Jungyeon LEE ,  Seung Heon LEE ,  Sun Mi JIN ,  Hyejin KWON

IPC: H01M10/04 ,  H01M2/16

Abstract: The present application relates to a separator and a battery comprising the same. A separator according to an exemplary embodiment of the present application includes: a porous substrate; and a first bonding layer pattern provided on at least one surface of the porous substrate, in which each pattern constituting the first bonding layer pattern is a pattern including a second bonding layer pattern having an aperture ratio of 5% or more and 40% or less.

公开(公告)号：US20210143510A1

公开(公告)日：2021-05-13

申请号：US16624750

申请日：2018-05-04

Applicant: LG CHEM, LTD.

Inventor： Kihyun KIM ,  Soohyun KIM ,  Doo Kyung YANG ,  Sun Mi JIN ,  Changhoon LEE

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

Abstract: 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：US20180026242A1

公开(公告)日：2018-01-25

申请号：US15551100

申请日：2016-04-22

Applicant: LG Chem, Ltd.

Inventor： Joo Sung LEE ,  Sun Mi JIN

IPC: H01M2/10 ,  H01M4/66

CPC classification number: H01M2/1072 ,  B60L3/0007 ,  B60L3/0046 ,  B60L50/64 ,  B60Y2306/01 ,  H01M4/661 ,  H01M4/667 ,  H01M10/052 ,  H01M10/4235 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7005 ,  Y02T10/705

Abstract: The present invention relates to a secondary battery pack and a vehicle comprising the same. Specifically, the present invention provides a secondary battery pack comprising at least one battery cell and at least one structure covering at least a part of the battery cell and electrically insulated from the battery cell, wherein at least a part of the structure comprising a material having resistivity of 3 times or less based on resistivity of at least one material comprised in a positive electrode collector of the battery cell.