公开(公告)号：US20180315991A1

公开(公告)日：2018-11-01

申请号：US15771285

申请日：2017-07-13

Applicant: LG CHEM, LTD.

Inventor： Eun Bee KIM ,  Ji Young KIM ,  Hye Yeong SIM ,  Jung Pil LEE ,  Hye Ri JUNG

IPC: H01M4/04

CPC classification number: H01M4/0404 ,  H01M4/0402 ,  H01M4/13 ,  H01M4/139 ,  H01M10/052

Abstract: The present invention relates to an electrode and a method for manufacturing the electrode, which are for maintaining the uniformity of the thickness of an electrode coating layer in the electrode.In addition, the present invention is characterized by including a preparation step for preparing an electrode foil, an attachment step for attaching an adhesive member onto a portion of the electrode foil, a coated part formation step for coating an active material onto the electrode foil, and an uncoated part formation step for forming an uncoated part on the electrode foil by removing the adhesive member along with the active material coated onto the adhesive member.

公开(公告)号：US20180205069A1

公开(公告)日：2018-07-19

申请号：US15743798

申请日：2017-03-30

Applicant: LG CHEM, LTD.

Inventor： Jung Pil LEE ,  Eun Bee KIM ,  Jong Hwa LEE ,  Hye Ri JUNG ,  Sung Ju CHO

IPC: H01M4/04 ,  H01M10/0525 ,  H01M10/058 ,  H01M2/36

Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an actual electrolyte solution impregnation time for an electrode active material, setting an estimated impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the estimated impregnation time in a production process.

公开(公告)号：US20180309162A1

公开(公告)日：2018-10-25

申请号：US15771323

申请日：2017-07-04

Applicant: LG CHEM, LTD.

Inventor： Hye Ri JUNG ,  Jung Pil LEE

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/66 ,  H01M4/1391 ,  H01M4/1393 ,  H01M10/058

CPC classification number: H01M10/0525 ,  H01M4/02 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/587 ,  H01M4/623 ,  H01M4/661 ,  H01M10/058 ,  H01M2004/027 ,  H01M2004/028

Abstract: Provided are a negative electrode including a current collector, a first active material layer including first active material particles and disposed on the current collector, and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein the first pattern includes first pattern active material particles, the second pattern includes second pattern active material particles, a thickness of the first pattern is greater than a thickness of the second pattern, and a volume expansion rate of the second pattern is greater than a volume expansion rate of the first pattern, and a secondary battery including the negative electrode.

公开(公告)号：US20180316013A1

公开(公告)日：2018-11-01

申请号：US15771276

申请日：2017-07-14

Applicant: LG CHEM, LTD.

Inventor： Jung Pil LEE ,  Hee Won LEE

IPC: H01M4/583 ,  H01M10/052 ,  H01M10/44 ,  H01M4/505 ,  H01M4/66 ,  H01M10/0569 ,  H01M4/62 ,  H01M2/16

CPC classification number: H01M4/13 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/621 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/027

Abstract: The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a current collector; a first active material layer disposed on the current collector and including at least one concave portion exposing a portion of the current collector; a stress-relaxing portion disposed in the concave portion; and a second active material layer disposed on the first active material layer and the stress-relaxing portion and separated from the current collector, and a secondary battery including the same.

公开(公告)号：US20180205090A1

公开(公告)日：2018-07-19

申请号：US15743749

申请日：2017-03-30

Applicant: LG CHEM, LTD.

Inventor： Jung Pil LEE ,  Sang Kyun LEE

IPC: H01M4/74 ,  H01M10/058 ,  H01M10/48 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/74 ,  H01M4/13 ,  H01M4/662 ,  H01M4/742 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/48 ,  H01M2004/021

Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an electrolyte solution impregnation time for an electrode active material, setting an optimum estimated electrolyte solution impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the optimum estimated electrolyte solution impregnation time in a production process.

公开(公告)号：US20180233738A1

公开(公告)日：2018-08-16

申请号：US15751343

申请日：2017-07-04

Applicant: LG Chem, Ltd.

Inventor： Hye Ri JUNG ,  Jung Pil LEE

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M4/366 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present invention relates to a positive electrode and a secondary battery including the same, and particularly, to a positive electrode which includes a current collector; a first active material layer including first active material particles and disposed on the current collector; and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein the first pattern includes first pattern active material particles, the second pattern includes second pattern active material particles, the first pattern has a thickness greater than that of the second pattern, and the second pattern has a volume expansion rate greater than that of the first pattern, and a secondary battery including the same.