公开(公告)号：US20210359299A1

公开(公告)日：2021-11-18

申请号：US16968191

申请日：2019-07-25

Applicant: LG CHEM, LTD.

Inventor： Kihyun KIM ,  Kyung Oh KIM ,  Yeyoung HA

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/36 ,  H01M4/62 ,  H01M10/052

Abstract: A lithium electrode and a lithium secondary battery the same are disclosed. More specifically, a lithium electrode is disclosed that can increase the lifetime of the battery by providing a protective layer containing a copolymer containing an acetal functional group forming a stable SEI layer through a chemical reaction with lithium metal and a fluorine-based functional group capable of forming a LiF-rich SEI layer on the surface of the lithium metal to inhibit the formation of lithium dendrite and inhibit the side reaction of lithium metal and electrolyte solution.

公开(公告)号：US20210242502A1

公开(公告)日：2021-08-05

申请号：US17053821

申请日：2019-11-18

Applicant: LG CHEM, LTD.

Inventor： Yeyoung HA ,  Jaegil LEE

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/054 ,  H01M4/38

Abstract: Discussed is an electrolyte solution for a lithium-sulfur battery including a lithium salt, an organic solvent and an additive, and a lithium-sulfur battery including the same, wherein the additive includes a heterocyclic compound containing at least one double bond, and a heterocycle of the heterocyclic compound comprises an oxygen atom or a sulfur atom.

公开(公告)号：US20210226252A1

公开(公告)日：2021-07-22

申请号：US16768982

申请日：2019-05-10

Applicant: LG CHEM, LTD.

Inventor： Yeyoung HA ,  Kihyun KIM ,  Doo Kyung YANG

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/052 ,  H01M50/417 ,  H01M10/0568 ,  H01M4/38 ,  H01M4/02

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same, and more specifically, an electrolyte for a lithium secondary battery that can uniformly maintain a lithium ion concentration on the surface of a lithium metal negative electrode to inhibit the growth of lithium dendrites, even if a small amount of an additive comprising a functional group forming a bond with lithium metal and a polyethylene oxide chain interacting with lithium ion is contained.