公开(公告)号：US20210336274A1

公开(公告)日：2021-10-28

申请号：US16625602

申请日：2018-08-28

Applicant: LG CHEM, LTD.

Inventor： Bora JUNG ,  Eunkyung PARK ,  Minchul JANG ,  Byoungkuk SON ,  Changhun PARK ,  Doyeon KIM

IPC: H01M4/80 ,  H01M10/052 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/48 ,  H01M4/58 ,  H01M10/0562 ,  H01M4/62 ,  H01M4/38

Abstract: A lithium secondary battery including a negative electrode in which a negative electrode mixture included in the negative electrode is formed by charge and discharge of the battery. This negative electrode is formed by charge-induced formation of lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery forms lithium metal while being blocked from the atmosphere. Therefore, formation of a surface oxide layer (native oxide layer) on a negative electrode is blocked and a lithium dendrite growth suppressing effect is achieved by forming lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery has a superior battery efficiency and reduces declines in lifetime properties.

公开(公告)号：US20210028484A1

公开(公告)日：2021-01-28

申请号：US17040500

申请日：2019-10-31

Applicant: LG CHEM, LTD.

Inventor： Eunkyung PARK ,  Minchul JANG ,  Suk Il YOUN ,  Byoungkuk SON ,  Changhun PARK ,  Doyeon KIM ,  Bora JUNG ,  Yeilin HAM

IPC: H01M10/052 ,  H01M4/38 ,  H01M4/525 ,  H01M4/505 ,  C01G51/00 ,  C01G53/00

Abstract: A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte disposed between the positive electrode and the negative electrode; and a lithium metal layer on the negative electrode current collector in the negative electrode. The electrolyte includes a first electrolyte layer and a second electrolyte disposed on the first electrolyte layer, wherein the first electrolyte layer faces the negative electrode, and the second electrolyte layer faces the positive electrode. The first electrolyte layer has higher ion conductivity than the second electrolyte layer, and wherein the lithium metal layer is formed by migration of lithium ions from the positive electrode after charging.

公开(公告)号：US20190226109A1

公开(公告)日：2019-07-25

申请号：US16337804

申请日：2018-04-04

Applicant: LG CHEM, LTD.

Inventor： Changhun PARK ,  Minchul JANG ,  Da Young SUNG ,  Se Ho PARK ,  Doyeon KIM ,  Donghyeon KANG

IPC: C25D3/42 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/66 ,  H01M4/70

Abstract: An electroplating solution for lithium metal, and a method for preparing a lithium metal electrode using the same, and in particular, while preparing a lithium metal electrode using electroplating, a lithium metal electrode having enhanced surface properties may be prepared by electroplating using a plating solution including a lithium nitrogen oxide and a metal nitrogen oxide, and, by using such a lithium metal electrode in a battery, lifetime properties of the battery may be enhanced.